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	-%s or -o option
	-irsD or -c command or -O shopt_option		(invocation only)

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  (wd: %s) (core dumped) line $%s: cannot assign in this way%c%c: invalid option%d: invalid file descriptor: %s%s can be invoked via %s has null exportstr%s is %s
%s is a function
%s is a shell builtin
%s is a shell keyword
%s is aliased to `%s'
%s is hashed (%s)
%s is not bound to any keys.
%s out of range%s%s%s: %s (error token is "%s")%s: %s out of range%s: %s: bad interpreter%s: %s: cannot open as FILE%s: %s: invalid value for trace file descriptor%s: %s: must use subscript when assigning associative array%s: %s:%d: cannot allocate %lu bytes%s: %s:%d: cannot allocate %lu bytes (%lu bytes allocated)%s: ambiguous job spec%s: ambiguous redirect%s: arguments must be process or job IDs%s: bad network path specification%s: bad substitution%s: binary operator expected%s: cannot allocate %lu bytes%s: cannot allocate %lu bytes (%lu bytes allocated)%s: cannot assign fd to variable%s: cannot assign list to array member%s: cannot assign to non-numeric index%s: cannot convert associative to indexed array%s: cannot convert indexed to associative array%s: cannot create: %s%s: cannot delete: %s%s: cannot destroy array variables in this way%s: cannot execute binary file%s: cannot execute: %s%s: cannot get limit: %s%s: cannot modify limit: %s%s: cannot open temp file: %s%s: cannot open: %s%s: cannot overwrite existing file%s: cannot read: %s%s: cannot unset%s: cannot unset: readonly %s%s: command not found%s: error retrieving current directory: %s: %s
%s: expression error
%s: file is too large%s: file not found%s: first non-whitespace character is not `"'%s: hash table empty
%s: history expansion failed%s: host unknown%s: illegal option -- %c
%s: inlib failed%s: integer expression expected%s: invalid action name%s: invalid array origin%s: invalid associative array key%s: invalid callback quantum%s: invalid file descriptor specification%s: invalid limit argument%s: invalid line count%s: invalid option%s: invalid option name%s: invalid service%s: invalid shell option name%s: invalid signal specification%s: invalid timeout specification%s: is a directory%s: job %d already in background%s: job has terminated%s: line %d: %s: missing colon separator%s: no completion specification%s: no job control%s: no such job%s: not a function%s: not a regular file%s: not a shell builtin%s: not an array variable%s: not an indexed array%s: not dynamically loaded%s: not found%s: numeric argument required%s: option requires an argument%s: option requires an argument -- %c
%s: parameter null or not set%s: readonly function%s: readonly variable%s: restricted%s: restricted: cannot redirect output%s: restricted: cannot specify `/' in command names%s: substring expression < 0%s: unary operator expected%s: unbound variable%s: usage: (( expression ))(core dumped) (wd now: %s)
. filename [arguments]/dev/(tcp|udp)/host/port not supported without networking/tmp must be a valid directory name:<no current directory>ABORT instructionAborting...Add directories to stack.
    
    Adds a directory to the top of the directory stack, or rotates
    the stack, making the new top of the stack the current working
    directory.  With no arguments, exchanges the top two directories.
    
    Options:
      -n	Suppresses the normal change of directory when adding
    	directories to the stack, so only the stack is manipulated.
    
    Arguments:
      +N	Rotates the stack so that the Nth directory (counting
    	from the left of the list shown by `dirs', starting with
    	zero) is at the top.
    
      -N	Rotates the stack so that the Nth directory (counting
    	from the right of the list shown by `dirs', starting with
    	zero) is at the top.
    
      dir	Adds DIR to the directory stack at the top, making it the
    	new current working directory.
    
    The `dirs' builtin displays the directory stack.
    
    Exit Status:
    Returns success unless an invalid argument is supplied or the directory
    change fails.Adds a directory to the top of the directory stack, or rotates
    the stack, making the new top of the stack the current working
    directory.  With no arguments, exchanges the top two directories.
    
    Options:
      -n	Suppresses the normal change of directory when adding
    	directories to the stack, so only the stack is manipulated.
    
    Arguments:
      +N	Rotates the stack so that the Nth directory (counting
    	from the left of the list shown by `dirs', starting with
    	zero) is at the top.
    
      -N	Rotates the stack so that the Nth directory (counting
    	from the right of the list shown by `dirs', starting with
    	zero) is at the top.
    
      dir	Adds DIR to the directory stack at the top, making it the
    	new current working directory.
    
    The `dirs' builtin displays the directory stack.Alarm (profile)Alarm (virtual)Alarm clockArithmetic for loop.
    
    Equivalent to
    	(( EXP1 ))
    	while (( EXP2 )); do
    		COMMANDS
    		(( EXP3 ))
    	done
    EXP1, EXP2, and EXP3 are arithmetic expressions.  If any expression is
    omitted, it behaves as if it evaluates to 1.
    
    Exit Status:
    Returns the status of the last command executed.BPT trace/trapBad system callBogus signalBroken pipeBus errorCPU limitChild death or stopCommon shell variable names and usage.
    
    BASH_VERSION	Version information for this Bash.
    CDPATH	A colon-separated list of directories to search
    		for directories given as arguments to `cd'.
    GLOBIGNORE	A colon-separated list of patterns describing filenames to
    		be ignored by pathname expansion.
    HISTFILE	The name of the file where your command history is stored.
    HISTFILESIZE	The maximum number of lines this file can contain.
    HISTSIZE	The maximum number of history lines that a running
    		shell can access.
    HOME	The complete pathname to your login directory.
    HOSTNAME	The name of the current host.
    HOSTTYPE	The type of CPU this version of Bash is running under.
    IGNOREEOF	Controls the action of the shell on receipt of an EOF
    		character as the sole input.  If set, then the value
    		of it is the number of EOF characters that can be seen
    		in a row on an empty line before the shell will exit
    		(default 10).  When unset, EOF signifies the end of input.
    MACHTYPE	A string describing the current system Bash is running on.
    MAILCHECK	How often, in seconds, Bash checks for new mail.
    MAILPATH	A colon-separated list of filenames which Bash checks
    		for new mail.
    OSTYPE	The version of Unix this version of Bash is running on.
    PATH	A colon-separated list of directories to search when
    		looking for commands.
    PROMPT_COMMAND	A command to be executed before the printing of each
    		primary prompt.
    PS1		The primary prompt string.
    PS2		The secondary prompt string.
    PWD		The full pathname of the current directory.
    SHELLOPTS	A colon-separated list of enabled shell options.
    TERM	The name of the current terminal type.
    TIMEFORMAT	The output format for timing statistics displayed by the
    		`time' reserved word.
    auto_resume	Non-null means a command word appearing on a line by
    		itself is first looked for in the list of currently
    		stopped jobs.  If found there, that job is foregrounded.
    		A value of `exact' means that the command word must
    		exactly match a command in the list of stopped jobs.  A
    		value of `substring' means that the command word must
    		match a substring of the job.  Any other value means that
    		the command must be a prefix of a stopped job.
    histchars	Characters controlling history expansion and quick
    		substitution.  The first character is the history
    		substitution character, usually `!'.  The second is
    		the `quick substitution' character, usually `^'.  The
    		third is the `history comment' character, usually `#'.
    HISTIGNORE	A colon-separated list of patterns used to decide which
    		commands should be saved on the history list.
ContinueCopyright (C) 2009 Free Software Foundation, Inc.
Create a coprocess named NAME.
    
    Execute COMMAND asynchronously, with the standard output and standard
    input of the command connected via a pipe to file descriptors assigned
    to indices 0 and 1 of an array variable NAME in the executing shell.
    The default NAME is "COPROC".
    
    Exit Status:
    Returns the exit status of COMMAND.Define local variables.
    
    Create a local variable called NAME, and give it VALUE.  OPTION can
    be any option accepted by `declare'.
    
    Local variables can only be used within a function; they are visible
    only to the function where they are defined and its children.
    
    Exit Status:
    Returns success unless an invalid option is supplied, an error occurs,
    or the shell is not executing a function.Define or display aliases.
    
    Without arguments, `alias' prints the list of aliases in the reusable
    form `alias NAME=VALUE' on standard output.
    
    Otherwise, an alias is defined for each NAME whose VALUE is given.
    A trailing space in VALUE causes the next word to be checked for
    alias substitution when the alias is expanded.
    
    Options:
      -p	Print all defined aliases in a reusable format
    
    Exit Status:
    alias returns true unless a NAME is supplied for which no alias has been
    defined.Define shell function.
    
    Create a shell function named NAME.  When invoked as a simple command,
    NAME runs COMMANDs in the calling shell's context.  When NAME is invoked,
    the arguments are passed to the function as $1...$n, and the function's
    name is in $FUNCNAME.
    
    Exit Status:
    Returns success unless NAME is readonly.Display directory stack.
    
    Display the list of currently remembered directories.  Directories
    find their way onto the list with the `pushd' command; you can get
    back up through the list with the `popd' command.
    
    Options:
      -c	clear the directory stack by deleting all of the elements
      -l	do not print tilde-prefixed versions of directories relative
    	to your home directory
      -p	print the directory stack with one entry per line
      -v	print the directory stack with one entry per line prefixed
    	with its position in the stack
    
    Arguments:
      +N	Displays the Nth entry counting from the left of the list shown by
    	dirs when invoked without options, starting with zero.
    
      -N	Displays the Nth entry counting from the right of the list shown by
    	dirs when invoked without options, starting with zero.
    
    Exit Status:
    Returns success unless an invalid option is supplied or an error occurs.Display information about builtin commands.
    
    Displays brief summaries of builtin commands.  If PATTERN is
    specified, gives detailed help on all commands matching PATTERN,
    otherwise the list of help topics is printed.
    
    Options:
      -d	output short description for each topic
      -m	display usage in pseudo-manpage format
      -s	output only a short usage synopsis for each topic matching
    	PATTERN
    
    Arguments:
      PATTERN	Pattern specifiying a help topic
    
    Exit Status:
    Returns success unless PATTERN is not found or an invalid option is given.Display information about command type.
    
    For each NAME, indicate how it would be interpreted if used as a
    command name.
    
    Options:
      -a	display all locations containing an executable named NAME;
    	includes aliases, builtins, and functions, if and only if
    	the `-p' option is not also used
      -f	suppress shell function lookup
      -P	force a PATH search for each NAME, even if it is an alias,
    	builtin, or function, and returns the name of the disk file
    	that would be executed
      -p	returns either the name of the disk file that would be executed,
    	or nothing if `type -t NAME' would not return `file'.
      -t	output a single word which is one of `alias', `keyword',
    	`function', `builtin', `file' or `', if NAME is an alias, shell
    	reserved word, shell function, shell builtin, disk file, or not
    	found, respectively
    
    Arguments:
      NAME	Command name to be interpreted.
    
    Exit Status:
    Returns success if all of the NAMEs are found; fails if any are not found.Display or execute commands from the history list.
    
    fc is used to list or edit and re-execute commands from the history list.
    FIRST and LAST can be numbers specifying the range, or FIRST can be a
    string, which means the most recent command beginning with that
    string.
    
    Options:
      -e ENAME	select which editor to use.  Default is FCEDIT, then EDITOR,
    		then vi
      -l 	list lines instead of editing
      -n	omit line numbers when listing
      -r	reverse the order of the lines (newest listed first)
    
    With the `fc -s [pat=rep ...] [command]' format, COMMAND is
    re-executed after the substitution OLD=NEW is performed.
    
    A useful alias to use with this is r='fc -s', so that typing `r cc'
    runs the last command beginning with `cc' and typing `r' re-executes
    the last command.
    
    Exit Status:
    Returns success or status of executed command; non-zero if an error occurs.Display or manipulate the history list.
    
    Display the history list with line numbers, prefixing each modified
    entry with a `*'.  An argument of N lists only the last N entries.
    
    Options:
      -c	clear the history list by deleting all of the entries
      -d offset	delete the history entry at offset OFFSET.
    
      -a	append history lines from this session to the history file
      -n	read all history lines not already read from the history file
      -r	read the history file and append the contents to the history
    	list
      -w	write the current history to the history file
    	and append them to the history list
    
      -p	perform history expansion on each ARG and display the result
    	without storing it in the history list
      -s	append the ARGs to the history list as a single entry
    
    If FILENAME is given, it is used as the history file.  Otherwise,
    if $HISTFILE has a value, that is used, else ~/.bash_history.
    
    If the $HISTTIMEFORMAT variable is set and not null, its value is used
    as a format string for strftime(3) to print the time stamp associated
    with each displayed history entry.  No time stamps are printed otherwise.
    
    Exit Status:
    Returns success unless an invalid option is given or an error occurs.Display or set file mode mask.
    
    Sets the user file-creation mask to MODE.  If MODE is omitted, prints
    the current value of the mask.
    
    If MODE begins with a digit, it is interpreted as an octal number;
    otherwise it is a symbolic mode string like that accepted by chmod(1).
    
    Options:
      -p	if MODE is omitted, output in a form that may be reused as input
      -S	makes the output symbolic; otherwise an octal number is output
    
    Exit Status:
    Returns success unless MODE is invalid or an invalid option is given.Display possible completions depending on the options.
    
    Intended to be used from within a shell function generating possible
    completions.  If the optional WORD argument is supplied, matches against
    WORD are generated.
    
    Exit Status:
    Returns success unless an invalid option is supplied or an error occurs.Display process times.
    
    Prints the accumulated user and system times for the shell and all of its
    child processes.
    
    Exit Status:
    Always succeeds.Display status of jobs.
    
    Lists the active jobs.  JOBSPEC restricts output to that job.
    Without options, the status of all active jobs is displayed.
    
    Options:
      -l	lists process IDs in addition to the normal information
      -n	list only processes that have changed status since the last
    	notification
      -p	lists process IDs only
      -r	restrict output to running jobs
      -s	restrict output to stopped jobs
    
    If -x is supplied, COMMAND is run after all job specifications that
    appear in ARGS have been replaced with the process ID of that job's
    process group leader.
    
    Exit Status:
    Returns success unless an invalid option is given or an error occurs.
    If -x is used, returns the exit status of COMMAND.Display the list of currently remembered directories.  Directories
    find their way onto the list with the `pushd' command; you can get
    back up through the list with the `popd' command.
    
    Options:
      -c	clear the directory stack by deleting all of the elements
      -l	do not print tilde-prefixed versions of directories relative
    	to your home directory
      -p	print the directory stack with one entry per line
      -v	print the directory stack with one entry per line prefixed
    	with its position in the stack
    
    Arguments:
      +N	Displays the Nth entry counting from the left of the list shown by
    	dirs when invoked without options, starting with zero.
    
      -N	Displays the Nth entry counting from the right of the list shown by
	dirs when invoked without options, starting with zero.DoneDone(%d)EMT instructionEnable and disable shell builtins.
    
    Enables and disables builtin shell commands.  Disabling allows you to
    execute a disk command which has the same name as a shell builtin
    without using a full pathname.
    
    Options:
      -a	print a list of builtins showing whether or not each is enabled
      -n	disable each NAME or display a list of disabled builtins
      -p	print the list of builtins in a reusable format
      -s	print only the names of Posix `special' builtins
    
    Options controlling dynamic loading:
      -f	Load builtin NAME from shared object FILENAME
      -d	Remove a builtin loaded with -f
    
    Without options, each NAME is enabled.
    
    To use the `test' found in $PATH instead of the shell builtin
    version, type `enable -n test'.
    
    Exit Status:
    Returns success unless NAME is not a shell builtin or an error occurs.Evaluate arithmetic expression.
    
    The EXPRESSION is evaluated according to the rules for arithmetic
    evaluation.  Equivalent to "let EXPRESSION".
    
    Exit Status:
    Returns 1 if EXPRESSION evaluates to 0; returns 0 otherwise.Evaluate conditional expression.
    
    This is a synonym for the "test" builtin, but the last argument must
    be a literal `]', to match the opening `['.Execute a simple command or display information about commands.
    
    Runs COMMAND with ARGS suppressing  shell function lookup, or display
    information about the specified COMMANDs.  Can be used to invoke commands
    on disk when a function with the same name exists.
    
    Options:
      -p	use a default value for PATH that is guaranteed to find all of
    	the standard utilities
      -v	print a description of COMMAND similar to the `type' builtin
      -V	print a more verbose description of each COMMAND
    
    Exit Status:
    Returns exit status of COMMAND, or failure if COMMAND is not found.Execute arguments as a shell command.
    
    Combine ARGs into a single string, use the result as input to the shell,
    and execute the resulting commands.
    
    Exit Status:
    Returns exit status of command or success if command is null.Execute commands as long as a test does not succeed.
    
    Expand and execute COMMANDS as long as the final command in the
    `until' COMMANDS has an exit status which is not zero.
    
    Exit Status:
    Returns the status of the last command executed.Execute commands as long as a test succeeds.
    
    Expand and execute COMMANDS as long as the final command in the
    `while' COMMANDS has an exit status of zero.
    
    Exit Status:
    Returns the status of the last command executed.Execute commands based on conditional.
    
    The `if COMMANDS' list is executed.  If its exit status is zero, then the
    `then COMMANDS' list is executed.  Otherwise, each `elif COMMANDS' list is
    executed in turn, and if its exit status is zero, the corresponding
    `then COMMANDS' list is executed and the if command completes.  Otherwise,
    the `else COMMANDS' list is executed, if present.  The exit status of the
    entire construct is the exit status of the last command executed, or zero
    if no condition tested true.
    
    Exit Status:
    Returns the status of the last command executed.Execute commands based on pattern matching.
    
    Selectively execute COMMANDS based upon WORD matching PATTERN.  The
    `|' is used to separate multiple patterns.
    
    Exit Status:
    Returns the status of the last command executed.Execute commands for each member in a list.
    
    The `for' loop executes a sequence of commands for each member in a
    list of items.  If `in WORDS ...;' is not present, then `in "$@"' is
    assumed.  For each element in WORDS, NAME is set to that element, and
    the COMMANDS are executed.
    
    Exit Status:
    Returns the status of the last command executed.Execute commands from a file in the current shell.
    
    Read and execute commands from FILENAME in the current shell.  The
    entries in $PATH are used to find the directory containing FILENAME.
    If any ARGUMENTS are supplied, they become the positional parameters
    when FILENAME is executed.
    
    Exit Status:
    Returns the status of the last command executed in FILENAME; fails if
    FILENAME cannot be read.Execute conditional command.
    
    Returns a status of 0 or 1 depending on the evaluation of the conditional
    expression EXPRESSION.  Expressions are composed of the same primaries used
    by the `test' builtin, and may be combined using the following operators:
    
      ( EXPRESSION )	Returns the value of EXPRESSION
      ! EXPRESSION		True if EXPRESSION is false; else false
      EXPR1 && EXPR2	True if both EXPR1 and EXPR2 are true; else false
      EXPR1 || EXPR2	True if either EXPR1 or EXPR2 is true; else false
    
    When the `==' and `!=' operators are used, the string to the right of
    the operator is used as a pattern and pattern matching is performed.
    When the `=~' operator is used, the string to the right of the operator
    is matched as a regular expression.
    
    The && and || operators do not evaluate EXPR2 if EXPR1 is sufficient to
    determine the expression's value.
    
    Exit Status:
    0 or 1 depending on value of EXPRESSION.Execute shell builtins.
    
    Execute SHELL-BUILTIN with arguments ARGs without performing command
    lookup.  This is useful when you wish to reimplement a shell builtin
    as a shell function, but need to execute the builtin within the function.
    
    Exit Status:
    Returns the exit status of SHELL-BUILTIN, or false if SHELL-BUILTIN is
    not a shell builtin..Exit %dExit a login shell.
    
    Exits a login shell with exit status N.  Returns an error if not executed
    in a login shell.Exit for, while, or until loops.
    
    Exit a FOR, WHILE or UNTIL loop.  If N is specified, break N enclosing
    loops.
    
    Exit Status:
    The exit status is 0 unless N is not greater than or equal to 1.Exit the shell.
    
    Exits the shell with a status of N.  If N is omitted, the exit status
    is that of the last command executed.File limitFloating point exceptionGNU bash, version %s (%s)
GNU bash, version %s-(%s)
GNU long options:
Group commands as a unit.
    
    Run a set of commands in a group.  This is one way to redirect an
    entire set of commands.
    
    Exit Status:
    Returns the status of the last command executed.HFT input data pendingHFT monitor mode grantedHFT monitor mode retractedHFT sound sequence has completedHOME not setHangupI have no name!I/O readyIllegal instructionInformation requestInterruptKilledLicense GPLv2+: GNU GPL version 2 or later <http://gnu.org/licenses/gpl.html>
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
Mark shell variables as unchangeable.
    
    Mark each NAME as read-only; the values of these NAMEs may not be
    changed by subsequent assignment.  If VALUE is supplied, assign VALUE
    before marking as read-only.
    
    Options:
      -a	refer to indexed array variables
      -A	refer to associative array variables
      -f	refer to shell functions
      -p	display a list of all readonly variables and functions
    
    An argument of `--' disables further option processing.
    
    Exit Status:
    Returns success unless an invalid option is given or NAME is invalid.Modify shell resource limits.
    
    Provides control over the resources available to the shell and processes
    it creates, on systems that allow such control.
    
    Options:
      -S	use the `soft' resource limit
      -H	use the `hard' resource limit
      -a	all current limits are reported
      -b	the socket buffer size
      -c	the maximum size of core files created
      -d	the maximum size of a process's data segment
      -e	the maximum scheduling priority (`nice')
      -f	the maximum size of files written by the shell and its children
      -i	the maximum number of pending signals
      -l	the maximum size a process may lock into memory
      -m	the maximum resident set size
      -n	the maximum number of open file descriptors
      -p	the pipe buffer size
      -q	the maximum number of bytes in POSIX message queues
      -r	the maximum real-time scheduling priority
      -s	the maximum stack size
      -t	the maximum amount of cpu time in seconds
      -u	the maximum number of user processes
      -v	the size of virtual memory
      -x	the maximum number of file locks
    
    If LIMIT is given, it is the new value of the specified resource; the
    special LIMIT values `soft', `hard', and `unlimited' stand for the
    current soft limit, the current hard limit, and no limit, respectively.
    Otherwise, the current value of the specified resource is printed.  If
    no option is given, then -f is assumed.
    
    Values are in 1024-byte increments, except for -t, which is in seconds,
    -p, which is in increments of 512 bytes, and -u, which is an unscaled
    number of processes.
    
    Exit Status:
    Returns success unless an invalid option is supplied or an error occurs.Move job to the foreground.
    
    Place the job identified by JOB_SPEC in the foreground, making it the
    current job.  If JOB_SPEC is not present, the shell's notion of the
    current job is used.
    
    Exit Status:
    Status of command placed in foreground, or failure if an error occurs.Move jobs to the background.
    
    Place the jobs identified by each JOB_SPEC in the background, as if they
    had been started with `&'.  If JOB_SPEC is not present, the shell's notion
    of the current job is used.
    
    Exit Status:
    Returns success unless job control is not enabled or an error occurs.Null command.
    
    No effect; the command does nothing.
    
    Exit Status:
    Always succeeds.OLDPWD not setParse option arguments.
    
    Getopts is used by shell procedures to parse positional parameters
    as options.
    
    OPTSTRING contains the option letters to be recognized; if a letter
    is followed by a colon, the option is expected to have an argument,
    which should be separated from it by white space.
    
    Each time it is invoked, getopts will place the next option in the
    shell variable $name, initializing name if it does not exist, and
    the index of the next argument to be processed into the shell
    variable OPTIND.  OPTIND is initialized to 1 each time the shell or
    a shell script is invoked.  When an option requires an argument,
    getopts places that argument into the shell variable OPTARG.
    
    getopts reports errors in one of two ways.  If the first character
    of OPTSTRING is a colon, getopts uses silent error reporting.  In
    this mode, no error messages are printed.  If an invalid option is
    seen, getopts places the option character found into OPTARG.  If a
    required argument is not found, getopts places a ':' into NAME and
    sets OPTARG to the option character found.  If getopts is not in
    silent mode, and an invalid option is seen, getopts places '?' into
    NAME and unsets OPTARG.  If a required argument is not found, a '?'
    is placed in NAME, OPTARG is unset, and a diagnostic message is
    printed.
    
    If the shell variable OPTERR has the value 0, getopts disables the
    printing of error messages, even if the first character of
    OPTSTRING is not a colon.  OPTERR has the value 1 by default.
    
    Getopts normally parses the positional parameters ($0 - $9), but if
    more arguments are given, they are parsed instead.
    
    Exit Status:
    Returns success if an option is found; fails if the end of options is
    encountered or an error occurs.Print the name of the current working directory.
    
    Options:
      -L	print the value of $PWD if it names the current working
    	directory
      -P	print the physical directory, without any symbolic links
    
    By default, `pwd' behaves as if `-L' were specified.
    
    Exit Status:
    Returns 0 unless an invalid option is given or the current directory
    cannot be read.QuitRead a line from the standard input and split it into fields.
    
    Reads a single line from the standard input, or from file descriptor FD
    if the -u option is supplied.  The line is split into fields as with word
    splitting, and the first word is assigned to the first NAME, the second
    word to the second NAME, and so on, with any leftover words assigned to
    the last NAME.  Only the characters found in $IFS are recognized as word
    delimiters.
    
    If no NAMEs are supplied, the line read is stored in the REPLY variable.
    
    Options:
      -a array	assign the words read to sequential indices of the array
    		variable ARRAY, starting at zero
      -d delim	continue until the first character of DELIM is read, rather
    		than newline
      -e		use Readline to obtain the line in an interactive shell
      -i text	Use TEXT as the initial text for Readline
      -n nchars	return after reading NCHARS characters rather than waiting
    		for a newline, but honor a delimiter if fewer than NCHARS
    		characters are read before the delimiter
      -N nchars	return only after reading exactly NCHARS characters, unless
    		EOF is encountered or read times out, ignoring any delimiter
      -p prompt	output the string PROMPT without a trailing newline before
    		attempting to read
      -r		do not allow backslashes to escape any characters
      -s		do not echo input coming from a terminal
      -t timeout	time out and return failure if a complete line of input is
    		not read withint TIMEOUT seconds.  The value of the TMOUT
    		variable is the default timeout.  TIMEOUT may be a
    		fractional number.  If TIMEOUT is 0, read returns success only
    		if input is available on the specified file descriptor.  The
    		exit status is greater than 128 if the timeout is exceeded
      -u fd		read from file descriptor FD instead of the standard input
    
    Exit Status:
    The return code is zero, unless end-of-file is encountered, read times out,
    or an invalid file descriptor is supplied as the argument to -u.Read lines from a file into an array variable.
    
    A synonym for `mapfile'.Record lockRemember or display program locations.
    
    Determine and remember the full pathname of each command NAME.  If
    no arguments are given, information about remembered commands is displayed.
    
    Options:
      -d		forget the remembered location of each NAME
      -l		display in a format that may be reused as input
      -p pathname	use PATHNAME is the full pathname of NAME
      -r		forget all remembered locations
      -t		print the remembered location of each NAME, preceding
    		each location with the corresponding NAME if multiple
    		NAMEs are given
    Arguments:
      NAME		Each NAME is searched for in $PATH and added to the list
    		of remembered commands.
    
    Exit Status:
    Returns success unless NAME is not found or an invalid option is given.Remove directories from stack.
    
    Removes entries from the directory stack.  With no arguments, removes
    the top directory from the stack, and changes to the new top directory.
    
    Options:
      -n	Suppresses the normal change of directory when removing
    	directories from the stack, so only the stack is manipulated.
    
    Arguments:
      +N	Removes the Nth entry counting from the left of the list
    	shown by `dirs', starting with zero.  For example: `popd +0'
    	removes the first directory, `popd +1' the second.
    
      -N	Removes the Nth entry counting from the right of the list
    	shown by `dirs', starting with zero.  For example: `popd -0'
    	removes the last directory, `popd -1' the next to last.
    
    The `dirs' builtin displays the directory stack.
    
    Exit Status:
    Returns success unless an invalid argument is supplied or the directory
    change fails.Remove each NAME from the list of defined aliases.
    
    Options:
      -a	remove all alias definitions.
    
    Return success unless a NAME is not an existing alias.Remove jobs from current shell.
    
    Removes each JOBSPEC argument from the table of active jobs.  Without
    any JOBSPECs, the shell uses its notion of the current job.
    
    Options:
      -a	remove all jobs if JOBSPEC is not supplied
      -h	mark each JOBSPEC so that SIGHUP is not sent to the job if the
    	shell receives a SIGHUP
      -r	remove only running jobs
    
    Exit Status:
    Returns success unless an invalid option or JOBSPEC is given.Removes entries from the directory stack.  With no arguments, removes
    the top directory from the stack, and changes to the new top directory.
    
    Options:
      -n	Suppresses the normal change of directory when removing
    	directories from the stack, so only the stack is manipulated.
    
    Arguments:
      +N	Removes the Nth entry counting from the left of the list
    	shown by `dirs', starting with zero.  For example: `popd +0'
    	removes the first directory, `popd +1' the second.
    
      -N	Removes the Nth entry counting from the right of the list
    	shown by `dirs', starting with zero.  For example: `popd -0'
    	removes the last directory, `popd -1' the next to last.
    
    The `dirs' builtin displays the directory stack.Replace the shell with the given command.
    
    Execute COMMAND, replacing this shell with the specified program.
    ARGUMENTS become the arguments to COMMAND.  If COMMAND is not specified,
    any redirections take effect in the current shell.
    
    Options:
      -a name	pass NAME as the zeroth argument to COMMAND
      -c		execute COMMAND with an empty environment
      -l		place a dash in the zeroth argument to COMMAND
    
    If the command cannot be executed, a non-interactive shell exits, unless
    the shell option `execfail' is set.
    
    Exit Status:
    Returns success unless COMMAND is not found or a redirection error occurs.Report time consumed by pipeline's execution.
    
    Execute PIPELINE and print a summary of the real time, user CPU time,
    and system CPU time spent executing PIPELINE when it terminates.
    
    Options:
      -p	print the timing summary in the portable Posix format
    
    The value of the TIMEFORMAT variable is used as the output format.
    
    Exit Status:
    The return status is the return status of PIPELINE.Resume for, while, or until loops.
    
    Resumes the next iteration of the enclosing FOR, WHILE or UNTIL loop.
    If N is specified, resumes the Nth enclosing loop.
    
    Exit Status:
    The exit status is 0 unless N is not greater than or equal to 1.Resume job in foreground.
    
    Equivalent to the JOB_SPEC argument to the `fg' command.  Resume a
    stopped or background job.  JOB_SPEC can specify either a job name
    or a job number.  Following JOB_SPEC with a `&' places the job in
    the background, as if the job specification had been supplied as an
    argument to `bg'.
    
    Exit Status:
    Returns the status of the resumed job.Return a successful result.
    
    Exit Status:
    Always succeeds.Return an unsuccessful result.
    
    Exit Status:
    Always fails.Return from a shell function.
    
    Causes a function or sourced script to exit with the return value
    specified by N.  If N is omitted, the return status is that of the
    last command executed within the function or script.
    
    Exit Status:
    Returns N, or failure if the shell is not executing a function or script.Return the context of the current subroutine call.
    
    Without EXPR, returns "$line $filename".  With EXPR, returns
    "$line $subroutine $filename"; this extra information can be used to
    provide a stack trace.
    
    The value of EXPR indicates how many call frames to go back before the
    current one; the top frame is frame 0.
    
    Exit Status:
    Returns 0 unless the shell is not executing a shell function or EXPR
    is invalid.Returns the context of the current subroutine call.
    
    Without EXPR, returns RunningSegmentation faultSelect words from a list and execute commands.
    
    The WORDS are expanded, generating a list of words.  The
    set of expanded words is printed on the standard error, each
    preceded by a number.  If `in WORDS' is not present, `in "$@"'
    is assumed.  The PS3 prompt is then displayed and a line read
    from the standard input.  If the line consists of the number
    corresponding to one of the displayed words, then NAME is set
    to that word.  If the line is empty, WORDS and the prompt are
    redisplayed.  If EOF is read, the command completes.  Any other
    value read causes NAME to be set to null.  The line read is saved
    in the variable REPLY.  COMMANDS are executed after each selection
    until a break command is executed.
    
    Exit Status:
    Returns the status of the last command executed.Send a signal to a job.
    
    Send the processes identified by PID or JOBSPEC the signal named by
    SIGSPEC or SIGNUM.  If neither SIGSPEC nor SIGNUM is present, then
    SIGTERM is assumed.
    
    Options:
      -s sig	SIG is a signal name
      -n sig	SIG is a signal number
      -l	list the signal names; if arguments follow `-l' they are
    	assumed to be signal numbers for which names should be listed
    
    Kill is a shell builtin for two reasons: it allows job IDs to be used
    instead of process IDs, and allows processes to be killed if the limit
    on processes that you can create is reached.
    
    Exit Status:
    Returns success unless an invalid option is given or an error occurs.Set Readline key bindings and variables.
    
    Bind a key sequence to a Readline function or a macro, or set a
    Readline variable.  The non-option argument syntax is equivalent to
    that found in ~/.inputrc, but must be passed as a single argument:
    e.g., bind '"\C-x\C-r": re-read-init-file'.
    
    Options:
      -m  keymap         Use KEYMAP as the keymap for the duration of this
                         command.  Acceptable keymap names are emacs,
                         emacs-standard, emacs-meta, emacs-ctlx, vi, vi-move,
                         vi-command, and vi-insert.
      -l                 List names of functions.
      -P                 List function names and bindings.
      -p                 List functions and bindings in a form that can be
                         reused as input.
      -S                 List key sequences that invoke macros and their values
      -s                 List key sequences that invoke macros and their values
                         in a form that can be reused as input.
      -V                 List variable names and values
      -v                 List variable names and values in a form that can
                         be reused as input.
      -q  function-name  Query about which keys invoke the named function.
      -u  function-name  Unbind all keys which are bound to the named function.
      -r  keyseq         Remove the binding for KEYSEQ.
      -f  filename       Read key bindings from FILENAME.
      -x  keyseq:shell-command	Cause SHELL-COMMAND to be executed when
    				KEYSEQ is entered.
    
    Exit Status:
    bind returns 0 unless an unrecognized option is given or an error occurs.Set and unset shell options.
    
    Change the setting of each shell option OPTNAME.  Without any option
    arguments, list all shell options with an indication of whether or not each
    is set.
    
    Options:
      -o	restrict OPTNAMEs to those defined for use with `set -o'
      -p	print each shell option with an indication of its status
      -q	suppress output
      -s	enable (set) each OPTNAME
      -u	disable (unset) each OPTNAME
    
    Exit Status:
    Returns success if OPTNAME is enabled; fails if an invalid option is
    given or OPTNAME is disabled.Set export attribute for shell variables.
    
    Marks each NAME for automatic export to the environment of subsequently
    executed commands.  If VALUE is supplied, assign VALUE before exporting.
    
    Options:
      -f	refer to shell functions
      -n	remove the export property from each NAME
      -p	display a list of all exported variables and functions
    
    An argument of `--' disables further option processing.
    
    Exit Status:
    Returns success unless an invalid option is given or NAME is invalid.Set variable values and attributes.
    
    Obsolete.  See `help declare'.Shell commands matching keyword `Shell commands matching keywords `Shell options:
Shift positional parameters.
    
    Rename the positional parameters $N+1,$N+2 ... to $1,$2 ...  If N is
    not given, it is assumed to be 1.
    
    Exit Status:
    Returns success unless N is negative or greater than $#.Signal %dSpecify how arguments are to be completed by Readline.
    
    For each NAME, specify how arguments are to be completed.  If no options
    are supplied, existing completion specifications are printed in a way that
    allows them to be reused as input.
    
    Options:
      -p	print existing completion specifications in a reusable format
      -r	remove a completion specification for each NAME, or, if no
    	NAMEs are supplied, all completion specifications
      -D	apply the completions and actions as the default for commands
    	without any specific completion defined
      -E	apply the completions and actions to "empty" commands --
    	completion attempted on a blank line
    
    When completion is attempted, the actions are applied in the order the
    uppercase-letter options are listed above.  The -D option takes
    precedence over -E.
    
    Exit Status:
    Returns success unless an invalid option is supplied or an error occurs.StoppedStopped (signal)Stopped (tty input)Stopped (tty output)Stopped(%s)Suspend shell execution.
    
    Suspend the execution of this shell until it receives a SIGCONT signal.
    Unless forced, login shells cannot be suspended.
    
    Options:
      -f	force the suspend, even if the shell is a login shell
    
    Exit Status:
    Returns success unless job control is not enabled or an error occurs.TIMEFORMAT: `%c': invalid format characterTerminatedThe mail in %s has been read
There are running jobs.
There are stopped jobs.
There is NO WARRANTY, to the extent permitted by law.
These shell commands are defined internally.  Type `help' to see this list.
Type `help name' to find out more about the function `name'.
Use `info bash' to find out more about the shell in general.
Use `man -k' or `info' to find out more about commands not in this list.

A star (*) next to a name means that the command is disabled.

This is free software; you are free to change and redistribute it.
Type `%s -c "help set"' for more information about shell options.
Type `%s -c help' for more information about shell builtin commands.
Unknown Signal #Unknown Signal #%dUnknown errorUnknown statusUnset values and attributes of shell variables and functions.
    
    For each NAME, remove the corresponding variable or function.
    
    Options:
      -f	treat each NAME as a shell function
      -v	treat each NAME as a shell variable
    
    Without options, unset first tries to unset a variable, and if that fails,
    tries to unset a function.
    
    Some variables cannot be unset; also see `readonly'.
    
    Exit Status:
    Returns success unless an invalid option is given or a NAME is read-only.Urgent IO conditionUsage:	%s [GNU long option] [option] ...
	%s [GNU long option] [option] script-file ...
Use "%s" to leave the shell.
Use the `bashbug' command to report bugs.
User signal 1User signal 2Wait for job completion and return exit status.
    
    Waits for the process identified by ID, which may be a process ID or a
    job specification, and reports its termination status.  If ID is not
    given, waits for all currently active child processes, and the return
    status is zero.  If ID is a a job specification, waits for all processes
    in the job's pipeline.
    
    Exit Status:
    Returns the status of ID; fails if ID is invalid or an invalid option is
    given.Wait for process completion and return exit status.
    
    Waits for the specified process and reports its termination status.  If
    PID is not given, all currently active child processes are waited for,
    and the return code is zero.  PID must be a process ID.
    
    Exit Status:
    Returns the status of ID; fails if ID is invalid or an invalid option is
    given.Window changedWrite arguments to the standard output.
    
    Display the ARGs on the standard output followed by a newline.
    
    Options:
      -n	do not append a newline
    
    Exit Status:
    Returns success unless a write error occurs.Write arguments to the standard output.
    
    Display the ARGs on the standard output followed by a newline.
    
    Options:
      -n	do not append a newline
      -e	enable interpretation of the following backslash escapes
      -E	explicitly suppress interpretation of backslash escapes
    
    `echo' interprets the following backslash-escaped characters:
      \a	alert (bell)
      \b	backspace
      \c	suppress further output
      \e	escape character
      \f	form feed
      \n	new line
      \r	carriage return
      \t	horizontal tab
      \v	vertical tab
      \\	backslash
      \0nnn	the character whose ASCII code is NNN (octal).  NNN can be
    	0 to 3 octal digits
      \xHH	the eight-bit character whose value is HH (hexadecimal).  HH
    	can be one or two hex digits
    
    Exit Status:
    Returns success unless a write error occurs.You have mail in $_You have new mail in $_[ arg... ][[ expression ]]`%c': bad command`%c': invalid format character`%c': invalid symbolic mode character`%c': invalid symbolic mode operator`%s': cannot unbind`%s': invalid alias name`%s': invalid keymap name`%s': missing format character`%s': not a pid or valid job spec`%s': not a valid identifier`%s': unknown function name`)' expected`)' expected, found %s`:' expected for conditional expressionadd_process: pid %5ld (%s) marked as still aliveadd_process: process %5ld (%s) in the_pipelinealias [-p] [name[=value] ... ]all_local_variables: no function context at current scopeargumentargument expectedarray variable support requiredattempted assignment to non-variablebad array subscriptbad command typebad connectorbad jumpbad substitution: no closing "`" in %sbad substitution: no closing `%s' in %sbash_execute_unix_command: cannot find keymap for commandbg [job_spec ...]bind [-lpvsPVS] [-m keymap] [-f filename] [-q name] [-u name] [-r keyseq] [-x keyseq:shell-command] [keyseq:readline-function or readline-command]break [n]bug: bad expassign tokenbuiltin [shell-builtin [arg ...]]caller [expr]can only `return' from a function or sourced scriptcan only be used in a functioncannot allocate new file descriptor for bash input from fd %dcannot create temp file for here-document: %scannot duplicate fd %d to fd %dcannot duplicate named pipe %s as fd %dcannot find %s in shared object %s: %scannot make child for command substitutioncannot make child for process substitutioncannot make pipe for command substitutioncannot make pipe for process substitutioncannot open named pipe %s for readingcannot open named pipe %s for writingcannot open shared object %s: %scannot redirect standard input from /dev/null: %scannot reset nodelay mode for fd %dcannot set and unset shell options simultaneouslycannot set terminal process group (%d)cannot simultaneously unset a function and a variablecannot suspendcannot suspend a login shellcannot use `-f' to make functionscannot use more than one of -anrwcase WORD in [PATTERN [| PATTERN]...) COMMANDS ;;]... esacchild setpgid (%ld to %ld)command [-pVv] command [arg ...]command_substitute: cannot duplicate pipe as fd 1compgen [-abcdefgjksuv] [-o option]  [-A action] [-G globpat] [-W wordlist]  [-F function] [-C command] [-X filterpat] [-P prefix] [-S suffix] [word]complete [-abcdefgjksuv] [-pr] [-DE] [-o option] [-A action] [-G globpat] [-W wordlist]  [-F function] [-C command] [-X filterpat] [-P prefix] [-S suffix] [name ...]completion: function `%s' not foundcompopt [-o|+o option] [-DE] [name ...]conditional binary operator expectedcontinue [n]coproc [NAME] command [redirections]could not find /tmp, please create!cprintf: `%c': invalid format charactercurrentdeleting stopped job %d with process group %lddescribe_pid: %ld: no such piddirectory stack emptydirectory stack indexdirs [-clpv] [+N] [-N]disown [-h] [-ar] [jobspec ...]division by 0dynamic loading not availableecho [-n] [arg ...]echo [-neE] [arg ...]empty array variable nameenable [-a] [-dnps] [-f filename] [name ...]error getting terminal attributes: %serror importing function definition for `%s'error setting terminal attributes: %seval [arg ...]exec [-cl] [-a name] [command [arguments ...]] [redirection ...]exit [n]expected `)'exponent less than 0export [-fn] [name[=value] ...] or export -pexpression expectedexpression recursion level exceededfalsefc [-e ename] [-lnr] [first] [last] or fc -s [pat=rep] [command]fg [job_spec]file descriptor out of rangefilename argument requiredfor (( exp1; exp2; exp3 )); do COMMANDS; donefor NAME [in WORDS ... ] ; do COMMANDS; doneforked pid %d appears in running job %dfree: called with already freed block argumentfree: called with unallocated block argumentfree: start and end chunk sizes differfree: underflow detected; mh_nbytes out of rangefunction name { COMMANDS ; } or name () { COMMANDS ; }future versions of the shell will force evaluation as an arithmetic substitutiongetcwd: cannot access parent directoriesgetopts optstring name [arg]hash [-lr] [-p pathname] [-dt] [name ...]hashing disabledhelp [-dms] [pattern ...]here-document at line %d delimited by end-of-file (wanted `%s')history [-c] [-d offset] [n] or history -anrw [filename] or history -ps arg [arg...]history positionhistory specificationhits	command
identifier expected after pre-increment or pre-decrementif COMMANDS; then COMMANDS; [ elif COMMANDS; then COMMANDS; ]... [ else COMMANDS; ] fiinitialize_job_control: getpgrp failedinitialize_job_control: line disciplineinitialize_job_control: setpgidinvalid arithmetic baseinvalid baseinvalid character %d in exportstr for %sinvalid hex numberinvalid numberinvalid octal numberinvalid signal numberjob %d started without job controljob_spec [&]jobs [-lnprs] [jobspec ...] or jobs -x command [args]kill [-s sigspec | -n signum | -sigspec] pid | jobspec ... or kill -l [sigspec]last command: %s
let arg [arg ...]limitline %d: line editing not enabledlocal [option] name[=value] ...logout
logout [n]loop countmake_here_document: bad instruction type %dmake_local_variable: no function context at current scopemake_redirection: redirection instruction `%d' out of rangemalloc: block on free list clobberedmalloc: failed assertion: %s
mapfile [-n count] [-O origin] [-s count] [-t] [-u fd] [-C callback] [-c quantum] [array]migrate process to another CPUmissing `)'missing `]'missing hex digit for \xnetwork operations not supportedno `=' in exportstr for %sno closing `%c' in %sno command foundno help topics match `%s'.  Try `help help' or `man -k %s' or `info %s'.no job controlno job control in this shellno match: %sno other directoryno other options allowed with `-x'not currently executing completion functionnot login shell: use `exit'octal numberonly meaningful in a `for', `while', or `until' looppipe errorpop_scope: head of shell_variables not a temporary environment scopepop_var_context: head of shell_variables not a function contextpop_var_context: no global_variables contextpopd [-n] [+N | -N]power failure imminentprint_command: bad connector `%d'printf [-v var] format [arguments]progcomp_insert: %s: NULL COMPSPECprogramming errorpushd [-n] [+N | -N | dir]pwd [-LP]read [-ers] [-a array] [-d delim] [-i text] [-n nchars] [-N nchars] [-p prompt] [-t timeout] [-u fd] [name ...]read error: %d: %sreadarray [-n count] [-O origin] [-s count] [-t] [-u fd] [-C callback] [-c quantum] [array]realloc: called with unallocated block argumentrealloc: start and end chunk sizes differrealloc: underflow detected; mh_nbytes out of rangerecursion stack underflowredirection error: cannot duplicate fdregister_alloc: %p already in table as allocated?
register_alloc: alloc table is full with FIND_ALLOC?
register_free: %p already in table as free?
restrictedreturn [n]run_pending_traps: bad value in trap_list[%d]: %prun_pending_traps: signal handler is SIG_DFL, resending %d (%s) to myselfsave_bash_input: buffer already exists for new fd %dselect NAME [in WORDS ... ;] do COMMANDS; donesetlocale: %s: cannot change locale (%s)setlocale: %s: cannot change locale (%s): %ssetlocale: LC_ALL: cannot change locale (%s)setlocale: LC_ALL: cannot change locale (%s): %sshell level (%d) too high, resetting to 1shift [n]shift countshopt [-pqsu] [-o] [optname ...]sigprocmask: %d: invalid operationsource filename [arguments]start_pipeline: pgrp pipesuspend [-f]syntax errorsyntax error in conditional expressionsyntax error in conditional expression: unexpected token `%s'syntax error in expressionsyntax error near `%s'syntax error near unexpected token `%s'syntax error: `((%s))'syntax error: `;' unexpectedsyntax error: arithmetic expression requiredsyntax error: invalid arithmetic operatorsyntax error: operand expectedsyntax error: unexpected end of filesystem crash imminenttest [expr]time [-p] pipelinetimestoo many argumentstrap [-lp] [[arg] signal_spec ...]trap_handler: bad signal %dtruetype [-afptP] name [name ...]ulimit [-SHacdefilmnpqrstuvx] [limit]umask [-p] [-S] [mode]unalias [-a] name [name ...]unexpected EOF while looking for `]]'unexpected EOF while looking for matching `%c'unexpected EOF while looking for matching `)'unexpected argument `%s' to conditional binary operatorunexpected argument `%s' to conditional unary operatorunexpected argument to conditional binary operatorunexpected argument to conditional unary operatorunexpected token %d in conditional commandunexpected token `%c' in conditional commandunexpected token `%s' in conditional commandunexpected token `%s', conditional binary operator expectedunexpected token `%s', expected `)'unknownunknown command errorunset [-f] [-v] [name ...]until COMMANDS; do COMMANDS; donevalue too great for basevariables - Names and meanings of some shell variableswait [id]wait [pid]wait: pid %ld is not a child of this shellwait_for: No record of process %ldwait_for_job: job %d is stoppedwaitchld: turning on WNOHANG to avoid indefinite blockwarning: warning: %s: %swarning: -C option may not work as you expectwarning: -F option may not work as you expectwhile COMMANDS; do COMMANDS; donewrite error: %sxtrace fd (%d) != fileno xtrace fp (%d)xtrace_set: %d: invalid file descriptorxtrace_set: NULL file pointer{ COMMANDS ; }Project-Id-Version: bash 4.1
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POT-Creation-Date: 2011-01-28 22:09-0500
PO-Revision-Date: 2010-02-11 19:42+0930
Last-Translator: Clytie Siddall <clytie@riverland.net.au>
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	quÃ¡ háº¡n trong khi Ä‘á»£i dá»¯ liá»‡u nháºp nÃªn tá»± Ä‘á»™ng Ä‘Äƒng xuáº¥t
	-%s hoáº·c -o tÃ¹y chá»n
	-irsD hoáº·c -c lá»‡nh or -O shopt_option		(chá»‰ cuá»™c gá»i)

malloc (cáº¥p phÃ¡t bá»™ nhá»›): %s:%d: kháº³ng Ä‘á»‹nh bá»‹ há»ng
  (wd: %s) (lÃµi bá»‹ Ä‘á»•)dÃ²ng$%s: khÃ´ng thá»ƒ gÃ¡n báº±ng cÃ¡ch nÃ y%c%c: tÃ¹y chá»n khÃ´ng há»£p lá»‡%d: bá»™ mÃ´ táº£ táºp tin khÃ´ng há»£p lá»‡: %s%s cÃ³ thá»ƒ Ä‘Æ°á»£c gá»i thÃ´ng qua %s cÃ³ chuá»—i xuáº¥t (exportstr) vÃ´ giÃ¡ trá»‹%s lÃ  %s
%s lÃ  hÃ m
%s lÃ  dá»±ng sáºµn trÃ¬nh bao
%s lÃ  tá»« khoÃ¡ trÃ¬nh bao
%s cÃ³ bÃ danh tá»›i Â« %s Â»
%s cÃ³ kÃ½ hiá»‡u lá»™n xá»™n (%s)
%s khÃ´ng Ä‘Æ°á»£c tá»• há»£p vá»›i phÃm.
%s á»Ÿ ngoáº¡i pháº¡m vi%s%s%s: %s (hiá»‡u bÃ i lá»—i lÃ  Â« %s Â»)%s: %s á»Ÿ ngoáº¡i pháº¡m vi%s: %s: bá»™ thÃ´ng dá»‹ch sai%s: %s: khÃ´ng thá»ƒ má»Ÿ dÆ°á»›i dáº¡ng Táº¬P_TIN%s: %s: sai Ä‘áº·t giÃ¡ trá»‹ cho bá»™ mÃ´ táº£ táºp tin váº¿t%s: %s: pháº£i sá» dá»¥ng chá»¯ tháº¥p khi gÃ¡n máº£ng káº¿t há»£p%s: %s:%d: khÃ´ng thá»ƒ cáº¥p phÃ¡t %lu byte%s: %s:%d: khÃ´ng thá»ƒ cáº¥p phÃ¡t %lu byte (%lu byte Ä‘Æ°á»£c cáº¥p phÃ¡t)%s: Ä‘áº·c táº£ cÃ´ng viá»‡c mÆ¡ há»“%s: lá»i chuyá»ƒn hÆ°á»›ng mÆ¡ há»“%s: Ä‘á»‘i sá»‘ pháº£i lÃ  mÃ£ sá»‘ cá»§a tiáº¿n trÃ¬nh (PID) hoáº·c cÃ´ng viá»‡c%s: Ä‘áº·c táº£ Ä‘Æ°á»ng dáº«n máº¡ng sai%s: sai thay tháº¿%s: Ä‘á»£i toÃ¡n tá» nhá»‹ phÃ¢n%s: khÃ´ng thá»ƒ cáº¥p phÃ¡t %lu byte%s: khÃ´ng thá»ƒ cáº¥p phÃ¡t %lu byte (%lu byte Ä‘Æ°á»£c cáº¥p phÃ¡t)%s: khÃ´ng thá»ƒ gÃ¡n cho biáº¿n bá»™ bÃ´ táº£ táºp tin%s: khÃ´ng thá»ƒ gÃ¡n danh sÃ¡ch cho bá»™ pháºn cá»§a máº£ng%s: khÃ´ng thá»ƒ cáº¥p phÃ¡t cho chá»‰ sá»‘ khÃ´ng thuá»™c sá»‘%s: khÃ´ng thá»ƒ chuyá»ƒn Ä‘á»•i máº£ng káº¿t há»£p sang máº£ng theo sá»‘ mÅ©%s: khÃ´ng thá»ƒ chuyá»ƒn Ä‘á»•i máº£ng theo sá»‘ mÅ© sang máº£ng káº¿t há»£p%s: khÃ´ng thá»ƒ táº¡o %s%s: khÃ´ng thá»ƒ xoÃ¡: %s%s: khÃ´ng thá»ƒ phÃ¡ há»§y biáº¿n máº£ng báº±ng cÃ¡ch nÃ y%s: khÃ´ng thá»ƒ thá»±c hiá»‡n táºp tin nhá»‹ phÃ¢n%s: khÃ´ng thá»ƒ thá»±c hiá»‡n: %s%s: khÃ´ng thá»ƒ láº¥y giá»›i háº¡n: %s%s: khÃ´ng thá»ƒ sá»a Ä‘á»•i giá»›i háº¡n: %s%s: khÃ´ng thá»ƒ má»Ÿ táºp tin táº¡m thá»i: %s%s: khÃ´ng thá»ƒ má»Ÿ : %s%s: khÃ´ng thá»ƒ ghi Ä‘Ã¨ lÃªn táºp tin Ä‘Ã£ cÃ³%s: khÃ´ng thá»ƒ Ä‘á»c %s%s: khÃ´ng thá»ƒ há»§y Ä‘áº·t%s: khÃ´ng thá»ƒ há»§y Ä‘áº·t: %s chá»‰ Ä‘á»c%s: khÃ´ng tÃ¬m tháº¥y lá»‡nh%s: gáº·p lá»—i khi láº¥y thÆ° má»¥c hiá»‡n thá»i: %s: %s
%s: lá»—i biá»ƒu thá»©c
%s: táºp tin quÃ¡ lá»›n%s: khÃ´ng tÃ¬m tháº¥y táºp tin%s: kÃ½ tá»± khÃ¡c khoáº£ng tráº¯ng Ä‘áº§u tiÃªn khÃ´ng pháº£i lÃ  dáº¥u sá»• chÃ©o ngÆ°á»£c Â« / Â»%s: báº£ng kÃ½ hiá»‡u lá»™n xá»™n cÃ²n rá»—ng
%s: lá»—i má»Ÿ rá»™ng lá»‹ch sá»%s: khÃ´ng rÃµ mÃ¡y%s: tÃ¹y chá»n khÃ´ng Ä‘Æ°á»£c phÃ©p -- %c
%s: inlib bá»‹ lá»—i%s: Ä‘á»£i biá»ƒu thá»©c sá»‘ nguyÃªn%s: tÃªn hÃ nh vi khÃ´ng há»£p lá»‡%s: gá»‘c máº£ng khÃ´ng há»£p lá»‡%s: khoÃ¡ mÃ ng káº¿t há»£p khÃ´ng há»£p lá»‡%s: lÆ°á»£ng gá»i ngÆ°á»£c khÃ´ng há»£p lá»‡%s: sai xÃ¡c Ä‘á»‹nh bá»™ mÃ´ táº£ táºp tin%s: Ä‘á»‘i sá»‘ giá»›i háº¡n khÃ´ng há»£p lá»‡%s: sai Ä‘áº¿m dÃ²ng%s: tÃ¹y chá»n khÃ´ng há»£p lá»‡%s: tÃªn tÃ¹y chá»n khÃ´ng há»£p lá»‡%s: dá»‹ch vá»¥ khÃ´ng há»£p lá»‡%s: tÃªn tÃ¹y chá»n trÃ¬nh bao khÃ´ng há»£p lá»‡%s: sai xÃ¡c Ä‘á»‹nh tÃn hiá»‡u%s: sai xÃ¡c Ä‘á»‹nh quÃ¡ háº¡n%s: lÃ  thÆ° má»¥c%s: cÃ´ng viá»‡c %d Ä‘Ã£ cháº¡y trong ná»n%s: cÃ´ng viá»‡c bá»‹ cháº¥m dá»©t%s: dÃ²ng %d:%s: thiáº¿u dáº¥u hai cháº¥m Ä‘á»‹nh giá»›i%s: khÃ´ng cÃ³ Ä‘áº·c táº£ Ä‘iá»n ná»‘t%s: khÃ´ng cÃ³ Ä‘iá»u khiá»ƒn cÃ´ng viá»‡c%s: khÃ´ng cÃ³ cÃ´ng viá»‡c nhÆ° váºy%s: khÃ´ng pháº£i hÃ m%s: khÃ´ng pháº£i lÃ  táºp tin chuáº©n%s: khÃ´ng pháº£i dá»±ng sáºµn trÃ¬nh bao%s: khÃ´ng pháº£i biáº¿n máº£ng%s: khÃ´ng pháº£i biáº¿n phá»¥ lá»¥c%s khÃ´ng pháº£i Ä‘Æ°á»£c náº¡p Ä‘á»™ng%s: khÃ´ng tÃ¬m tháº¥y%s: cáº§n thiáº¿t Ä‘á»‘i sá»‘ thuá»™c sá»‘%s: tÃ¹y chá»n cáº§n thiáº¿t má»™t Ä‘á»‘i sá»‘%s: tÃ¹y chá»n cáº§n thiáº¿t Ä‘á»‘i sá»‘ -- %c
%s: tham sá»‘ vÃ´ giÃ¡ trá»‹ hoáº·c chÆ°a Ä‘Æ°á»£c Ä‘áº·t%s: hÃ m chá»‰ Ä‘á»c%s: biáº¿n chá»‰ Ä‘á»c%s: bá»‹ háº¡n cháº¿%s: bá»‹ háº¡n cháº¿: khÃ´ng thá»ƒ chuyá»ƒn hÆ°á»›ng káº¿t xuáº¥t%s: bá»‹ háº¡n cháº¿: khÃ´ng thá»ƒ ghi rÃµ dáº¥u sá»• chÃ©o Â« / Â» trong tÃªn cÃ¢u lá»‡nh%s: biá»ƒu thá»©c chuá»—i phá»¥ < 0%s: Ä‘á»£i toÃ¡n tá» nguyÃªn phÃ¢n%s: biáº¿n chÆ°a tá»• há»£p%s: sá» dá»¥ng:(( biá»ƒu_thá»©c ))(lÃµi bá»‹ Ä‘á»•)(wd bÃ¢y giá»: %s)
. tÃªn_táºp_tin [Ä‘á»‘i_sá»‘ ...]/dev/(tcp|udp)/host/port khÃ´ng Ä‘Æ°á»£c há»— trá»£ khi khÃ´ng cÃ³ chá»©c nÄƒng cháº¡y máº¡ngÂ« /tmp Â» pháº£i lÃ  tÃªn thÆ° má»¥c há»£p lá»‡:<khÃ´ng cÃ³ thÆ° má»¥c hiá»‡n thá»i>CÃ¢u lá»‡nh Há»¦Y Bá»ŽHá»§y bá»...ThÃªm thÆ° má»¥c vÃ o Ä‘á»‘ng.

ThÃªm má»™t thÆ° má»¥c vÃ o Ä‘áº§u cá»§a Ä‘á»‘ng thÆ° má»¥c, hoáº·c xoay Ä‘á»‘ng,
	lÃ m cho thÆ° má»¥c má»›i Ä‘áº§u Ä‘á»‘ng lÃ  thÆ° má»¥c lÃ m viá»‡c hiá»‡n thá»i.
KhÃ´ng cÃ³ Ä‘á»‘i sá»‘ thÃ¬ trao Ä‘á»•i hai thÆ° má»¥c Ä‘áº§u.

+N	Xoay Ä‘á»‘ng Ä‘á»ƒ thÆ° má»¥c thá»© N (Ä‘áº¿m tá»« bÃªn trÃ¡i danh sÃ¡ch
	Ä‘Æ°á»£c hiá»ƒn thá»‹ báº±ng Â« dirs Â», báº¯t Ä‘áº§u tá»« sá»‘ khÃ´ng) dá»i lÃªn Ä‘áº§u.

-N	Xoay Ä‘á»‘ng Ä‘á»ƒ thÆ° má»¥c thá»© N (Ä‘áº¿m tá»« bÃªn pháº£i danh sÃ¡ch
	Ä‘Æ°á»£c hiá»ƒn thá»‹ báº±ng Â« dirs Â», báº¯t Ä‘áº§u tá»« sá»‘ khÃ´ng) dá»i lÃªn Ä‘áº§u.

-n	Thu há»“i chá»©c nÄƒng chuyá»ƒn Ä‘á»•i bÃ¬nh thÆ°á»ng khi thÃªm thÆ° má»¥c
	vÃ o Ä‘á»‘ng, Ä‘á»ƒ thao tÃ¡c chá»‰ Ä‘á»‘ng.

dir	ThÃªm T_Má»¤C vÃ o Ä‘áº§u Ä‘á»‘ng thÆ° má»¥c, lÃ m cho nÃ³ lÃ  thÆ° má»¥c
	lÃ m viá»‡c hiá»‡n thá»i má»›i.

Dá»±ng sáºµn Â« dirs Â» thÃ¬ hiá»ƒn thá»‹ Ä‘á»‘ng thÆ° má»¥c.

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i thÃ nh cÃ´ng náº¿u khÃ´ng Ä‘Æ°a ra Ä‘á»‘i sá»‘ sai,
	cÅ©ng khÃ´ng sai chuyá»ƒn Ä‘á»•i thÆ° má»¥c.ThÃªm má»™t thÆ° má»¥c vÃ o Ä‘áº§u cá»§a Ä‘á»‘ng thÆ° má»¥c, hoáº·c xoay Ä‘á»‘ng,
	lÃ m cho thÆ° má»¥c má»›i Ä‘áº§u Ä‘á»‘ng lÃ  thÆ° má»¥c lÃ m viá»‡c hiá»‡n thá»i.
	KhÃ´ng cÃ³ Ä‘á»‘i sá»‘ thÃ¬ trao Ä‘á»•i hai thÆ° má»¥c Ä‘áº§u.

	TÃ¹y chá»n:
		-n	thu há»“i chá»©c nÄƒng chuyá»ƒn Ä‘á»•i thÆ° má»¥c bÃ¬nh thÆ°á»ng
	khi thÃªm thÆ° má»¥c vÃ o Ä‘á»‘ng, thÃ¬ chá»‰ thao tÃ¡c Ä‘á»‘ng chÃnh nÃ³.

	Äá»‘i sá»‘ :
		+N	xoay Ä‘á»‘ng Ä‘á»ƒ mÃ  thÆ° má»¥c thá»© N
			(Ä‘áº¿m tá»« bÃªn trÃ¡i danh sÃ¡ch hiá»ƒn thá»‹ theo thÆ° má»¥c,
			báº¯t Ä‘áº§u tá»« sá»‘ khÃ´ng) náº±m á»Ÿ Ä‘áº§u.

		-N	xoay Ä‘á»‘ng Ä‘á»ƒ mÃ  thÆ° má»¥c thá»© N
			(Ä‘áº¿m tá»« bÃªn pháº£i danh sÃ¡ch hiá»ƒn thá»‹ theo thÆ° má»¥c,
			báº¯t Ä‘áº§u tá»« sá»‘ khÃ´ng) náº±m á»Ÿ Ä‘áº§u.

		dir	thÃªm DIR vÃ o Ä‘áº§u Ä‘á»‘ng thÆ° má»¥c,
		thÃ¬ lÃ m cho nÃ³ thÆ° má»¥c lÃ m viá»‡c hiá»‡n thá»i.

	Dá»±ng sáºµn Â« dirs Â» hiá»ƒn thá»‹ Ä‘á»‘ng thÆ° má»¥c.BÃ¡o Ä‘á»™ng (há»“ sÆ¡)BÃ¡o Ä‘á»™ng (áº£o)Äá»“ng há»“ bÃ¡o thá»©cSá»‘ há»c cho vÃ²ng láº·p.

	TÆ°Æ¡ng Ä‘Æ°Æ¡ng vá»›i:
    	(( EXP1 ))
    	while (( EXP2 )); do
    		COMMANDS
    		(( EXP3 ))
    	done
EXP1, EXP2, EXP3 lÃ  biá»ƒu thá»©c sá»‘ há»c.
Bá» sÃ³t biá»ƒu thá»©c nÃ o thÃ¬ á»©ng xá» nhÆ° nÃ³ tÃnh lÃ  1.
	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i tráº¡ng thÃ¡i cá»§a cÃ¢u lá»‡nh cuá»‘i cÃ¹ng Ä‘Æ°á»£c cháº¡y.Theo váº¿t/Ä‘áº·t báº«y BPTSai gá»i há»‡ thá»‘ngTÃn hiá»‡u giáº£á»ng dáº«n bá»‹ há»nglá»—i máº¡ch ná»‘iGiá»›i háº¡n CPUTiáº¿n trÃ¬nh con Ä‘Ã£ giáº¿t hoáº·c dá»«ngTÃªn vÃ  sá» dá»¥ng cá»§a má»—i biáº¿n trÃ¬nh bao thÆ°á»ng dÃ¹ng.

BASH_VERSION	ThÃ´ng tin phiÃªn báº£n vá» pháº§n má»m Bash nÃ y.
    CDPATH	Danh sÃ¡ch cÃ¡c thÆ° má»¥c Ä‘á»‹nh giá»›i báº±ng dáº¥u hai cháº¥m,
	qua Ä‘Ã³ cáº§n tÃ¬m kiáº¿m thÆ° má»¥c Ä‘Æ°á»£c Ä‘Æ°a ra dáº¡ng Ä‘á»‘i sá»‘ vá»›i Â« cd Â».
    GLOBIGNORE	Danh sÃ¡ch cÃ¡c máº«u Ä‘á»‹nh giá»›i báº±ng dáº¥u hai cháº¥m,
	mÃ  diá»…n táº£ cÃ¡c tÃªn táºp tin cáº§n bá» qua khi má»Ÿ rá»™ng tÃªn Ä‘Æ°á»ng dáº«n.
    HISTFILE	TÃªn cá»§a táºp tin chá»©a lá»‹ch sá» cÃ¢u lá»‡nh cá»§a báº¡n.
    HISTFILESIZE	Sá»‘ tá»‘i Ä‘a cÃ¡c dÃ²ng cÃ³ thá»ƒ Ä‘Æ°á»£c táºp tin nÃ y chá»©a.
    HISTSIZE	Sá»‘ tá»‘i Ä‘a cÃ¡c dÃ²ng lá»‹ch sá» mÃ  trÃ¬nh bao Ä‘ang cháº¡y cÃ³ thá»ƒ truy cáºp.
    HOME	TÃªn Ä‘Æ°á»ng dáº«n Ä‘áº§y Ä‘á»§ Ä‘áº¿n thÆ° má»¥c Ä‘Äƒng nháºp cá»§a báº¡n.
    HOSTNAME	TÃªn cá»§a mÃ¡y chá»§ hiá»‡n thá»i cá»§a báº¡n.
    HOSTTYPE	Kiá»ƒu CPU dÆ°á»›i Ä‘Ã³ phiÃªn báº£n Bash nÃ y Ä‘ang cháº¡y.
    IGNOREEOF	Äiá»u khiá»ƒn á»©ng xá» cá»§a trÃ¬nh bao khi nháºn
	kÃ½ tá»± káº¿t thÃºc táºp tin (EOF) lÃ  dá»¯ liá»‡u nháºp Ä‘á»™c nháº¥t.
	Äáº·t thÃ¬ giÃ¡ trá»‹ cá»§a nÃ³ lÃ  sá»‘ kÃ½ tá»± EOF cÃ³ thá»ƒ gáº·p liÃªn tá»¥c
	trÃªn má»™t dÃ²ng rá»—ng trÆ°á»›c khi trÃ¬nh bao sáº½ thoÃ¡t (máº·c Ä‘á»‹nh lÃ  10).
	KhÃ´ng Ä‘áº·t thÃ¬ EOF sáº½ cÅ©ng káº¿t thÃºc nháºp vÃ o.
    MACHTYPE	Má»™t chuá»—i diá»…n táº£ há»‡ thá»‘ng hiá»‡n thá»i trÃªn Ä‘Ã³ Bash Ä‘ang cháº¡y.
    MAILCHECK	Khoáº£ng thá»i gian, theo giÃ¢y, giá»¯a hai láº§n Bash kiá»ƒm tra
	cÃ³ thÆ° má»›i chÆ°a.
    MAILPATH	Danh sÃ¡ch cÃ¡c tÃªn táºp tin Ä‘á»‹nh giá»›i báº±ng dáº¥u hai cháº¥m
	trong Ä‘Ã³ Bash kiá»ƒm tra cÃ³ thÆ° má»›i chÆ°a.
    OSTYPE	PhiÃªn báº£n UNIX trÃªn Ä‘Ã³ Bash nÃ y Ä‘ang cháº¡y.
    PATH	Danh sÃ¡ch cÃ¡c thÆ° má»¥c Ä‘á»‹nh giá»›i báº±ng dáº¥u hai cháº¥m,
	qua Ä‘Ã³ cáº§n tÃ¬m kiáº¿m cÃ¢u lá»‡nh.
    PROMPT_COMMAND	Má»™t cÃ¢u lá»‡nh cáº§n thá»±c hiá»‡n trÆ°á»›c khi in ra
	má»—i chuá»—i nháº¯c chÃnh.
    PS1		Chuá»—i nháº¯c chÃnh.
    PS2		Chuá»—i nháº¯c phá»¥.
    PWD		TÃªn Ä‘Æ°á»ng dáº«n Ä‘áº§y Ä‘á»§ cá»§a thÆ° má»¥c hiá»‡n táº¡i.
    SHELLOPTS	Danh sÃ¡ch cÃ¡c tÃ¹y chá»n trÃ¬nh bao Ä‘Ã£ hiá»‡u lá»±c
	Ä‘á»‹nh giá»›i báº±ng dáº¥u hai cháº¥m.
    TERM	TÃªn cá»§a kiá»ƒu thiáº¿t bá»‹ cuá»‘i hiá»‡n thá»i.
    TIMEFORMAT	Äá»‹nh dáº¡ng káº¿t xuáº¥t cho thá»‘ng kÃª Ä‘áº¿m thá»i gian
	Ä‘Æ°á»£c hiá»ƒn thá»‹ bá»Ÿi tá»« dÃ nh riÃªng Â« time Â».
    auto_resume	CÃ³ giÃ¡ trá»‹ thÃ¬ trÆ°á»›c tiÃªn tÃ¬m má»™t tá»« lá»‡nh xuáº¥t hiá»‡n má»™t mÃ¬nh
	trÃªn má»™t dÃ²ng, trong danh sÃ¡ch cÃ¡c cÃ´ng viá»‡c bá»‹ dá»«ng cháº¡y.
	TÃ¬m Ä‘Æ°á»£c thÃ¬ Ä‘áº·t cÃ´ng viá»‡c Ä‘Ã³ vÃ o trÆ°á»›c.
	GiÃ¡ trá»‹ Â« exact Â» (chÃnh xÃ¡c) cÃ³ nghÄ©a lÃ  tá»« lá»‡nh pháº£i tÆ°Æ¡ng á»©ng
	chÃnh xÃ¡c vá»›i má»™t cÃ¢u lá»‡nh trong danh sÃ¡ch cÃ¡c cÃ´ng viá»‡c bá»‹ dá»«ng cháº¡y.
	GiÃ¡ trá»‹ Â« substring Â» (chuá»—i phá»¥) cÃ³ nghÄ©a lÃ  tá»« lá»‡nh pháº£i tÆ°Æ¡ng á»©ng
	vá»›i má»™t chuá»—i phá»¥ cá»§a cÃ´ng viá»‡c Ä‘Ã³.
    histchars	CÃ¡c kÃ½ tá»± Ä‘iá»u khiá»ƒn má»Ÿ rá»™ng vÃ  thay tháº¿ nhanh lá»‹ch sá».
	KÃ½ tá»± Ä‘áº§u tiÃªn thÆ°á»ng lÃ  kÃ½ tá»± thay tháº¿ lá»‹ch sá», thÆ°á»ng lÃ  Â« ! Â».
	KÃ½ tá»± thá»© hai lÃ  kÃ½ tá»± thay tháº¿ nhanh, thÆ°á»ng lÃ  Â« ^ Â».
	KÃ½ tá»± thá»© ba lÃ  kÃ½ tá»± ghi chÃº vá» lá»‹ch sá», thÆ°á»ng lÃ  Â« # Â».
    HISTIGNORE	Danh sÃ¡ch cÃ¡c máº«u Ä‘á»‹nh giá»›i báº±ng dáº¥u hai cháº¥m,
	Ä‘Æ°á»£c Ã¹ng Ä‘á»ƒ quyáº¿t Ä‘á»‹nh nhá»¯ng cÃ¢u lá»‡nh nÃ o nÃªn Ä‘Æ°á»£c lÆ°u
	vÃ o danh sÃ¡ch lá»‹ch sá».
Tiáº¿p tá»¥cTÃ¡c quyá»n Â© nÄƒm 2009 cá»§a Tá»• chá»©c Pháº§n má»m Tá»± do.
Táº¡o má»™t tiáº¿n trÃ¬nh Ä‘á»“ng cháº¡y cÃ³ tÃªn TÃŠN.

	Thá»±c hiá»‡n cÃ¢u Lá»†NH má»™t cÃ¡ch khÃ´ng Ä‘á»“ng bá»™, cÃ³ Ä‘áº§u vÃ  tiÃªu chuáº©n
	vÃ  Ä‘áº§u ra tiÃªu chuáº©n cá»§a cÃ¢u lá»‡nh nÃ y Ä‘Æ°á»£c káº¿t ná»‘i thÃ´ng qua má»™t á»‘ng dáº«n
	tá»›i cÃ¡c bá»™ mÃ´ táº£ táºp tin Ä‘Æ°á»£c gÃ¡n cho chá»‰ sá»‘ 0 vÃ  1 cá»§a má»™t biáº¿n máº£ng TÃŠN
	trong trÃ¬nh bao Ä‘ang cháº¡y.
	TÃªn máº·c Ä‘á»‹nh lÃ  Â« COPROC Â».

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i tráº¡ng thÃ¡i thoÃ¡t cá»§a cÃ¢u Lá»†NH.XÃ¡c Ä‘á»‹nh cÃ¡c biáº¿n cá»¥c bá»™.

	Táº¡o má»™t biáº¿n cá»¥c bá»™ tÃªn TÃŠN, vÃ  gÃ¡n cho nÃ³ GIÃ_TRá»Š.
	TÃ™Y_CHá»ŒN cÃ³ thá»ƒ lÃ  báº¥t cá»© tÃ¹y chá»n nÃ o Ä‘Æ°á»£c Â« declare Â» cháº¥p nháºn.

	Biáº¿n cá»¥c bá»™ chá»‰ dÃ¹ng Ä‘Æ°á»£c bÃªn trong chá»©c nÄƒng;
		chá»‰ chá»©c nÄƒng trong Ä‘Ã³ nÃ³ Ä‘Æ°á»£c xÃ¡c Ä‘á»‹nh
		(vÃ  cÃ¡c chá»©c nÄƒng con) cÃ³ kháº£ nÄƒng phÃ¡t hiá»‡n nÃ³.

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i thÃ nh cÃ´ng náº¿u khÃ´ng Ä‘Æ°a ra tÃ¹y chá»n sai hay gáº·p lá»—i,
	vÃ  náº¿u trÃ¬nh bao Ä‘ang cháº¡y chá»©c nÄƒng.XÃ¡c Ä‘á»‹nh hoáº·c hiá»ƒn thá»‹ bÃ danh.

	KhÃ´ng Ä‘Æ°a ra Ä‘á»‘i sá»‘ thÃ¬ Â« alias Â» in ra danh sÃ¡ch cÃ¡c bÃ danh
	theo Ä‘á»‹nh dáº¡ng cÃ³ thá»ƒ dÃ¹ng láº¡i Ä‘Æ°á»£c Â« bÃ_danh TÃŠN=GIÃ_TRá»Š Â»
	trÃªn Ä‘áº§u ra tiÃªu chuáº©n.

	CÃ³ Ä‘á»‘i sá»‘ thÃ¬ má»™t bÃ danh Ä‘Æ°á»£c xÃ¡c Ä‘á»‹nh cho má»—i TÃŠN cÃ³ giÃ¡ trá»‹ Ä‘Æ°a ra.
	Má»™t dáº¥u cÃ¡ch theo sau trong GIÃ_TRá»Š thÃ¬ gÃ¢y ra tá»« káº¿ tiáº¿p Ä‘Æ°á»£c kiá»ƒm tra
	cÃ³ bÃ danh Ä‘Æ°á»£c thay tháº¿ khi bÃ danh Ä‘Æ°á»£c má»Ÿ rá»™ng.

	TÃ¹y chá»n:
		-p	in ra táº¥t cáº£ cÃ¡c bÃ danh Ä‘Ã£ xÃ¡c Ä‘á»‹nh theo má»™t Ä‘á»‹nh dáº¡ng
			cÃ³ thá»ƒ dÃ¹ng láº¡i Ä‘Æ°á»£c

	Tráº¡ng thÃ¡i thoÃ¡t:
	bÃ danh tráº£ láº¡i ÄÃºng náº¿u khÃ´ng Ä‘Æ°a ra TÃŠN chÆ°a cÃ³ bÃ danh Ä‘Æ°á»£c xÃ¡c Ä‘á»‹nh.XÃ¡c Ä‘á»‹nh chá»©c nÄƒng trÃ¬nh bao.

	Táº¡o má»™t chá»©c nÄƒng trÃ¬nh bao cÃ³ TÃŠN.
	Khi Ä‘Æ°á»£c gá»i dÆ°á»›i dáº¡ng má»™t cÃ¢u lá»‡nh Ä‘Æ¡n giáº£n,
	TÃŠN cháº¡y cÃ¡c cÃ¢u Lá»†NH theo ngá»¯ cáº£nh cá»§a trÃ¬nh bao Ä‘ang gá»i.
	Khi TÃŠN Ä‘Æ°á»£c gá»i, cÃ¡c Ä‘á»‘i sá»‘ Ä‘Æ°á»£c gá»i cho chá»©c nÄƒng dÆ°á»›i dáº¡ng $1...$n,
	vÃ  tÃªn chá»©c nÄƒng náº±m trong $FUNCNAME.

	TrÃ¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i thÃ nh cÃ´ng náº¿u TÃŠN khÃ´ng pháº£i chá»‰ Ä‘á»c.Hiá»ƒn thá»‹ Ä‘á»‘ng thÆ° má»¥c.

	Hiá»ƒn thá»‹ danh sÃ¡ch cÃ¡c thÆ° má»¥c Ä‘Æ°á»£c nhá»› hiá»‡n thá»i.
	CÃ¢u lá»‡nh Â« pushd Â» sáº½ thÃªm thÆ° má»¥c vÃ o danh sÃ¡ch;
	cÃ¢u lá»‡nh Â« popd Â» cÅ©ng nÃ¢ng thÆ° má»¥c lÃªn danh sÃ¡ch.

	TÃ¹y chá»n:
		-c	gá»™t Ä‘á»‘ng thÆ° má»¥c báº±ng cÃ¡ch xoÃ¡ má»i pháº§n tá»
		â‚«l	Ä‘á»«ng in a phiÃªn báº£n thÆ° má»¥c cÃ³ dáº¥u ngÃ£
			(tÆ°Æ¡ng Ä‘á»‘i so vá»›i thÆ° má»¥c chÃnh cá»§a ngÆ°á»i dÃ¹ng)
		-p	in ra Ä‘á»‘ng thÆ° má»¥c, má»—i dÃ²ng má»™t má»¥c
		-v	in ra Ä‘á»‘ng thÆ° má»¥c, má»—i dÃ²ng má»™t má»¥c,
			vá»›i tiá»n tá»‘ lÃ  vá»‹ trÃ trong Ä‘á»‘ng

	Äá»‘i sá»‘ :
		+N	hiá»ƒn thá»‹ má»¥c thá»© N báº¯t Ä‘áº§u tá»« bÃªn trÃ¡i danh sÃ¡ch
			Ä‘Æ°á»£c hiá»ƒn thá»‹ báº±ng Â« dirs Â»
			khi Ä‘Æ°á»£c gá»i mÃ  khÃ´ng Ä‘Æ°a ra tÃ¹y chá»n,
			báº¯t Ä‘áº§u tá»« sá»‘ khÃ´ng.

		-N	hiá»ƒn thá»‹ má»¥c thá»© N báº¯t Ä‘áº§u tá»« bÃªn pháº£i danh sÃ¡ch
			Ä‘Æ°á»£c hiá»ƒn thá»‹ báº±ng Â« dirs Â»
			khi Ä‘Æ°á»£c gá»i mÃ  khÃ´ng Ä‘Æ°a ra tÃ¹y chá»n,
			báº¯t Ä‘áº§u tá»« sá»‘ khÃ´ng.

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i thÃ nh cÃ´ng náº¿u khÃ´ng Ä‘Æ°a ra tÃ¹y chá»n sai hay gáº·p lá»—i.Hiá»ƒn thá»‹ thÃ´ng tin vá» cÃ¡c cÃ¢u lá»‡nh dá»±ng sáºµn.

	Hiá»ƒn thá»‹ báº£n tÃ³m táº¯t ngáº¯n vá» cÃ¡c cÃ¢u lá»‡nh dá»±ng sáºµn.
	Náº¿u cÅ©ng ghi rÃµ MáºªU thÃ¬ in ra trá»£ giÃºp chi tiáº¿t
	vá» táº¥t cáº£ cÃ¡c cÃ¢u lá»‡nh tÆ°Æ¡ng á»©ng vá»›i máº«u Ä‘Ã³ ;
	khÃ´ng thÃ¬ in ra danh sÃ¡ch cÃ¡c chá»§ Ä‘á» trá»£ giÃºp.


TÃ¹y chá»n:
		-d	xuáº¥t mÃ´ táº£ ngáº¯n vá» má»—i chá»§ Ä‘á»
		-m	hiá»ƒn thá»‹ cÃ¡ch sá» dá»¥ng theo Ä‘á»‹nh dáº¡ng
			kiá»ƒu trang hÆ°á»›ng dáº«n (man)
		-s	xuáº¥t chá»‰ má»™t báº£n tÃ³m táº¯t ngáº¯n vá» cÃ¡ch sá» dá»¥ng
			cho má»—i chá»§ Ä‘á» tÆ°Æ¡ng á»©ng vá»›i MáºªU

	Äá»‘i sá»‘ :
		MáºªU	máº«u ghi rÃµ má»™t chá»§ Ä‘á» trá»£ giÃºp

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i thÃ nh cÃ´ng náº¿u tÃ¬m Ä‘Æ°á»£c MáºªU vÃ  khÃ´ng Ä‘Æ°a ra tÃ¹y chá»n sai.Hiá»ƒn thá»‹ thÃ´ng tin vá» kiá»ƒu cÃ¢u lá»‡nh.

	Äá»‘i vá»›i má»—i TÃŠN, ngá»¥ Ã½ nÃ³ sáº½ Ä‘Æ°á»£c giáº£i thÃch nhÆ° tháº¿ nÃ o
		náº¿u nÃ³ Ä‘Æ°á»£c dÃ¹ng dÆ°á»›i dáº¡ng má»™t tÃªn cÃ¢u lá»‡nh.

	TÃ¹y chá»n:
		-a	hiá»ƒn thá»‹ má»i vá»‹ trÃ chá»©a táºp tin thá»±c thi Ä‘Æ°á»£c cÃ³ TÃŠN;
			khÃ´ng Ä‘áº·t tÃ¹y chá»n Â« -p Â» thÃ¬ cÅ©ng bao gá»“m
			cÃ¡c bÃ danh, dá»±ng sáºµn vÃ  chá»©c nÄƒng.
		-f	thu há»“i tÃnh nÄƒng dÃ² tÃ¬m chá»©c nÄƒng trÃ¬nh bao
		-P	Ã©p buá»™c tÃ¬m kiáº¿m ÄÆ¯á»œNG_DáºªN Ä‘á»‘i vá»›i má»—i TÃŠN,
			tháºm chÃ náº¿u nÃ³ lÃ  bÃ danh, dá»±ng sáºµn hay chá»©c nÄƒng,
			vÃ  tráº£ láº¡i tÃªn cá»§a táºp tin trÃªn Ä‘Ä©a mÃ  sáº½ Ä‘Æ°á»£c thá»±c thi
		-p	tráº£ láº¡i hoáº·c tÃªn cá»§a táºp tin trÃªn Ä‘Ä©a mÃ  sáº½ Ä‘Æ°á»£c thá»±c thi,
			hoáº·c khÃ´ng tráº£ láº¡i gÃ¬ náº¿u cÃ¢u lá»‡nh Â« type -t TÃŠN Â»
			sáº½ khÃ´ng tráº£ láº¡i Â« file Â» (táºp tin).
		-t	xuáº¥t má»™t tá»« riÃªng láº» mÃ  má»™t cá»§a:
			â€¢ alias	bÃ danh
			â€¢ keyword	tá»« dÃ nh riÃªng cá»§a trÃ¬nh bao
			â€¢ function	chá»©c nÄƒng cá»§a trÃ¬nh bao
			â€¢ builtin	dá»±ng sáºµn cá»§a trÃ¬nh bao
			â€¢ file	táºp tin trÃªn Ä‘Ä©a
			â€¢ 		(khÃ´ng gÃ¬) khÃ´ng tÃ¬m tháº¥y

	Äá»‘i sá»‘ :
	TÃŠN	tÃªn cÃ¢u lá»‡nh cáº§n giáº£i thÃch.

	TrÃ¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i thÃ nh cÃ´ng náº¿u tÃ¬m tháº¥y táº¥t cáº£ cÃ¡c TÃŠN; khÃ´ng thÃ¬ bá»‹ lá»—i.Hiá»ƒn thá»‹ hoáº·c thá»±c thi cÃ¡c cÃ¢u lá»‡nh tá»« danh sÃ¡ch lÆ°á»£c sá».

	fc Ä‘Æ°á»£c dÃ¹ng Ä‘á»ƒ liá»‡t kÃª hoáº·c chá»‰nh sá»a vÃ  thá»±c thi láº¡i
	cÃ¢u lá»‡nh tá»« danh sÃ¡ch lÆ°á»£c sá».
	Äáº¦U vÃ  CUá»I cÃ³ thá»ƒ lÃ  sá»‘ mÃ  xÃ¡c Ä‘á»‹nh pháº¡m vi,
hoáº·c Äáº¦U cÃ³ thá»ƒ lÃ  má»™t chuá»—i Ä‘áº¡i diá»‡n cÃ¢u lá»‡nh
	vá»«a cháº¡y nháº¥t mÃ  báº¯t Ä‘áº§u vá»›i chuá»—i Ä‘Ã³.
	TÃ¹y chá»n:
		-e ENAME	chá»n trÃ¬nh soáº¡n tháº£o nÃ o cáº§n dÃ¹ng;
			máº·c Ä‘á»‹nh lÃ  FCEDIT, sau Ä‘Ã³ EDITOR, sau Ä‘Ã³ vi
		-l	liá»‡t kÃª cÃ¡c dÃ²ng thay vÃ o chá»‰nh sá»a
		-n	liá»‡t kÃª mÃ  khÃ´ng in ra sá»‘ thá»© tá»± dÃ²ng
		-r	Ä‘áº£o ngÆ°á»£c thá»© tá»± cÃ¡c dÃ²ng (má»›i nháº¥t trÆ°á»›c)

	TÃ¹y theo Ä‘á»‹nh dáº¡ng Â« fc -s [máº«u=láº§n_láºp_láº¡i ...] [lá»‡nh] Â»,
	cÃ¢u Lá»†NH Ä‘Æ°á»£c cháº¡y láº¡i sau khi thay tháº¿ CÅ¨ báº±ng Má»šI.

	CÅ©ng cÃ³ thá»ƒ sá» dá»¥ng bÃ danh cÃ³ Ãch Â« r='fc -s' Â»,
	vÃ¬ tháº¿ viá»‡c gÃµ Â« r cc Â» sáº½ cháº¡y cÃ¢u lá»‡nh cuá»‘i cÃ¹ng
	mÃ  báº¯t Ä‘áº§u vá»›i Â« cc Â», vÃ  viá»‡c gÃµ Â« r Â»
	sáº½ Ä‘Æ¡n giáº£n cháº¡y láº¡i cÃ¢u lá»‡nh cuá»‘i cÃ¹ng.

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i thÃ nh cÃ´ng hay tráº¡ng thÃ¡i cá»§a cÃ¢u lá»‡nh Ä‘Æ°á»£c thá»±c thi;
		gáº·p lá»—i thÃ¬ khÃ¡c sá»‘ khÃ´ng.Hiá»ƒn thá»‹ hoáº·c thao tÃ¡c danh sÃ¡ch lÆ°á»£d sá».

	Hiá»ƒn thá»‹ danh sÃ¡ch lÆ°á»£c sá» vá»›i cÃ¡c sá»‘ thá»© tá»± dÃ²ng,
	cÅ©ng Ä‘áº·t dáº¥u sao Â« * Â» vÃ o trÆ°á»›c má»—i má»¥c nháºp bá»‹ sá»a Ä‘á»•i.
	Äá»‘i sá»‘ N thÃ¬ liá»‡t kÃª chá»‰ N má»¥c nháºp cuá»‘i cÃ¹ng.

	TÃ¹y chá»n:
		-c	xoÃ¡ sáº¡ch danh sÃ¡ch lÆ°á»£c sá» báº±ng cÃ¡ch xoÃ¡ má»i má»¥c nháºp
		-d hiá»‡u	xoÃ¡ má»¥c nháºp lÆ°á»£c sá» á»Ÿ hiá»‡u nÃ y

		-a	phá»¥ thÃªm vÃ o táºp tin lÆ° á»£c sá» cÃ¡c dÃ²ng lÆ°á»£c sá» tá»« phiÃªn cháº¡y nÃ y
		-n	Ä‘á»c má»i dÃ²ng lÆ°á»£c sá» chÆ°a Ä‘á»c tá»« táºp tin lÆ°á»£c sá»
		-r	Ä‘á»c tÆ° lÆ°á»£c sá» vÃ  phá»¥ thÃªm ná»™i dung vÃ o lÆ°á»£c sá»
		-w	ghi lÆ°á»£c sá» hiá»‡n thá»i vÃ o táºp tin lÆ°á»£c sá»
			cÅ©ng phá»¥ thÃªm vÃ o danh sÃ¡ch lÆ°á»£c sá»

		-p	má»Ÿ rá»™ng lÆ°á»£c sá» vá»›i má»—i Äá»I_Sá», vÃ  hiá»ƒn thá»‹ káº¿t quáº£
			mÃ  khÃ´ng ghi nhá»› nÃ³ vÃ o danh sÃ¡ch lÆ°á»£c sá»
		-s	phá»¥ thÃªm cÃ¡c Äá»I_Sá» vÃ o danh sÃ¡ch lÆ°á»£c sá»
			dÆ°á»›i dáº¡ng má»™t má»¥c nháºp riÃªng láº»

	ÄÆ°a ra TÃŠN_Táº¬P_TIN thÃ¬ nÃ³ Ä‘Æ°á»£c dÃ¹ng lÃ m táºp tin lÆ°á»£c sá».
	Náº¿u khÃ´ng, vÃ  náº¿u $HISTFILE cÃ³ giÃ¡ trá»‹, thÃ¬ nÃ³ Ä‘Æ°á»£c dÃ¹ng;
	náº¿u $HISTFILE khÃ´ng cÃ³ giÃ¡ trá»‹ thÃ¬ dÃ¹ng Â« ~/.bash_history Â».

	Náº¿u biáº¿n $HISTTIMEFORMAT Ä‘Ã£ Ä‘Æ°á»£c Ä‘áº·t vÃ  cÃ³ giÃ¡ trá»‹,
	thÃ¬ giÃ¡ trá»‹ Ä‘Ã³ Ä‘Æ°á»£c dÃ¹ng lÃ m chuá»—i Ä‘á»‹nh dáº¡ng
	cho strftime(3) in ra nhÃ£n thá»i gian tÆ°Æ¡ng á»©ng
	vá»›i má»—i má»¥c nháºp lÆ°á»£c sá» Ä‘Æ°á»£c hiá»ƒn thá»‹.
	KhÃ´ng thÃ¬ khÃ´ng in ra nhÃ£n thá»i gian.

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i thÃ nh cÃ´ng náº¿u khÃ´ng gáº·p tÃ¹y chá»n sai hay gáº·p lá»—i.Hiá»ƒn thá»‹ hoáº·c Ä‘áº·t máº·t náº¡ cháº¿ Ä‘á»™ táºp tin.

	Äáº·t máº·t náº¡ (bá»™ lá»c) táº¡o táºp tin cá»§a ngÆ°á»i dÃ¹ng thÃ nh CHáº¾_Äá»˜.
		KhÃ´ng Ä‘Æ°a ra CHáº¾_Äá»˜ thÃ¬ in ra giÃ¡ trá»‹ hiá»‡n thá»i cá»§a máº·t náº¡.

	Náº¿u CHáº¾_Äá»˜ báº¯t Ä‘áº§u vá»›i má»™t chá»¯ sá»‘, nÃ³ Ä‘Æ°á»£c Ä‘á»c lÃ  má»™t sá»‘ bÃ¡t phÃ¢n;
		khÃ´ng thÃ¬ nÃ³ lÃ  má»™t chuá»—i cháº¿ Ä‘á»™ tÆ°á»£ng trÆ°ng
		giá»‘ng nhÆ° chuá»—i Ä‘Æ°á»£c chmod(1) cháº¥p nháºn.

	TÃ¹y chá»n:
		-p	khÃ´ng Ä‘Æ°a ra CHáº¾_Äá»˜ thÃ¬ xuáº¥t theo má»™t Ä‘á»‹nh dáº¡ng
			cÃ³ thá»ƒ Ä‘Æ°á»£c dÃ¹ng láº¡i lÃ m dá»¯ liá»‡u nháºp vÃ o
		-S	lÃ m cho káº¿t xuáº¥t cÅ©ng tÆ°á»£ng trÆ°ng,
			khÃ´ng thÃ¬ xuáº¥t má»™t sá»‘ bÃ¡t phÃ¢n

	TrÃ¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i thÃ nh cÃ´ng náº¿u khÃ´ng cÃ³ CHáº¾_Äá»˜ sai hay tÃ¹y chá»n sai.Hiá»ƒn thá»‹ cÃ¡c viá»‡c Ä‘iá»n ná»‘t cÃ³ thá»ƒ lÃ m, phá»¥ thuá»™c vÃ o nhá»¯ng tÃ¹y chá»n.

	Dá»± Ä‘á»‹nh dÃ¹ng tá»« bÃªn trong má»™t chá»©c nÄƒng trÃ¬nh bao
	mÃ  táº¡o cÃ¡c viá»‡c Ä‘iá»n ná»‘t cÃ³ thá»ƒ lÃ m.
	Náº¿u Ä‘Æ°a ra Ä‘á»‘i sá»‘ Tá»ª váº«n tÃ¹y chá»n,
	thÃ¬ táº¡o cÃ¡c káº¿t quáº£ tÆ°Æ¡ng á»©ng vá»›i Tá»ª.

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i thÃ nh cÃ´ng náº¿u khÃ´ng Ä‘Æ°a ra tÃ¹y chá»n sai hay gáº·p lá»—i.Hiá»ƒn thá»‹ thá»i lÆ°á»£ng cháº¡y tiáº¿n trÃ¬nh.

	In ra thá»i lÆ°á»£ng cháº¡y trÃ¬nh bao (vÃ  cÃ¡c tiáº¿n trÃ¬nh con)
		Ä‘á»‘i vá»›i há»‡ thá»‘ng vÃ  má»—i ngÆ°á»i dÃ¹ng.

	Tráº¡ng thÃ¡i thoÃ¡t:
	LÃºc nÃ o cÅ©ng thÃ nh cÃ´ng.Hiá»ƒn thá»‹ tráº¡ng thÃ¡i cá»§a cÃ´ng viá»‡c.

	Liá»‡t kÃª cÃ¡c cÃ´ng viá»‡c Ä‘ang cháº¡y.
	Äáº¶C_Táº¢_CÃ”NG_VIá»†C háº¡n cháº¿ káº¿t xuáº¥t thÃ nh cÃ´ng viá»‡c Ä‘Ã³.
	KhÃ´ng Ä‘Æ°a ra tÃ¹y chá»n thÃ¬ hiá»ƒn thá»‹ tráº¡ng thÃ¡i
	cá»§a má»i cÃ´ng viá»‡c Ä‘ang cháº¡y.

	TÃ¹y chá»n:
		-l	liá»‡t kÃª cÃ¡c mÃ£ sá»‘ tiáº¿n trÃ¬nh, thÃªm vÃ o thÃ´ng tin bÃ¬nh thÆ°á»ng
		-n	liá»‡t kÃª chá»‰ nhá»¯ng tiáº¿n trÃ¬nh Ä‘Ã£ thay Ä‘á»•i tráº¡ng thÃ¡i
			ká»ƒ tá»« láº§n thÃ´ng bÃ¡o cuá»‘i cÃ¹ng
		-s	háº¡n cháº¿ káº¿t xuáº¥t thÃ nh nhá»¯ng cÃ´ng viá»‡c bá»‹ dá»«ng cháº¡y

	ÄÆ°a ra Â« -x Â» thÃ¬ cÃ¢u Lá»†NH Ä‘Æ°á»£c cháº¡y sau khi táº¥t cáº£ cÃ¡c Ä‘áº·c táº£ cÃ´ng viá»‡c
	mÃ  xuáº¥t hiá»‡n trong cÃ¡c Äá»I_Sá» Ä‘Ã£ Ä‘Æ°á»£c thay tháº¿ báº±ng mÃ£ sá»‘ tiáº¿n trÃ¬nh
	cá»§a trÃ¬nh dáº«n Ä‘áº§u nhÃ³m tiáº¿n trÃ¬nh cá»§a cÃ´ng viá»‡c Ä‘Ã³.

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i thÃ nh cÃ´ng náº¿u khÃ´ng gáº·p tÃ¹y chá»n sai hay gáº·p lá»—i.
	ÄÆ°a ra Â« -x Â» thÃ¬ tráº£ láº¡i tráº¡ng thÃ¡i thoÃ¡t cá»§a cÃ¢u Lá»†NH.Hiá»ƒn thá»‹ danh sÃ¡ch cÃ¡c thÆ° má»¥c Ä‘Æ°á»£c nhá»› hiá»‡n thá»i.
	Lá»‡nh Â« pushd Â» thÃªm thÆ° má»¥c vÃ o danh sÃ¡ch nÃ y;
Â« popd Â» nÃ¢ng thÆ° má»¥c lÃªn danh sÃ¡ch.

	TÃ¹y chá»n:
		-c	gá»™t Ä‘á»‘ng thÆ° má»¥c báº±ng cÃ¡ch xoÃ¡ má»i pháº§n tá»
		-l	Ä‘á»«ng in ra phiÃªn báº£n thÆ° má»¥c cÃ³ dáº¥u ngÃ£ náº±m trÆ°á»›c
			mÃ  tÆ°Æ¡ng á»©ng vá»›i thÆ° má»¥c chÃnh cá»§a ngÆ°á»i dÃ¹ng
		-p	in ra Ä‘á»‘ng thÆ° má»¥c má»—i dÃ²ng má»™t má»¥c
		-v	in ra Ä‘á»‘ng thÆ° má»¥c má»—i dÃ²ng má»™t má»¥c
			cÃ³ vá»‹ trÃ Ä‘á»‘ng náº±m trÆ°á»›c

	Äá»‘i sá»‘ :
		+N	hiá»ƒn thá»‹ má»¥c thá»© N Ä‘áº¿m tá»« bÃªn trÃ¡i danh sÃ¡ch
			hiá»ƒn thá»‹ theo thÆ° má»¥c khi khÃ´ng Ä‘Æ°a ra tÃ¹y chá»n,
			báº¯t Ä‘áº§u tá»« sá»‘ khÃ´ng.

		-N	hiá»ƒn thá»‹ má»¥c thá»© N Ä‘áº¿m tá»« bÃªn pháº£i danh sÃ¡ch
			hiá»ƒn thá»‹ theo thÆ° má»¥c khi khÃ´ng Ä‘Æ°a ra tÃ¹y chá»n,
			báº¯t Ä‘áº§u tá»« sá»‘ khÃ´ng.HoÃ n táº¥tHoÃ n táº¥t(%d)CÃ¢u lá»‡nh EMTBáºt/táº¯t dá»±ng sáºµn trÃ¬nh bao.
	Báºt vÃ  táº¯t cÃ¡c dá»±ng sáºµn trÃ¬nh bao.	Chá»©c nÄƒng táº¯t thÃ¬ cho phÃ©p báº¡n thá»±c thi má»™t cÃ¢u lá»‡nh Ä‘Ä©a
	mÃ  cÃ¹ng tÃªn vá»›i má»™t dá»±ng sáºµn trÃ¬nh bao,
	khÃ´ng cáº§n dÃ¹ng tÃªn Ä‘Æ°á»ng dáº«n Ä‘áº§y Ä‘á»§.

	TÃ¹y chá»n:
		-a	in ra má»™t danh sÃ¡ch cÃ¡c dá»±ng sáº³n, cÅ©ng hiá»ƒn thá»‹ tráº¡ng thÃ¡i báºt/táº¯t
		-b	táº¯t má»—i TÃŠN hoáº·c hiá»ƒn thá»‹ danh sÃ¡ch cÃ¡c dá»±ng sáºµn bá»‹ táº¯t
		-p	in ra danh sÃ¡ch cÃ¡c dá»±ng sáºµn theo má»™t Ä‘á»‹nh dáº¡ng cÃ³ thá»ƒ dÃ¹ng láº¡i Ä‘Æ°á»£c
		-s	in ra chá»‰ tÃªn má»—i dá»±ng sáºµn Posix Â« Ä‘áº·c biá»‡t Â»

	TÃ¹y chá»n Ä‘iá»u khiá»ƒn chá»©c nÄƒng náº¡p Ä‘á»™ng:
		-f	náº¡p dá»±ng sáºµn TÃŠN tá»« Ä‘iá»u khiá»ƒn dÃ¹ng chung TÃŠN_Táº¬P_TIN
		-d	gá»¡ bá» má»™t dá»±ng sáºµn Ä‘Æ°á»£c náº¡p dÃ¹ng Â« -f Â»

	KhÃ´ng cÃ³ tÃ¹y chá»n thÃ¬ má»—i TÃŠN Ä‘Æ°á»£c báºt láº¡i.

	Äá»ƒ sá» dá»¥ng Â« test Â» (hÃ m thá») náº±m trÃªn Ä‘Æ°á»ng dáº«n máº·c Ä‘á»‹nh $PATH
	thay cho phiÃªn báº£n cá»§a dá»±ng sáºµn trÃ¬nh bao,
	hÃ£y gÃµ chuá»—i Â« enable -n test Â».

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i thÃ nh cÃ´ng náº¿u TÃŠN lÃ  má»™t dá»±ng sáºµn trÃ¬nh bao, vÃ  khÃ´ng gáº·p lá»—i.Äá»‹nh giÃ¡ biá»ƒut thá»©c sá»‘ há»c.

	BIá»‚U_THá»¨C Ä‘Æ°á»£c tÃnh tÃ¹y theo cÃ¡c quy táº¯c vá» Ä‘á»‹nh giÃ¡ sá»‘ há»c.
	TÆ°Æ¡ng Ä‘Æ°Æ¡ng vá»›i Â« let BIá»‚U_THá»¨C Â».

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i 1 náº¿u BIá»‚U_THá»¨C tÃnh lÃ  0; khÃ´ng thÃ¬ tráº£ láº¡i 0.Äá»‹nh giÃ¡ biá»ƒu thá»©c Ä‘iá»u kiá»‡n.

	ÄÃ¢y lÃ  má»™t tá»« Ä‘á»“ng nghÄ©a vá»›i dá»±ng sáºµn Â« test Â»,
	nhÆ°ng Ä‘á»‘i sá»‘ cuá»‘i cÃ¹ng pháº£i lÃ  má»™t Â« ] Â» nghÄ©a chá»¯,
	Ä‘á»• tÆ°Æ¡ng á»©ng vá»›i Â« [ Â» má»Ÿ.Thá»±c thi má»™t cÃ¢u lá»‡nh Ä‘Æ¡n giáº£n, hoáº·c hiá»ƒn thá»‹ thÃ´ng tin vá» cÃ¡c cÃ¢u lá»‡nh.

Cháº¡y Lá»†NH vá»›i cÃ¡c Äá»I_Sá» thu há»“i chá»©c nÄƒng dÃ² tÃ¬m chá»©c nÄƒng trÃ¬nh bao,
hoáº¡c hiá»ƒn thá»‹ thÃ´ng tin vá» cÃ¡c cÃ¢u Lá»†NH Ä‘Æ°á»£c ghi rÃµ.
CÃ³ thá»ƒ Ä‘Æ°á»£c dÃ¹ng Ä‘á»ƒ gá»i cÃ¢u lá»‡nh trÃªn Ä‘Ä©a khi Ä‘Ã£ cÃ³ má»™t chá»©c nÄƒng cÃ¹ng tÃªn.

TÃ¹y chá»n:
	-p	dÃ¹ng má»™t giÃ¡ trá»‹ máº·c Ä‘á»‹nh cho ÄÆ¯á»œNG_DáºªN
		mÃ  cháº¯c cháº¯n sáº½ tÃ¬m má»i tiá»‡n Ãch tiÃªu chuáº©n
	-v	in ra mÃ´ táº£ vá» cÃ¢u Lá»†NH mÃ  tÆ°Æ¡ng tá»± vá»›i dá»±ng sáºµn Â« type Â» (kiá»ƒu)
	-V	in ra mÃ´ táº£ chi tiáº¿t hÆ¡n vá» má»—i cÃ¢u Lá»†NH

Tráº¡ng thÃ¡i thoÃ¡t:
Tráº£ láº¡i tráº¡ng thÃ¡i thoÃ¡t cá»§a cÃ¢u Lá»†NH, hoáº·c bá»‹ lá»—i náº¿u khÃ´ng tÃ¬m tháº¥y cÃ¢u Lá»†NH.Thá»±c thi cÃ¡c Ä‘á»‘i sá»‘ dÆ°á»›i dáº¡ng má»™t cÃ¢u lá»‡nh trÃ¬nh bao.

	Phá»‘i há»£p cÃ¡c Äá»I_Sá» thÃ nh má»™t chuá»—i riÃªng láº»,
	dÃ¹ng káº¿t quáº£ lÃ m dá»¯ liá»‡u nháºp vÃ o trÃ¬nh bao,
	vÃ  thá»±c thi cÃ¡c cÃ¢u lá»‡nh káº¿t quáº£.

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i tráº¡ng thÃ¡i thoÃ¡t cá»§a cÃ¢u lá»‡nh,
	hay thÃ nh cÃ´ng náº¿u cÃ¢u lá»‡nh vÃ´ giÃ¡ trá»‹.Thá»±c thi cÃ¢u lá»‡nh miá»…n lÃ  má»™t phÃ©p thá» khÃ´ng thÃ nh cÃ´ng.

	Má»Ÿ rá»™ng vÃ  thá»±c thi cÃ¡c cÃ¢u Lá»†NH miá»…n lÃ  cÃ¢u lá»‡nh cuá»‘i cÃ¹ng
	trong cÃ¡c cÃ¢u Lá»†NH Â« until Â» (Ä‘áº¿n khi) cÃ³ tráº¡ng thÃ¡i thoÃ¡t
	khÃ¡c sá»‘ khÃ´ng.

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i tráº¡ng thÃ¡i cá»§a cÃ¢u lá»‡nh cuá»‘i cÃ¹ng Ä‘Æ°á»£c cháº¡y.Thá»±c thi cÃ¢u lá»‡nh miá»…n lÃ  má»™t phÃ©p thá» thÃ nh cÃ´ng.

	Má»Ÿ rá»™ng vÃ  thá»±c thi cÃ¡c cÃ¢u Lá»†NH miá»…n lÃ  cÃ¢u lá»‡nh cuá»‘i cÃ¹ng
	trong nhá»¯ng cÃ¢u Lá»†NH Â« while Â» (trong khi)
	cÃ³ tráº¡ng thÃ¡i thoÃ¡t lÃ  sá»‘ khÃ´ng.

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i tráº¡ng thÃ¡i cá»§a cÃ¢u lá»‡nh cuá»‘i cÃ¹ng Ä‘Æ°á»£c cháº¡y.Thá»±c thi cÃ¢u lá»‡nh dá»±a vÃ o Ä‘iá»u kiá»‡n.

	Danh sÃ¡ch Â« if Lá»†NH Â» Ä‘Æ°á»£c thá»±c thi.
	Náº¿u tráº¡ng thÃ¡i thoÃ¡t cá»§a nÃ³ lÃ  sá»‘ khÃ´ng,
	thÃ¬ danh sÃ¡ch Â« then Lá»†NH Â» Ä‘Æ°á»£c thá»±c thi.
	KhÃ´ng thÃ¬ má»—i danh sÃ¡ch Â« elif Lá»†NH Â» Ä‘Æ°á»£c thá»±c thi láº§n lÆ°á»£t,
	vÃ  náº¿u tráº¡ng thÃ¡i thoÃ¡t cá»§a nÃ³ lÃ  sá»‘ khÃ´ng,
	thÃ¬ danh sÃ¡ch Â« then Lá»†NH Â» tÆ°Æ¡ng á»©ng Ä‘Æ°á»£c thá»±c thi
	vÃ  cÃ¢u lá»‡nh Â« náº¿u Â» (if) sáº½ cháº¡y xong.
	KhÃ´ng thÃ¬ danh sÃ¡ch Â« else Lá»†NH Â» Ä‘Æ°á»£c thá»±c thi, náº¿u cÃ³.
	Tráº¡ng thÃ¡i thoÃ¡t cá»§a toÃ n bá»™ táº¡o dá»±ng
	lÃ  tráº¡ng thÃ¡i cá»§a cÃ¢u lá»‡nh cuá»‘i cÃ¹ng Ä‘Æ°á»£c cháº¡y,
	hoáº·c sá»‘ khÃ´ng náº¿u khÃ´ng cÃ³ Ä‘iá»u kiá»‡n cÃ³ káº¿t quáº£ lÃ  ÄÃºng.

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i tráº¡ng thÃ¡i cá»§a cÃ¢u lá»‡nh cuá»‘i cÃ¹ng Ä‘Æ°á»£c cháº¡y.Thá»©c thi cÃ¢u lá»‡nh dá»±a vÃ o khá»›p máº«u.

	Thá»±c thi cÃ¡c cÃ¢u Lá»†NH má»™t cÃ¡ch chá»n lá»c,
	dá»±a vÃ o Tá»ª tÆ°Æ¡ng á»©ng vá»›i MáºªU.
	Nhiá»u máº«u Ä‘á»‹nh giá»›i báº±ng Â« | Â».

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i tráº¡ng thÃ¡i cá»§a cÃ¢u lá»‡nh cuá»‘i cÃ¹ng Ä‘Æ°á»£c cháº¡y.Thá»±c thi cÃ¢u lá»‡nh cho má»—i bá»™ pháºn trong má»™t danh sÃ¡ch.

	VÃ²ng láº·p Â« for Â» (cho) thÃ¬ thá»±c thi cÃ¢u lá»‡nh
	cho má»—i bá»™ pháºn trong má»™t danh sÃ¡ch cÃ¡c má»¥c.
	KhÃ´ng Ä‘Æ°a ra Â« in CÃC_Tá»ª ... Â» thÃ¬ giáº£ sá» Â« in "$@" Â».
	Äá»‘i vá»›i má»—i pháº§n tá» trong CÃC_Tá»ª,
	TÃŠN Ä‘Æ°á»£c Ä‘áº·t thÃ nh pháº§n tá» Ä‘Ã³,
	vÃ  cÃ¡c cÃ¢u Lá»†NH Ä‘Æ°á»£c thá»±c thi.

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i tráº¡ng thÃ¡i cá»§a cÃ¢u lá»‡nh cuá»‘i cÃ¹ng Ä‘Æ°á»£c cháº¡y.Thá»±c thi cÃ¡c cÃ¢u lá»‡nh tá»« má»™t táºp tin trong trÃ¬nh bao Ä‘ang cháº¡y.

	Äá»c vÃ  thá»±c thi cÃ¡c cÃ¢u lá»‡nh tá»« TÃŠN_Táº¬P_TIN
	trong trÃ¬nh bao Ä‘ang cháº¡y.
	Nhá»¯ng má»¥c nháºp trong $PATH Ä‘Æ°á»£c dÃ¹ng
	Ä‘á»ƒ tÃ¬m thÆ° má»¥c chá»©a tÃªn táºp tin nÃ y.
	ÄÆ°a ra Ä‘á»‘i sá»‘ thÃ¬ má»—i Ä‘á»‘i sá»‘ trá»Ÿ thÃ nh tham sá»‘ thuá»™c vá»‹ trÃ
	khi TÃŠN_Táº¬P_TIN Ä‘Æ°á»£c thá»±c thi.

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i tráº¡ng thÃ¡i cá»§a cÃ¢u lá»‡nh cuá»‘i cÃ¹ng Ä‘Æ°á»£c thá»±c thi trong TÃŠN_Táº¬P_TIN;
	khÃ´ng thÃ nh cÃ´ng náº¿u khÃ´ng thá»ƒ Ä‘á»c TÃŠN_Táº¬P_TIN.Thá»±c thi cÃ¢u lá»‡nh Ä‘iá»u kiá»‡n.

Tráº£ vá» tráº¡ng thÃ¡i 0 hoáº·c 1, phá»¥ thuá»™c vÃ o phÃ©p tÃnh
	biá»ƒu thá»©c Ä‘iá»u kiá»‡n BIá»‚U_THá»¨C.
Biá»ƒu thá»©c chá»©a cÃ¹ng nhá»¯ng nguyÃªn sÆ¡ Ä‘Æ°á»£c dÃ¹ng bá»Ÿi dá»±ng sáºµn Â« test Â»,
	vÃ  cÃ³ thá»ƒ Ä‘Æ°á»£c tá»• há»£p dÃ¹ng cÃ¡c toÃ¡n tá» theo Ä‘Ã¢y:
    
    	( BIá»‚U_THá»¨C )	Tráº£ vá» giÃ¡ trá»‹ cá»§a BIá»‚U_THá»¨C
    	! BIá»‚U_THá»¨C	ÄÃºng náº¿u BIá»‚U_THá»¨C lÃ  khÃ´ng Ä‘Ãºng; khÃ´ng thÃ¬ sai
    	B_THá»¨C1 && B_THá»¨C2
	ÄÃºng náº¿u cáº£ hai B_THá»¨C1 vÃ  B_THá»¨C2 Ä‘á»u lÃ  Ä‘Ãºng; khÃ´ng thÃ¬ sai
    	B_THá»¨C1 || B_THá»¨C2
	ÄÃºng náº¿u má»™t cá»§a B_THá»¨C1 vÃ  B_THá»¨C2 lÃ  Ä‘Ãºng; khÃ´ng thÃ¬ sai
    
Khi dÃ¹ng toÃ¡n tá»« Â« == Â» vÃ  Â« != Â», chuá»—i bÃªn pháº£i toÃ¡n tá» Ä‘Æ°á»£c dÃ¹ng lÃ m máº«u,
	vÃ  thá»±c hiá»‡n chá»©c nÄƒng khá»›p máº«u.
ToÃ¡n tá» Â« && Â» vÃ  Â« || Â» khÃ´ng tÃnh B_THá»¨C2 náº¿u B_THá»¨C1 lÃ  Ä‘á»§
	Ä‘á»ƒ tÃnh giÃ¡ trá»‹ cá»§a biá»ƒu thá»©c.

	Tráº¡ng thÃ¡i thoÃ¡t:
	0 hay 1 phá»¥ thuá»™c vÃ o giÃ¡ trá»‹ cá»§a BIá»‚U_THá»¨C.Cháº¡y dá»±ng sáºµn trÃ¬nh bao.

	Cháº¡y SHELL-BUILTIN (dá»±ng sáºµn trÃ¬nh bao) vá»›i cÃ¡c Äá»I_Sá»
	mÃ  khÃ´ng thá»±c thi chá»©c nÄƒng dÃ² tÃ¬m cÃ¢u lá»‡nh.
	CÃ³ Ãch khi báº¡n muá»‘n thá»±c thi láº¡i má»™t dá»±ng sáºµn trÃ¬nh bao
	dÆ°á»›i dáº¡ng má»™t chá»©c nÄƒng trÃ¬nh bao, nhÆ°ng cÅ©ng
	cáº§n thá»±c thi dá»±ng sáºµn bÃªn trong chá»©c nÄƒng.

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i tráº¡ng thÃ¡i thoÃ¡t cá»§a SHELL-BUILTIN,
	hoáº·c sai náº¿u SHELL-BUILTIN khÃ´ng pháº£i lÃ  má»™t
	dá»±ng sáºµn trÃ¬nh bao.ThoÃ¡t %dThoÃ¡t khá»i má»™t trÃ¬nh bao Ä‘Äƒng nháºp.

	ThoÃ¡t khá»i má»™t trÃ¬nh bao Ä‘Äƒng nháºp, vá»›i tráº¡ng thÃ¡i thoÃ¡t N.
	Tráº£ láº¡i lá»—i náº¿u khÃ´ng Ä‘Æ°á»£c thá»±c thi trong trÃ¬nh bao Ä‘Äƒng nháºp.ThoÃ¡t khá»i vÃ²ng láº·p kiá»ƒu trong, trong khi hay Ä‘áº¿n khi.

	ThoÃ¡t khá»i má»™t vÃ²ng láº·p kiá»ƒu TRONG, TRONG KHI hay Äáº¾N KHI.
	CÃ³ ghi rÃµ N thÃ¬ ngáº¯t N vÃ²ng láº·p bao bá»c.

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº¡ng thÃ¡i thoÃ¡t lÃ  0 náº¿u N khÃ´ng nhá» hÆ¡n hay báº±ng 1.ThoÃ¡t khá»i trÃ¬nh bao.

	ThoÃ¡t khá»i trÃ¬nh bao vá»›i tráº¡ng thÃ¡i N.
	KhÃ´ng Ä‘Æ°a ra N thÃ¬ tráº¡ng thÃ¡i thoÃ¡t
	lÃ  tráº¡ng thÃ¡i cá»§a cÃ¢u lá»‡nh cuá»‘i cÃ¹ng Ä‘Æ°á»£c cháº¡y.Giá»›i háº¡n táºp tinNgoáº¡i lá»‡ cháº¥m Ä‘á»™ngbash cá»§a GNU, phiÃªn báº£n %s (%s)
bash cá»§a GNU, phiÃªn báº£n %s-(%s)
TÃ¹y chá»n GNU dÃ i:
NhÃ³m láº¡i cÃ¡c cÃ¢u lá»‡nh lÃ m cÃ¹ng má»™t Ä‘Æ¡n vá»‹.

	Cháº¡y má»™t táºp há»£p cÃ¡c cÃ¢u lá»‡nh trong cÃ¹ng má»™t nhÃ³m.
	ÄÃ¢y lÃ  má»™t phÆ°Æ¡ng phÃ¡p chuyá»ƒn hÆ°á»›ng
	má»™t táºp há»£p cÃ¢u lá»‡nh hoÃ n toÃ n.

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i tráº¡ng thÃ¡i cá»§a cÃ¢u lá»‡nh cuá»‘i cÃ¹ng Ä‘Æ°á»£c cháº¡y.Dá»¯ liá»‡u nháºp HFT bá»‹ hoÃ£nCÃ³ cháº¿ Ä‘á»™ mÃ n hÃ¬nh HFTKhÃ´ng cÃ³ cháº¿ Ä‘á»™ mÃ n hÃ¬nh HFTÄÃ£ hoÃ n thÃ nh chuá»—i Ã¢m thanh HFTChÆ°a Ä‘áº·t biáº¿n mÃ´i trÆ°á»ng HOME (nhÃ )Treo mÃ¡yKhÃ´ng cÃ³ tÃªn.V/R sáºµn sÃ ngCÃ¢u lá»‡nh khÃ´ng Ä‘Æ°á»£c phÃ©pyÃªu cáº§u thÃ´ng tinGiÃ¡n Ä‘oáº¡nBá»‹ giáº¿tGiáº¥y phÃ©p GPLv2+: Giáº¥y PhÃ©p CÃ´ng Cá»™ng GNU phiÃªn báº£n 2 hay sau <http://gnu.org/licenses/gpl.html>
Giáº¥y phÃ©p GPLv3+: Giáº¥y PhÃ©p CÃ´ng Cá»™ng GNU phiÃªn báº£n 3 hay sau <http://gnu.org/licenses/gpl.html>
ÄÃ¡nh dáº¥u biáº¿n trÃ¬nh bao khÃ´ng thá»ƒ thay Ä‘á»•i Ä‘Æ°á»£c.

	ÄÃ¡nh dáº¥u má»—i TÃŠN lÃ  chá»‰ Ä‘á»c; nhá»¯ng giÃ¡ trá»‹ cá»§a TÃŠN nhÆ° váºy
	thÃ¬ khÃ´ng thay Ä‘á»•i Ä‘Æ°á»£c báº¥t cháº¥p viá»‡c gÃ¡n theo sau.
	ÄÆ°a ra GIÃ_TRá»Š thÃ¬ gÃ¡n GIÃ_TRá»Š trÆ°á»›c khi Ä‘Ã¡nh dáº¥u lÃ  chá»‰ Ä‘á»c.

	TÃ¹y chá»n:
		-a	tham chiáº¿u Ä‘áº¿n biáº¿n kiá»ƒu máº£ng theo sá»‘ mÅ©
		-A	tham chiáº¿u Ä‘áº¿n biáº¿n kiá»ƒu máº£ng káº¿t há»£p
		-f	tham chiáº¿u Ä‘áº¿n chá»©c nÄƒng trÃ¬nh bao
		-p	hiá»ƒn thá»‹ danh sÃ¡ch cÃ¡c biáº¿n vÃ  chá»©c nÄƒng váº«n chá»‰ Ä‘á»c

	Äá»‘i sá»‘ Â« -- Â» thÃ¬ táº¯t chá»©c nÄƒng xá» lÃ½ tÃ¹y chá»n sau ná»¯a.

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i thÃ nh cÃ´ng náº¿u khÃ´ng Ä‘Æ°a ra tÃ¹y chá»n sai hay TÃŠN sai.Sá»a Ä‘á»•i cÃ¡c giá»›i háº¡n tÃ i nguyÃªn trÃ¬nh bao.

	Cung cáº¥p Ä‘iá»u khiá»ƒn vá»›i cÃ¡c tÃ i nguyÃªn sáºµn sÃ ng
	cho trÃ¬nh bao vÃ  cÃ¡c tiáº¿n trÃ¬nh Ä‘Æ°á»£c nÃ³ táº¡o,
	trÃªn há»‡ thá»‘ng cho phÃ©p Ä‘iá»u khiá»ƒn nhÆ° váºy.

	TÃ¹y chá»n:
		-S	dÃ¹ng giá»›i háº¡n tÃ i nguyÃªn Â« soft Â» (má»m)
		-H	dÃ¹ng giá»›i háº¡n tÃ i nguyÃªn Â« hard Â» (cá»©ng)
		-a	thÃ´ng bÃ¡o má»i giá»›i háº¡n hiá»‡n thá»i
		-b	kÃch cá»¡ cá»§a vÃ¹ng Ä‘á»‡m á»• cáº¯m
		-c	kÃch cá»¡ tá»‘i Ä‘a cá»§a táºp tin lÃµi Ä‘Æ°á»£c táº¡o
		-d	kÃch cá»¡ tá»‘i Ä‘a cá»§a tá»«ng Ä‘oáº¡n dá»¯ liá»‡u cá»§a má»™t tiáº¿n trÃ¬nh
		-e	má»©c Æ°u tiÃªn cao nháº¥t khi Ä‘á»‹nh thá»i (Â« nice Â»)
		-f	kÃch cá»¡ tá»‘i Ä‘a cá»§a cá»§a táºp tin Ä‘Æ°á»£c ghi bá»Ÿi trÃ¬nh bao
			vÃ  cÃ¡c tiáº¿n trÃ¬nh con cá»§a nÃ³
		-i	sá»‘ tá»‘i Ä‘a cÃ¡c tÃn hiá»‡u bá»‹ hoÃ£n
		-l	kÃch cá»¡ tá»‘i Ä‘a mÃ  má»™t tiáº¿n trÃ¬nh cÃ³ thá»ƒ khoÃ¡ vÃ o bá»™ nhá»›
		-m	kÃch cá»¡ tá»‘i Ä‘a cá»§a táºp há»£p ná»™i trÃº
		-n	sá»‘ tá»‘i Ä‘a cÃ¡c bá»™ mÃ´ táº£ táºp tin cÃ²n má»Ÿ
		-p	kÃch cá»¡ cá»§a vÃ¹ng Ä‘á»‡m á»‘ng dáº«n
		-q	sá»‘ tá»‘i Ä‘a cÃ¡c byte trong hÃ ng Ä‘á»£i thÃ´ng Ä‘iá»‡p POSIX
		-r	má»©c Æ°u tiÃªn cao nháº¥t khi Ä‘á»‹nh thá»i tháºt
		-s	kÃch cá»¡ tá»‘i Ä‘a cá»§a Ä‘á»‘ng
		-t	thá»i gian CPU lÃ¢u nháº¥t, theo giÃ¢y
		-u	sá»‘ tá»‘i Ä‘a cÃ¡c tiáº¿n trÃ¬nh cá»§a ngÆ°á»i dÃ¹ng
		-v	kÃch cá»¡ cá»§a bá»™ nhá»› áº£o
		sá»‘ tá»‘i Ä‘a cÃ¡c khoÃ¡ táºp tin

	Náº¿u Ä‘Æ°a ra GIá»šI_Háº N thÃ¬ nÃ³ lÃ  giÃ¡ trá»‹ má»›i cá»§a tÃ i nguyÃªn Ä‘Æ°á»£c ghi rÃµ ;
	cÅ©ng cÃ³ ba giÃ¡ trá»‹ GIá»šI_Háº N Ä‘áº·c biá»‡t:
		â€¢ soft	giá»›i háº¡n má»m hiá»‡n thá»i
		â€¢ hard	giá»›i háº¡n cá»©ng hiá»‡n thá»i
		â€¢ unlimited	vÃ´ háº¡n
	KhÃ´ng thÃ¬ in ra giÃ¡ trá»‹ hiá»‡n thá»i cá»§a tÃ i nguyÃªn Ä‘Æ°á»£c ghi rÃµ.
	KhÃ´ng Ä‘Æ°a ra tÃ¹y chá»n thÃ¬ giáº£ sá» Â« -f Â».

	GiÃ¡ trá»‹ Ä‘Æ°á»£c ghi rÃµ theo bÆ°á»›c 1024-byte, trá»« :
		â€¢ -t	theo giÃ¢y
		â€¢ -p	theo bÆ°á»›c 512-byte
		â€¢ -u	sá»‘ cÃ¡c tiáº¿n trÃ¬nh khÃ´ng theo tá»· lá»‡

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i thÃ nh cÃ´ng náº¿u khÃ´ng Ä‘Æ°a ra tÃ¹y chá»n sai hay gáº·p lá»—i.NÃ¢ng cÃ´ng viá»‡c lÃªn trÆ°á»›c.

	NÃ¢ng lÃªn trÆ°á»›c cÃ´ng viá»‡c Ä‘Æ°á»£c Äáº¶C_Táº¢_CÃ”NG_VIá»†C Ä‘áº¡i diá»‡n,
	thÃ¬ lÃ m cho nÃ³ lÃ  cÃ´ng viá»‡c hiá»‡n thá»i.
	KhÃ´ng Ä‘Æ°a ra Äáº¶C_Táº¢_CÃ”NG_VIá»†C
	thÃ¬ dÃ¹ng cÃ´ng viá»‡c hiá»‡n thá»i tÃ¹y theo trÃ¬nh bao.

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº¡ng thÃ¡i cá»§a cÃ¢u lá»‡nh Ä‘Æ°á»£c nÃ¢ng lÃªn trÆ°á»›c;
	gáº·p lá»—i thÃ¬ khÃ´ng thÃ nh cÃ´ng.Gá»i cÃ´ng viá»‡c ra sau.

	Gá»i ra sau cÃ¡c cÃ´ng viá»‡c Ä‘Æ°á»£c má»—i Äáº¶C_Táº¢_CÃ”NG_VIá»†C Ä‘áº¡i diá»‡n,
	nhÆ° lÃ  cÃ´ng viá»‡c Ä‘Æ°á»£c báº¯t Ä‘áº§u vá»›i Â« & Â».
	KhÃ´ng Ä‘Æ°a ra Äáº¶C_Táº¢_CÃ”NG_VIá»†C
	thÃ¬ dÃ¹ng cÃ´ng viá»‡c hiá»‡n thá»i tÃ¹y theo trÃ¬nh bao.

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i thÃ nh cÃ´ng náº¿u chá»©c nÄƒng Ä‘iá»u khiá»ƒn cÃ´ng viá»‡c Ä‘Æ°á»£c báºt
	vÃ  khÃ´ng gáº·p lá»—i.CÃ¢u lá»‡nh vÃ´ giÃ¡ trá»‹.

	KhÃ´ng cÃ³ hiá»‡u á»©ng: cÃ¢u lá»‡nh khÃ´ng lÃ m gÃ¬.

	Tráº¡ng thÃ¡i thoÃ¡t:
	LÃºc nÃ o cÅ©ng thÃ nh cÃ´ng.ChÆ°a Ä‘áº·t biáº¿n mÃ´i trÆ°á»ng OLDPWD (máºt kháº©u cÅ©)PhÃ¢n tÃch cÃº phÃ¡p cá»§a Ä‘á»‘i sá»‘ tÃ¹y chá»n.

	Getopts Ä‘Æ°á»£c thá»§ tá»¥c trÃ¬nh bao dÃ¹ng Ä‘á»ƒ phÃ¢n tÃch cÃº phÃ¡p
		cá»§a tham sá»‘ thuá»™c vÃ trá»‹ dÆ°á»›i dáº¡ng tÃ¹y chá»n.

	OPTSTRING chá»©a nhá»¯ng chá»¯ tÃ¹y chá»n cáº§n nháºn ra;
	má»™t chá»¯ cÃ³ dáº¥u hai cháº¥m theo sau thÃ¬ tÃ¹y chá»n mong Ä‘á»£i má»™t Ä‘á»‘i sá»‘,
	mÃ  nÃªn Ä‘á»‹nh giá»›i báº±ng khoáº£ng tráº¯ng.

	Má»—i láº§n Ä‘Æ°á»£c gá»i, getopts sáº½ Ä‘áº·t tÃ¹y chá»n káº¿ tiáº¿p
		vÃ o biáº¿n trÃ¬nh bao $name
		(cÅ©ng khá»Ÿi táº¡o tÃªn Ä‘Ã³ náº¿u nÃ³ chÆ°a tá»“n táº¡i)
		vÃ  Ä‘áº·t chá»‰ má»¥c cá»§a Ä‘á»‘i sá»‘ káº¿ tiáº¿p cáº§n xá» lÃ½
		vÃ o biáº¿n trÃ¬nh bao OPTIND.
	OPTIND Ä‘Æ°á»£c sÆ¡ khá»Ÿi thÃ nh 1 má»—i láº§n trÃ¬nh bao
	hay má»™t vÄƒn lá»‡nh trÃ¬nh bao Ä‘Æ°á»£c gá»i.
	Khi má»™t tÃ¹y chá»n Ä‘Ã²i há»i má»™t Ä‘á»‘i sá»‘,
	getopts Ä‘áº·t Ä‘á»‘i sá»‘ Ä‘Ã³ vÃ o biáº¿n trÃ¬nh bao OPTARG.

	getopts thÃ´ng bÃ¡o lá»—i báº±ng má»™t cá»§a hai cÃ¡ch.
	Náº¿u kÃ½ tá»± Ä‘áº§u tiÃªn cá»§a chuá»—i OPTSTRING lÃ  dáº¥u hai cháº¥m,
	getopts dÃ¹ng chá»©c nÄƒng thÃ´ng bÃ¡o lá»—i má»™t cÃ¡ch im.
	Báº±ng cháº¿ Ä‘á»™ nÃ y, khÃ´ng in ra thÃ´ng Ä‘iá»‡p lá»—i nÃ o.
	Náº¿u gáº·p tÃ¹y chá»n sai thÃ¬ getopts Ä‘áº·t vÃ o OPTARG
	kÃ½ tá»± tÃ¹y chá»n Ä‘Æ°á»£c tÃ¬m. KhÃ´ng tÃ¬m tháº¥y Ä‘á»‘i sá»‘ cáº§n thiáº¿t
	thÃ¬ getopts Ä‘áº·t má»™t dáº¥u hai cháº¥m vÃ o TÃŠN
	vÃ  Ä‘áº·t OPTARG thÃ nh kÃ½ tá»± tÃ¹y chá»n Ä‘Æ°á»£c tÃ¬m.
	Náº¿u getopts khÃ´ng pháº£i á»Ÿ cháº¿ Ä‘á»™ im, vÃ  gáº·p tÃ¹y chá»n sai,
	thÃ¬ getopts Ä‘áº·t má»™t dáº¥u há»i Â« ? Â» vÃ o TÃŠN vÃ  bá» Ä‘áº·t OPTARG.
	KhÃ´ng tÃ¬m tháº¥y tÃ¹y chá»n cáº§n thiáº¿t thÃ¬ Â« ? Â» Ä‘Æ°á»£c Ä‘áº·t vÃ o TÃŠN,
	OPTARG bá»‹ bá» Ä‘áº·t, vÃ  in ra má»™t thÃ´ng Ä‘iá»‡p cháº©n Ä‘oÃ¡n.

	Náº¿u biáº¿n trÃ¬nh bao OPTERR cÃ³ giÃ¡ trá»‹ 0,
	thÃ¬ getopts táº¯t chá»©c nÄƒng in ra thÃ´ng Ä‘iá»‡p,
	tháºm chÃ náº¿u kÃ½ tá»± Ä‘áº§u tiÃªn cá»§a chuá»—i OPTSTRING
	khÃ´ng pháº£i lÃ  dáº¥u hai cháº¥m. OPTERR cÃ³ giÃ¡ trá»‹ 1 theo máº·c Ä‘á»‹nh.

Getopts bÃ¬nh thÆ°á»ng phÃ¢n tÃch cÃ¡ch tham sá»‘ thuá»™c vá»‹ trÃ ($0 - $9),
	nhÆ°ng náº¿u Ä‘Æ°a ra Ä‘á»‘i sá»‘ bá»• sung,
	(cÃ¡c) Ä‘á»‘i sá»‘ nÃ y Ä‘Æ°á»£c phÃ¢n tÃch Ä‘á»ƒ thay tháº¿.

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i thÃ nh cÃ´ng náº¿u tÃ¬m tháº¥y má»™t tÃ¹y chá»n;
	khÃ´ng thÃ nh cÃ´ng náº¿u gáº·p káº¿t thÃºc cÃ¡c tÃ¹y chá»n,
	hoáº·c náº¿u gáº·p lá»—i.In ra tÃªn cá»§a thÆ° má»¥c hoáº¡t Ä‘á»™ng hiá»‡n thá»i.

	TÃ¹y chá»n:
		-L	in ra giÃ¡ trá»‹ cá»§a $PWD náº¿u nÃ³ Ä‘áº·t tÃªn
			cá»§a thÆ° má»¥c hoáº¡t Ä‘á»™ng hiá»‡n thá»i
		-P	in ra thÆ° má»¥c váºt lÃ½, khÃ´ng cÃ³ liÃªn káº¿t má»m

		Máº·c Ä‘á»‹nh lÃ  Â« pwd Â» hoáº¡t Ä‘á»™ng nhÆ° lÃ  Â« -L Â» Ä‘Æ°á»£c ghi rÃµ.

		Tráº¡ng thÃ¡i thoÃ¡t:
		Tráº£ láº¡i 0 náº¿u khÃ´ng Ä‘Æ°a ra tÃ¹y chá»n sai
		vÃ  náº¿u Ä‘á»c Ä‘Æ°á»£c thÆ° má»¥c hiá»‡n thá»i.ThoÃ¡tÄá»c má»™t dÃ²ng tá»« Ä‘áº§u vÃ o tiÃªu chuáº©n, sau Ä‘Ã³ chia nÃ³ ra nhiá»u trÆ°á»ng.

	Äá»c má»™t dÃ²ng riÃªng láº» tá»« Ä‘áº§u vÃ o tiÃªu chuáº©n,
	hoáº·c tá»« bá»™ mÃ´ táº£ táºp tin FD náº¿u Ä‘Æ°a ra tÃ¹y chá»n Â« -u Â».
	DÃ²ng Ä‘Æ°á»£c chia ra nhiá»u trÆ°á»ng giá»‘ng nhÆ° khi chia tá»« ra,
	vÃ  tá»« Ä‘áº§u tiÃªn Ä‘Æ°á»£c gÃ¡n cho TÃŠN Ä‘áº§u tiÃªn,
	tá»« thá»© hai cho TÃŠN thá»© hai, v.v.,
	vÃ  tá»« cÃ²n láº¡i nÃ o Ä‘Æ°á»£c gÃ¡n cho TÃŠN cuá»‘i cÃ¹ng.
	Chá»‰ nhá»¯ng kÃ½ tá»± Ä‘Æ°á»£c tÃ¬m trong $IFS Ä‘Æ°á»£c nháºn ra lÃ  kÃ½ tá»± Ä‘á»‹nh giá»›i tá»«.

	KhÃ´ng Ä‘Æ°a ra TÃŠN thÃ¬ dÃ²ng Ä‘Æ°á»£c Ä‘á»c sáº½ Ä‘Æ°á»£c ghi nhá»› vÃ o biáº¿n REPLY (Ä‘Ã¡p á»©ng).

	TÃ¹y chá»n:
		-a máº£ng	gÃ¡n cÃ¡c tá»« Ä‘Æ°á»£c Ä‘á»c cho nhá»¯ng sá»‘ mÅ© tuáº§n tá»±
			cá»§a biáº¿n máº£ng Máº¢NG, báº¯t Ä‘áº§u tá»« sá»‘ khÃ´ng.
		-d Ä‘á»‹nh_giá»›i	tiáº¿p tá»¥c Ä‘áº¿n khi Ä‘á»c kÃ½ tá»± Ä‘áº§u tiÃªn cá»§a DELIM,
			hÆ¡n lÃ  kÃ½ tá»± dÃ²ng má»›i
		-e	dÃ¹ng Readline Ä‘á»ƒ láº¥y dÃ²ng trong má»™t trÃ¬nh bao tÆ°Æ¡ng tÃ¡c
		-i chuá»—i	dÃ¹ng chuá»—i nÃ y nhÆ° lÃ  vÄƒn báº£n Ä‘áº§u tiÃªn cho Readline
		-n sá»‘_ky_tá»±	tráº£ láº¡i sau khi Ä‘á»c sá»‘ cÃ¡c kÃ½ tá»± nÃ y,
			hÆ¡n lÃ  Ä‘á»£i má»™t kÃ½ tá»± dÃ²ng má»›i
		-N sá»‘_kÃ½_tá»±	tráº£ láº¡i chá»‰ sau khi Ä‘á»c chÃnh xÃ¡c sá»‘ cÃ¡c kÃ½ tá»± nÃ y,
		náº¿u khÃ´ng gáº·p káº¿t thÃºc táºp tin (EOF) hay quÃ¡ háº¡n Ä‘á»c, cÅ©ng bá» qua dáº¥u tÃ¡ch nÃ o
		-p nháº¯c	xuáº¥t chuá»—i NHáº®C mÃ  khÃ´ng cÃ³ kÃ½ tá»± dÃ²ng má»›i theo sau,
			trÆ°á»›c khi thá» Ä‘á»c
		-r	Ä‘á»«ng cho phÃ©p gáº¡ch chÃ©o ngÆ°á»£c thoÃ¡t kÃ½ tá»±
		-s	Ä‘á»«ng bÃ¡o lai dá»¯ liá»‡u nháºp vÃ o Ä‘áº¿n tá»« thiáº¿t bá»‹ cuá»‘i
		-t thá»i_háº¡n	quÃ¡ thá»i vÃ  tráº£ láº¡i khÃ´ng thÃ nh cÃ´ng
			náº¿u chÆ°a Ä‘á»c má»™t dÃ²ng dá»¯ liá»‡u nháºp hoÃ n toÃ n trong sá»‘ giáº¥y nÃ y.
			GiÃ¡ trá»‹ cá»§a biáº¿n TMOUT lÃ  thá»i háº¡n máº·c Ä‘á»‹nh.
			Thá»i háº¡n nÃ y cÃ³ thá»ƒ lÃ  má»™t sá»‘ thuá»™c phÃ¢n sá»‘.
			Náº¿u THá»œI_Háº N lÃ  0 thÃ¬ viá»‡c Ä‘á»c tráº£ láº¡i thÃ nh cÃ´ng chá»‰ náº¿u
			dá»¯ liá»‡u nháºp sáºµn sÃ ng trÃªn bá»™ mÃ´ táº£ táºp tin Ä‘Æ°a ra.
			Tráº¡ng thÃ¡i thoÃ¡t lá»›n hÆ¡n 128 náº¿u vÆ°á»£t quÃ¡ thá»i háº¡n nÃ y.
		-u fd	Ä‘á»c tá»« bá»™ mÃ´ táº£ táºp tin FD thay cho Ä‘áº§u vÃ o tiÃªu chuáº©n

	Tráº¡ng thÃ¡i thoÃ¡t:
	MÃ£ tráº£ láº¡i lÃ  sá»‘ khÃ´ng, náº¿u khÃ´ng gáº·p káº¿t thÃºc táºp tin,
	hay quÃ¡ háº¡n Ä‘á»c, hay Ä‘Æ°a ra bá»™ mÃ´ táº£ táºp tin sai
	lÃ m Ä‘á»‘i sá»‘ tá»›i Â« -u Â».Äá»c cÃ¡c dÃ²ng tá»« má»™t táºp tin vÃ o má»™t biáº¿n máº£ng.

	Äá»“ng nghÄ©a vá»›i Â« mapfile Â».Má»¥c ghi bá»‹ khoÃ¡Nhá»› hoáº·c hiá»ƒn thá»‹ vá»‹ trÃ cá»§a chÆ°Æ¡ng trÃ¬nh.

	XÃ¡c Ä‘á»‹nh vÃ  ghi nhá»› tÃªn Ä‘Æ°á»ng dáº«n Ä‘áº§y Ä‘á»§ cá»§a má»—i TÃŠN cÃ¢u lá»‡nh.
	Náº¿u khÃ´ng Ä‘Æ°a ra Ä‘á»‘i sá»‘, hiá»ƒn thá»‹ thÃ´ng tin vá» cÃ¡c cÃ¢u lá»‡nh Ä‘Æ°á»£c ghi nhá»›.

	TÃ¹y chá»n:
		-d	quÃªn vá»‹ trÃ Ä‘Æ°á»£c ghi nhá»› cá»§a má»—i TÃŠN
		-l	hiá»ƒn thá»‹ theo má»™t Ä‘á»‹nh dáº¡ng cÃ³ thá»ƒ Ä‘Æ°á»£c dÃ¹ng láº¡i
			dÆ°á»›i dáº¡ng dá»¯ liá»‡u nháºp vÃ o
		-p tÃªn_Ä‘Æ°á»ng_dáº«n	dÃ¹ng TÃŠN_ÄÆ¯á»œNG_DáºªN lÃ  tÃªn Ä‘Æ°á»ng dáº«n Ä‘áº§y Ä‘á»§ cá»§a TÃŠN
		-r	quÃªn má»i vá»‹ trÃ Ä‘Æ°á»£c ghi nhá»›
		-t	in ra vá»‹ trÃ Ä‘Æ°á»£c ghi nhá»› cá»§a má»—i TÃŠN,
			cÃ³ nhiá»u TÃŠN thÃ¬ cÅ©ng in ra TÃŠN tÆ°Æ¡ng á»©ng á»Ÿ trÆ°á»›c vá»‹ trÃ

	Äá»‘i sá»‘:
		TÃŠN	má»—i TÃŠN Ä‘Æ°á»£c tÃ¬m theo Ä‘Æ°á»ng dáº«n máº·c Ä‘á»‹nh $PATH,
		vÃ  Ä‘Æ°á»£c thÃªm vÃ o danh sÃ¡ch cÃ¡c cÃ¢u lá»‡nh Ä‘Æ°á»£c ghi nhá»›.

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i thÃ nh cÃ´ng náº¿u tÃ¬m Ä‘Æ°á»£c TÃŠN vÃ  khÃ´ng Ä‘Æ°a ra tÃ¹y chá»n sai.Gá»¡ bá» thÆ° má»¥c khá»i Ä‘á»‘ng.

Gá»¡ bá» thÆ° má»¥c khá»i Ä‘á»‘ng thÆ° má»¥c.
KhÃ´ng cÃ³ Ä‘á»‘i sá»‘ thÃ¬ gá»¡ bá» thÆ° má»¥c Ä‘áº§u khá»i Ä‘á»‘ng,
	vÃ  cd (chuyá»ƒn Ä‘á»•i thÆ° má»¥c) sang thÆ° má»¥c Ä‘áº§u má»›i.

+N	Gá»¡ bá» thÆ° má»¥c thá»© N (Ä‘áº¿m tá»« bÃªn trÃ¡i danh sÃ¡ch
	Ä‘Æ°á»£c hiá»ƒn thá»‹ báº±ng Â« dirs Â», báº¯t Ä‘áº§u tá»« sá»‘ khÃ´ng).
	VÃ dá»¥ :
		popd +0		gá»¡ bá» thÆ° má»¥c cuá»‘i cÃ¹ng
		popd +1		gá»¡ bá» thÆ° má»¥c thá»© hai.

-N	Gá»¡ bá» thÆ° má»¥c thá»© N (Ä‘áº¿m tá»« bÃªn pháº£i danh sÃ¡ch
	Ä‘Æ°á»£c hiá»ƒn thá»‹ báº±ng Â« dirs Â», báº¯t Ä‘áº§u tá»« sá»‘ khÃ´ng).
	VÃ dá»¥ :
		popd -0		gá»¡ bá» thÆ° má»¥c cuá»‘i cÃ¹ng
		popd -1		gá»¡ bá» thÆ° má»¥c giÃ¡p cuá»‘i.

-n	Thu há»“i chá»©c nÄƒng chuyá»ƒn Ä‘á»•i bÃ¬nh thÆ°á»ng khi gá»¡ bá» thÆ° má»¥c
	khá»i Ä‘á»‘ng, Ä‘á»ƒ thao tÃ¡c chá»‰ Ä‘á»‘ng.

Dá»±ng sáºµn Â« dirs Â» thÃ¬ hiá»ƒn thá»‹ Ä‘á»‘ng thÆ° má»¥c.

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i thÃ nh cÃ´ng náº¿u khÃ´ng Ä‘Æ°a ra Ä‘á»‘i sá»‘ sai,
	cÅ©ng khÃ´ng sai chuyá»ƒn Ä‘á»•i thÆ° má»¥c.Gá»¡ bá» má»—i TÃŠN khá»i danh sÃ¡ch cÃ¡c bÃ danh Ä‘Ã£ xÃ¡c Ä‘á»‹nh.

	TÃ¹y chá»n:
		-a	gá»¡ bá» táº¥t cáº£ cÃ¡c lá»i xÃ¡c Ä‘á»‹nh bÃ danh.

Tráº£ láº¡i thÃ nh cÃ´ng náº¿u khÃ´ng cÃ³ TÃŠN lÃ  má»™t bÃ danh khÃ´ng tá»“n táº¡i.Gá»¡ bá» cÃ´ng viá»‡c khá»i trÃ¬nh bao Ä‘ang cháº¡y.

	Gá»¡ bá» má»—i Ä‘á»‘i sá»‘ JOBSPEC (Ä‘áº·c táº£ cÃ´ng viá»‡c) khá»i báº£ng cÃ¡c cÃ´ng viá»‡c Ä‘ang cháº¡y.
	KhÃ´ng cÃ³ JOBSPEC thÃ¬ trÃ¬nh bao dÃ¹ng thÃ´ng tin riÃªng vá» cÃ´ng viá»‡c Ä‘ang Ä‘ang cháº¡y.

	TÃ¹y chá»n:
		-a	gá»¡ bá» má»i cÃ´ng viá»‡c náº¿u khÃ´ng Ä‘Æ°a ra JOBSPEC
		-h	Ä‘Ã¡nh dáº¥u má»—i JOBSPEC Ä‘á»ƒ khÃ´ng gá»i tÃn hiá»‡u ngÆ°ng káº¿t ná»‘i SIGHUP
			cho cÃ´ng viá»‡c náº¿u trÃ¬nh bao nháºn Ä‘Æ°á»£c SIGHUP
		-r	gá»¡ bá» chá»‰ nhá»¯ng cÃ´ng viá»‡c Ä‘ang cháº¡y

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i thÃ nh cÃ´ng náº¿u khÃ´ng Ä‘Æ°a ra tÃ¹y chá»n sai hay JOBSPEC sai.Gá»¡ bá» thÆ° má»¥c khá»i Ä‘á»‘ng thÆ° má»¥c.
KhÃ´ng Ä‘Æ°a ra Ä‘á»‘i sá»‘ thÃ¬ gá»¡ bá» thÆ° má»¥c Ä‘áº§u khá»i Ä‘á»‘ng,
	vÃ  chuyá»ƒn Ä‘á»•i sang thÆ° má»¥c Ä‘áº§u má»›i.

	TÃ¹y chá»n:
		-n	thu há»“i chá»©c nÄƒng chuyá»ƒn Ä‘á»•i thÆ° má»¥c bÃ¬nh thÆ°á»ng
		khi gá»¡ bá» thÆ° má»¥c khá»i Ä‘á»‘ng, thÃ¬ chá»‰ thao tÃ¡c Ä‘á»‘ng chÃnh nÃ³.

	Äá»‘i sá»‘ :
		+N	gá»¡ bá» má»¥c thá»© N Ä‘áº¿m tá»« bÃªn trÃ¡i danh sÃ¡ch
			hiá»ƒn thá»‹ báº±ng Â« dirs Â», báº¯t Ä‘áº§u tá»« sá»‘ khÃ´ng.
	VÃ dá»¥ : Â« popd +0 Â» sáº½ gá»¡ bá» thÆ° má»¥c Ä‘áº§u tiÃªn,
		Â« popd +1 Â» gá»¡ bá» thÆ° má»¥c thá»© hai, v.v.

		-N	gá»¡ bá» má»¥c thá»© N Ä‘áº¿m tá»« bÃªn pháº£i danh sÃ¡ch
			hiá»ƒn thá»‹ báº±ng Â« dirs Â», báº¯t Ä‘áº§u tá»« sá»‘ khÃ´ng.
	VÃ dá»¥ : Â« popd -0 Â» sáº½ gá»¡ bá» thÆ° má»¥c cuá»‘i cÃ¹ng,
		Â« popd -1 Â» gá»¡ bá» thÆ° má»¥c giÃ¡p cuá»‘i, v.v.

	Dá»±ng sáºµn Â« dirs Â» sáº½ hiá»ƒn thá»‹ Ä‘á»‘ng thÆ° má»¥c.Thay tháº¿ trÃ¬nh bao báº±ng cÃ¢u lá»‡nh Ä‘Æ°a ra.

	Thá»±c thi cÃ¢u Lá»†NH, cÅ©ng thay tháº¿ trÃ¬nh bao nÃ y báº±ng chÆ°Æ¡ng trÃ¬nh Ä‘Æ°á»£c ghi rÃµ.
	CÃ¡c Äá»I_Sá» trá»Ÿ thÃ nh cÃ¡c Ä‘á»‘i sá»‘ Ä‘á»‘i vá»›i cÃ¢u Lá»†NH.
	KhÃ´ng Ä‘Æ°a ra cÃ¢u Lá»†NH thÃ¬ báº¥t cá»© viá»‡c chuyá»ƒn hÆ°á»›ng nÃ o
	sáº½ xáº£y ra trong trÃ¬nh bao Ä‘ang cháº¡y.

	TÃ¹y chá»n:
		-a tÃªn	gá»i TÃŠN cho cÃ¢u Lá»†NH dÆ°á»›i dáº¡ng Ä‘á»‘i sá»‘ thá»© khÃ´ng
		-c	thá»±c thi cÃ¢u Lá»†NH vá»›i má»™t mÃ´i trÆ°á»ng trá»‘ng
		-l	Ä‘áº·t má»™t dáº¥u gáº¡ch vÃ o Ä‘á»‘i sá»‘ thá»© khÃ´ng Ä‘á»‘i vá»›i cÃ¢u Lá»†NH

	Náº¿u cÃ¢u Lá»†NH khÃ´ng thá»ƒ thá»±c thi Ä‘Æ°á»£c, má»™t trÃ¬nh bao khÃ´ng tÆ°Æ¡ng tÃ¡c
	sáº½ thoÃ¡t ra, náº¿u khÃ´ng Ä‘áº·t tÃ¹y chá»n trÃ¬nh bao Â« execfail Â».

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i thÃ nh cÃ´ng náº¿u tÃ¬m Ä‘Æ°á»£c cÃ¢u Lá»†NH vÃ  khÃ´ng gáº·p lá»—i chuyá»ƒn hÆ°á»›ng.ThÃ´ng bÃ¡o thá»i gian Ä‘Æ°á»£c chiáº¿m khi á»‘ng dáº«n thá»±c thi.

	Thá»±c thi PIPELINE (á»‘ng dáº«n) vÃ  in ra báº£n tÃ³m táº¯t thá»i gian tháºt,
	thá»i gian CPU cá»§a ngÆ°á»i dÃ¹ng, vÃ  thá»i gian CPU cá»§a há»‡ thá»‘ng
	00 chiáº¿m khi thá»±c thi á»‘ng dáº«n, khi á»‘ng dáº«n cháº¥m dá»©t.

	TÃ¹y chá»n:
		-p	in ra báº£n tÃ³m táº¯t Ä‘áº¿m thá»i gian
			theo Ä‘á»‹nh dáº¡ng POSIX cÃ³ thá»ƒ mang theo

	GiÃ¡ trá»‹ cá»§a biáº¿n TIMEFORMAT (Ä‘á»‹nh dáº¡ng thá»i gian)
	Ä‘Æ°á»£c dÃ¹ng lÃ m Ä‘á»‹nh dáº¡ng káº¿t xuáº¥t.

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº¡ng thÃ¡i tráº£ lai lÃ  tráº¡ng thÃ¡i tráº£ láº¡i cá»§a PIPELINE.Tiáº¿p tá»¥c láº¡i cháº¡y vÃ²ng láº·p kiá»ƒu trong, trong khi hay Ä‘áº¿n khi.

	Tiáº¿p tá»¥c láº¡i láº§n láº·p láº¡i káº¿ tiáº¿p cá»§a vÃ²ng láº·p bao bá»c
		kiá»ƒu TRONG, TRONG KHI hay Äáº¾N KHI.
	ÄÆ°a ra N thÃ¬ tiáº¿p tá»¥c cháº¡y vÃ²ng láº·p bao bá»c thá»© N.

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº¡ng thÃ¡i thoÃ¡t lÃ  0 náº¿u N khÃ´ng nhá» hÆ¡n hay báº±ng 1.Tiáº¿p tá»¥c láº¡i cÃ´ng viá»‡c á»Ÿ trÆ°á»›c.

	TÆ°Æ¡ng Ä‘Æ°Æ¡ng vá»›i Ä‘á»‘i sá»‘ Äáº¶C_Táº¢_CÃ”NG_VIá»†C vá»›i cÃ¢u lá»‡nh Â« fg Â».
	Tiáº¿p tá»¥c lai má»™t cÃ´ng viá»‡c bá»‹ dá»«ng cháº¡y hay cháº¡y vá» ná»n.
	Äáº¶C_Táº¢_CÃ”NG_VIá»†C cÃ³ thá»ƒ ghi rÃµ hoáº·c má»™t tÃªn cÃ´ng viá»‡c,
	hoáº·c má»™t sá»‘ thá»© tá»± cÃ´ng viá»‡c.
	Äáº·t má»™t Â« & Â» theo sau Äáº¶C_Táº¢_CÃ”NG_VIá»†C sáº½ Ä‘áº·t cÃ´ng viá»‡c vá» ná»n,
	nhÆ° lÃ  Ä‘áº·c táº£ cÃ´ng viá»‡c Ä‘Ã£ Ä‘Æ°á»£c cung cáº¥p dÆ°á»›i dáº¡ng má»™t Ä‘á»‘i sá»‘ vá»›i Â« bg Â».

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i tráº¡ng thÃ¡i cá»§a cÃ´ng viá»‡c Ä‘Ã£ tiáº¿p tá»¥c láº¡i.Tráº£ láº¡i má»™t káº¿t quáº£ thÃ nh cÃ´ng.

	Tráº¡ng thÃ¡i thoÃ¡t:
	LÃºc nÃ o cÅ©ng thÃ nh cÃ´ng.Tráº£ vá» káº¿t quáº£ khÃ´ng thÃ nh cÃ´ng.

	Tráº¡ng thÃ¡i thoÃ¡t:
	LÃºc nÃ o cÅ©ng khÃ´ng thÃ nh cÃ´ng.Tráº£ láº¡i tá»« má»™t chá»©c nÄƒng trÃ¬nh bao.

	GÃ¢y ra má»™t chá»©c nÄƒng hay vÄƒn lá»‡nh tá»« nguá»“n sáº½ thoÃ¡t
	vá»›i giÃ¡ trá»‹ tráº£ láº¡i Ä‘Æ°á»£c N ghi rÃµ.
	KhÃ´ng Ä‘Æ°a ra N thÃ¬ tráº¡ng thÃ¡i tráº£ láº¡i thuá»™c vá» cÃ¢u lá»‡nh cuá»‘i cÃ¹ng
		Ä‘Æ°á»£c cháº¡y bÃªn trong chá»©c nÄƒng hay vÄƒn lá»‡nh.

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i N, hoáº·c bá»‹ lá»—i náº¿u trÃ¬nh bao khÃ´ng Ä‘ang cháº¡y
		má»™t chá»©c nÄƒng hay vÄƒn lá»‡nh.Tráº£ vá» ngá»¯ cáº£nh cá»§a cuá»™c gá»i hÃ m phá»¥ hiá»‡n thá»i.

	KhÃ´ng cÃ³ B_THá»¨C thÃ¬ tráº£ láº¡i Â« $line $filename Â».
	CÃ³ B_THá»¨C thÃ¬ tráº£ láº¡i Â« $line $subroutine $filename Â»;
	thÃ´ng tin thÃªm nÃ y cÃ³ thá»ƒ Ä‘Æ°á»£c dÃ¹ng Ä‘á»ƒ cung cáº¥p váº¿t Ä‘á»‘ng.

	GiÃ¡ trá»‹ cá»§a B_THá»¨C thÃ¬ ngá»¥ Ã½ bao nhiÃªu khung gá»i cáº§n lÃ¹i láº¡i
Ä‘áº±ng trÆ°á»›c khung hiá»‡n táº¡i; khung Ä‘áº§u lÃ  khung 0.

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i 0 náº¿u trÃ¬nh bao Ä‘ang cháº¡y chá»©c nÄƒng trÃ¬nh bao,
		B_THá»¨C cÅ©ng há»£p lá»‡.Tráº£ láº¡i ngá»¯ cáº£nh cá»§a lá»i gá»i thÆ°á»ng trÃ¬nh con hiá»‡n thá»i.

    KhÃ´ng cÃ³ BTHá»°C thÃ¬ trÃ  láº¡i Äang cháº¡yLá»—i chia ra tá»«ng Ä‘oáº¡nChá»n tá»« trong má»™t danh sÃ¡ch, vÃ  thá»±c thi cÃ¢u lá»‡nh.

WORDS Ä‘Æ°á»£c má»Ÿ rá»™ng, mÃ  táº¡o má»™t danh sÃ¡ch cÃ¡c tá»«.
Táºp há»£p cÃ¡c tá»« Ä‘Ã£ má»Ÿ rá»™ng Ä‘Æ°á»£c in trÃªn Ä‘áº§u lá»—i tiÃªu chuáº©n.
	má»—i tá»« cÃ³ con sá»‘ Ä‘i trÆ°á»›c.
KhÃ´ng cÃ³ Â« in WORDS Â» thÃ¬ giáº£ sá» Â« in "$@" Â».
Dáº¥u nháº¯c PS3 thÃ¬ Ä‘Æ°á»£c hiá»ƒn thá»‹, vÃ  má»™t dÃ²ng Ä‘Æ°á»£c Ä‘á»c
	tá»« Ä‘áº§u vÃ o tiÃªu chuáº©n.
Náº¿u dÃ²ng nÃ y lÃ  sá»‘ tÆ°Æ¡ng á»©ng vá»›i má»™t cá»§a nhá»¯ng tá»« Ä‘Æ°á»£c hiá»ƒn thá»‹,
	TÃŠN sáº½ Ä‘Æ°á»£c Ä‘áº·t thÃ nh tá»« Ä‘Ã³.
DÃ²ng rá»—ng thÃ¬ hiá»ƒn thá»‹ láº¡i WORDS vÃ  dáº¥u nháº¯c.
Äá»c káº¿t thÃºc táºp tin thÃ¬ cháº¡y xong cÃ¢u lá»‡nh Ä‘Ã³.
Báº¥t cá»© giÃ¡ trá»‹ khÃ¡c nÃ o Ä‘Æ°á»£c Ä‘á»c sáº½ gÃ¢y ra TÃŠN Ä‘Æ°á»£c Ä‘áº·t thÃ nh vÃ´ giÃ¡ trá»‹.
DÃ²ng Ä‘Æ°á»£c Ä‘á»c sáº½ Ä‘Æ°á»£c lÆ°u láº¡i vÃ o biáº¿n REPLY (tráº£ lá»i).
CÃ¡c CÃ‚U_Lá»†NH Ä‘Æ°á»£c thá»±c hiá»‡n sau khi chá»n má»—i Ä‘á»“,
	Ä‘áº¿n khi má»™t lá»‡nh giÃ¡n Ä‘oáº¡n Ä‘Æ°á»£c thá»±c hiá»‡n.

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i tráº¡ng thÃ¡i cá»§a cÃ¢u lá»‡nh cuá»‘i cÃ¹ng Ä‘Æ°á»£c cháº¡y.Gá»i má»™t tÃn hiá»‡u cho má»™t cÃ´ng viá»‡c.

	Gá»i cho nhá»¯ng tiáº¿n trÃ¬nh Ä‘Æ°á»£c mÃ£ sá»‘ hay Ä‘áº·c táº£ cÃ´ng viá»‡c Ä‘áº¡i diá»‡n
	tÃn hiá»‡u Ä‘Æ°á»£c SIGSPEC hay SIGNUM Ä‘Æ°á»£c Ä‘áº·t tÃªn.
	KhÃ´ng Ä‘Æ°a ra SIGSPEC, cÅ©ng khÃ´ng Ä‘Æ°a ra SIGNUM,
	thÃ¬ giáº£ sá» SIGTERM.

	TÃ¹y chá»n:
		-s TTH	TTH lÃ  má»™t tÃªn tÃn hiá»‡u
		-n STH	STH lÃ  má»™t sá»‘ thá»© tá»± tÃn hiá»‡u
		-l	liá»‡t kÃª cÃ¡c tÃªn tÃn hiá»‡u ;
			náº¿u cÃ³ Ä‘á»‘i sá»‘ theo sau Â« -l Â», thÃ¬ giáº£ sá» má»—i Ä‘á»‘i sá»‘
			lÃ  sá»‘ thá»© tá»± tin hiá»‡u cho Ä‘Ã³ nÃªn liá»‡t kÃª tÃªn

	Kill lÃ  má»™t dá»±ng sáºµn trÃ¬nh bao vÃ¬ hai lÃ½ do :
	nÃ³ cho phÃ©p dÃ¹ng mÃ£ sá»‘ cÃ´ng viá»‡c thay cho mÃ£ sá»‘ tiáº¿n trÃ¬nh,
	vÃ  cho phÃ©p giáº¿t tiáº¿n trÃ¬nh náº¿u tá»›i giá»›i háº¡n sá»‘ cÃ¡c tiáº¿n trÃ¬nh
	Ä‘Æ°á»£c phÃ©p táº¡o.
	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i thÃ nh cÃ´ng náº¿u khÃ´ng Ä‘Æ°a ra tÃ¹y chá»n sai hay gáº·p lá»—i.Äáº·t cÃ¡c tá»• há»£p phÃm vÃ  biáº¿n kiá»ƒu Readline.

	Tá»• há»£p má»™t dÃ£y phÃm vá»›i má»™t chá»©c nÄƒng hay vÄ© lá»‡nh kiá»ƒu Readline,
		hoáº·c Ä‘áº·t má»™t biáº¿n Readline.
	CÃº phÃ¡p Ä‘á»‘i sá»‘ khÃ¡c tÃ¹y chá»n cÅ©ng tÆ°Æ¡ng Ä‘Æ°Æ¡ng vá»›i cÃº phÃ¡p
		trong Â« ~/.inputrc Â», nhÆ°ng pháº£i Ä‘Æ°á»£c gá»i dÆ°á»›i dáº¡ng
		má»™t Ä‘á»‘i sá»‘ riÃªng láº».
		VÃ dá»¥ : bind '"\C-x\C-r": re-read-init-file'.

	TÃ¹y chá»n:
		-m sÆ¡_Ä‘á»“_phÃm	dÃ¹ng sÆ¡ Ä‘á»“ phÃm nÃ y lÃ m sÆ¡ Ä‘á»“ phÃm
			trong khoáº£ng thá»i gian cháº¡y cÃ¢u lá»‡nh nÃ y.
		TÃªn sÆ¡ Ä‘á»“ phÃm há»£p lá»‡:
			emacs, emacs-standard, emacs-meta,
			emacs-ctlx, vi, vi-move, vi-command,
			vi-insert
		-l	liá»‡t kÃª cÃ¡c tÃªn chá»©c nÄƒng
		-P	liá»‡t kÃª cÃ¡c tÃªn vÃ  tá»• há»£p cá»§a chá»©c nÄƒng
		-p	liá»‡t kÃª cÃ¡c chá»©c nÄƒng vÃ  tá»• há»£p theo má»™t Ä‘á»‹nh dáº¡ng
			cÃ³ thá»ƒ dÃ¹ng láº¡i Ä‘Æ°á»£c lÃ m dá»¯ liá»‡u nháºp vÃ o
		-S	liá»‡t kÃª cÃ¡c dÃ£y phÃm mÃ  gá»i vÄ© lá»‡nh vÃ  giÃ¡ trá»‹ tÆ°Æ¡ng á»©ng
		-S	liá»‡t kÃª cÃ¡c dÃ£y phÃm mÃ  gá»i vÄ© lá»‡nh vÃ  giÃ¡ trá»‹ tÆ°Æ¡ng á»©ng
			theo má»™t Ä‘á»‹nh dáº¡ng cÃ³ thá»ƒ dÃ¹ng láº¡i Ä‘Æ°á»£c
			lÃ m dá»¯ liá»‡u nháºp vÃ o
		-q tÃªn_chá»©c_nÄƒng	há»i nhá»¯ng phÃm nÃ o gá»i chá»©c nÄƒng nÃ y
		-u tÃªn_chá»©c_nÄƒng	thÃ¡o tá»• há»£p táº¥t cáº£ cÃ¡c phÃm tá»• há»£p
			vá»›i chá»©c nÄƒng nÃ y
		-r dÃ£y_phÃm	gá»¡ bá» tá»• há»£p Ä‘á»‘i vá»›i dÃ£y phÃm nÃ y
		-f tÃªn_táºp_tin	Ä‘á»c cÃ¡c tá»• há»£p phÃm tá»« táºp tin nÃ y
		-x dÃ£y_phÃm:lá»‡nh_trÃ¬nh_bao	cháº¡y cÃ¢u lá»‡nh trÃ¬nh bÃ o nÃ y
			khi dÃ£y phÃm nÃ y Ä‘Æ°á»£c nháºp vÃ o

	Tráº¡ng thÃ¡i thoÃ¡t:
	bind tráº£ láº¡i 0 náº¿u khÃ´ng Ä‘Æ°a ra tÃ¹y chá»n khÃ´ng nháºn ra hay gáº·p lá»—i.Äáº·t vÃ  bá» Ä‘áº·t cÃ¡c tÃ¹y chá»n trÃ¬nh bao.

	Thay Ä‘á»•i thiáº¿t láºp cá»§a má»—i tÃ¹y chá»n trÃ¬nh bao cÃ³ TÃŠN_TÃ™Y_CHá»ŒN.
	KhÃ´ng cÃ³ Ä‘á»‘i sá»‘ tÃ¹y chá»n thÃ¬ liá»‡t kÃª táº¥t cáº£ cÃ¡c tÃ¹y chá»n trÃ¬nh bao,
	cÅ©ng ngá»¥ Ã½ má»—i tÃ¹y chá»n Ä‘Æ°á»£c Ä‘áº·t hay khÃ´ng.

	TÃ¹y chá»n:
		-o	háº¡n cháº¿ TÃŠN_TÃ™Y_CHá»ŒN thÃ nh nhá»¯ng tÃªn Ä‘Æ°á»£c xÃ¡c Ä‘á»‹nh
		Ä‘á»ƒ sá» dá»¥ng vá»›i Â« set -o Â»
		-p	in ra má»—i tÃ¹y chá»n trÃ¬nh bao, cÅ©ng ngá»¥ Ã½ tráº¡ng thÃ¡i cá»§a nÃ³
		-q	thu há»“i káº¿t xuáº¥t
		-u	táº¯t (bá» Ä‘áº·t) má»—i TÃŠN_TÃ™Y_CHá»ŒN

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i thÃ nh cÃ´ng náº¿u TÃŠN_TÃ™Y_CHá»ŒN Ä‘Æ°á»£c báºt;
	khÃ´ng thÃ nh cÃ´ng náº¿u Ä‘Æ°a ra tÃ¹y chá»n sai hay TÃŠN_TÃ™Y_CHá»ŒN bá»‹ táº¯t.Äáº·t thuá»™c tÃnh xuáº¥t kháº©u cho biáº¿n trÃ¬nh bao.

	ÄÃ¡nh dáº¥u má»—i TÃŠN Ä‘á»ƒ tá»± Ä‘á»™ng xuáº¥t vÃ o mÃ´i trÆ°á»ng cá»§a cÃ¢u lá»‡nh Ä‘Æ°á»£c cháº¡y vá» sau.
	ÄÆ°a ra GIÃ_TRá»Š thÃ¬ gÃ¡n GIÃ_TRá»Š trÆ°á»›c khi xuáº¥t ra.

	TÃ¹y chá»n:
		-f	tham chiáº¿u Ä‘áº¿n chá»©c nÄƒng trÃ¬nh bao
		-n	gá»¡ bá» thuá»™c tÃnh xuáº¥t kháº©u khá»i má»—i TÃŠN
		-p	hiá»ƒn thá»‹ danh sÃ¡ch cÃ¡c biáº¿n vÃ  chá»©c nÄƒng Ä‘á»u Ä‘Æ°á»£c xuáº¥t ra

	Äá»‘i sá»‘ Â« -- Â» thÃ¬ táº¯t chá»©c nÄƒng xá» lÃ½ tÃ¹y chá»n sau ná»¯a.

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i thÃ nh cÃ´ng náº¿u khÃ´ng Ä‘Æ°a ra tÃ¹y chá»n sai hay TÃŠN sai,Äáº·t cÃ¡c giÃ¡ trá»‹ vÃ  thuá»™c tÃnh cá»§a biáº¿n.

	QuÃ¡ cÅ©. Xem Â« help declare Â».CÃ¢u lá»‡nh trÃ¬nh bao tÆ°Æ¡ng á»©ng vá»›i tá»« khoÃ¡ `TÃ¹y chá»n trÃ¬nh bao :
Dá»i tham sá»‘ thuá»™c vá»‹ trÃ.

	Thay Ä‘á»•i tÃªn cá»§a tham sá»‘ thuá»™c vá»‹ trÃ $N+1,$N+2 ... Ä‘áº¿n $1,$2 ...
	KhÃ´ng Ä‘Æ°a ra N thÃ¬ giáº£ sá» nÃ³ lÃ  1.

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i thÃ nh cÃ´ng náº¿u N khÃ´ng Ã¢m hay lá»›n hÆ¡n $#.TÃn hiá»‡u %dGhi rÃµ Readline sáº½ Ä‘iá»n ná»‘t cÃ¡c Ä‘á»‘i sá»‘ nhÆ° tháº¿ nÃ o.

	Äá»‘i vá»›i má»—i TÃŠN, ghi rÃµ cÃ¡c Ä‘á»‘i sá»‘ sáº½ Ä‘Æ°á»£c Ä‘iá»n ná»‘t nhÆ° tháº¿ nÃ o.
	KhÃ´ng Ä‘Æ°a ra tÃ¹y chá»n thÃ¬ in ra cÃ¡c Ä‘áº·c táº£ Ä‘iá»n ná»‘t
	báº±ng má»™t cÃ¡ch cho phÃ©p dÃ¹ng láº¡i Ä‘áº·c táº£ lÃ m dá»¯ liá»‡u nháºp vÃ o.

	TÃ¹y chá»n:
		-p	in ra cÃ¡c Ä‘áº·c táº£ Ä‘iá»n ná»‘t Ä‘Ã£ tá»“n táº¡i theo má»™t Ä‘á»‹nh dáº¡ng
			cÃ³ thá»ƒ dÃ¹ng láº¡i Ä‘Æ°á»£c
		-r	gá»¡ bá» má»™t Ä‘áº·c táº£ Ä‘iá»n ná»‘t cho má»—i TÃŠN,
			hoáº·c náº¿u khÃ´ng Ä‘Æ°a ra TÃŠN thÃ¬ gá»¡ bá» táº¥t cáº£ cÃ¡c Ä‘áº·c táº£ Ä‘iá»n ná»‘t
      -D	Ã¡p dá»¥ng cÃ¡c sá»± hoÃ n thÃ nh vÃ  hÃ nh Ä‘á»™ng lÃ m máº·c Ä‘á»‹nh
		cho cÃ¢u lá»‡nh mÃ  khÃ´ng xÃ¡c Ä‘á»‹nh sá»± hoÃ n thÃ nh riÃªng
      -E	Ã¡p dá»¥ng cÃ¡c sá»± hoÃ n thÃ nh vÃ  hÃ nh Ä‘á»™ng cho cÃ¢u lá»‡nh Â« trá»‘ng Â»
		(empty) -- thá» hoÃ n thÃ nh trÃªn dÃ²ng tráº¯ng

	Khi chá»©c nÄƒng Ä‘iá»n ná»‘t Ä‘Æ°á»£c thá», nhá»¯ng hÃ nh Ä‘á»™ng Ä‘Æ°á»£c lÃ m
		theo thá»© tá»± cá»§a nhá»¯ng tÃ¹y chá»n chá»¯ hoa bÃªn trÃªn.

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i thÃ nh cÃ´ng náº¿u khÃ´ng Ä‘Æ°a ra tÃ¹y chá»n sai hay gáº·p lá»—i.Bá»‹ dá»«ngBá»‹ dá»«ng (tÃn hiá»‡u)Bá»‹ dá»«ng (tty nháºp)Bá»‹ dá»«ng (tty xuáº¥t)Bá»‹ dá»«ng(%s)NgÆ°ng cháº¡y trÃ¬nh bao.

	NgÆ°ng cháº¡y trÃ¬nh bao nÃ y Ä‘áº¿n khi nÃ³ nháºn tÃn hiá»‡u tiáº¿p tá»¥c (SIGCONT).
	Náº¿u khÃ´ng Ã©p buá»™c thÃ¬ khÃ´ng thá»ƒ ngÆ°ng cháº¡y trÃ¬nh bao kiá»ƒu Ä‘Äƒng nháºp.

	TÃ¹y chá»n:
		-f	Ã©p buá»™c viá»‡c ngÆ°ng, tháºm chÃ náº¿u trÃ¬nh bao cÃ³ kiá»ƒu Ä‘Äƒng nháºp

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i thÃ nh cÃ´ng náº¿u chá»©c nÄƒng Ä‘iá»u khiá»ƒn cÃ´ng viá»‡c Ä‘Ã£ Ä‘Æ°á»£c báºt, vÃ  khÃ´ng gáº·p lá»—i.Äá»ŠNH Dáº NG THá»œI GIAN: Â« %c Â»: kÃ½ tá»± Ä‘á»‹nh dáº¡ng khÃ´ng há»£p lá»‡Bá»‹ cháº¥m dá»©tThÆ° tÃn trong %s Ä‘Ã£ Ä‘Æ°á»£c Ä‘á»c
Váº«n cÃ³ cÃ´ng viá»‡c Ä‘ang cháº¡y.
Váº«n cÃ³ cÃ´ng viá»‡c bá»‹ dá»«ng.
KHÃ”NG Báº¢O Äáº¢M GÃŒ Cáº¢, vá»›i Ä‘iá»u kiá»‡n Ä‘Æ°á»£c phÃ¡p luáºt cho phÃ©p.
Nhá»¯ng cÃ¢u lá»‡nh trÃ¬nh bao nÃ y Ä‘Æ°á»£c xÃ¡c Ä‘á»‹nh ná»™i bá»™. HÃ£y gÃµ :
 â€¢ help		Ä‘á»ƒ xem danh sÃ¡ch nÃ y.
 â€¢ info bash	Ä‘á»ƒ tÃ¬m thÃªm thÃ´ng tin chung vá» trÃ¬nh bao.
 â€¢ man -k	} â€¢ info		} Ä‘á»ƒ tÃ¬m thÃªm thÃ´ng tin vá» lá»‡nh khÃ´ng cÃ³ trong danh sÃ¡ch nÃ y.

Dáº¥u sao Â« * Â» bÃªn cáº¡nh tÃªn thÃ¬ ngá»¥ Ã½ nÃ³ bá»‹ táº¯t.

ÄÃ¢y lÃ  pháº§n má»m tá»± do thÃ¬ báº¡n cÃ³ quyá»n sá»a Ä‘á»•i vÃ  phÃ¡t hÃ nh láº¡i nÃ³.
GÃµ cÃ¢u lá»‡nh trá»£ giÃºp Â« %s -c "help set" Â» Ä‘á»ƒ xem thÃªm thÃ´ng tin vá» cÃ¡c tÃ¹y chá»n trÃ¬nh bao.
GÃµ cÃ¢u lá»‡nh trá»£ giÃºp Â« %s -c help Â» Ä‘á»ƒ xem thÃªm thÃ´ng tin vá» cÃ¡c cÃ¢u lá»‡nh trÃ¬nh bao dá»±ng sáºµn.
KhÃ´ng rÃµ tÃn hiá»‡u #KhÃ´ng rÃµ tÃn hiá»‡u #%dLá»—i khÃ´ng rÃµKhÃ´ng rÃµ tráº¡ng thÃ¡iBá» Ä‘áº·t giÃ¡ trá»‹ vÃ  thuá»™c tÃnh cá»§a biáº¿n vÃ  chá»©c nÄƒng cá»§a trÃ¬nh bao.

	Äá»‘i vá»›i má»—i TÃŠN, gá»¡ bá» biáº¿n hay chá»©c nÄƒng mÃ  tÆ°Æ¡ng á»©ng.

	TÃ¹y chá»n:
		-f	Ä‘á»c má»—i TÃŠN dÆ°á»£i dáº¡ng má»™t chá»©c nÄƒng trÃ¬nh bao
		-v	Ä‘á»c má»—i TÃŠN dÆ°á»£i dáº¡ng má»™t biáº¿n trÃ¬nh bao

	KhÃ´ng cÃ³ tÃ¹y chá»n thÃ¬ chá»©c nÄƒng bá» Ä‘áº·t sáº½ thá» bá» Ä‘áº·t má»™t biáº¿n,
	vÃ  náº¿u khÃ´ng thÃ nh cÃ´ng, sau Ä‘Ã³ thá» bá» Ä‘áº·t má»™t chá»©c nÄƒng.

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i thÃ nh cÃ´ng náº¿u khÃ´ng Ä‘Æ°a ra tÃ¹y chá»n sai, vÃ  TÃŠN khÃ´ng chá»‰ Ä‘á»c.Äiá»u kiá»‡n VR gáº¥pSá» dá»¥ng:	%s [tÃ¹y chá»n GNU dÃ i] [tÃ¹y chá»n] ...
	%s [tÃ¹y chá»n GNU dÃ i] [tÃ¹y chá»n] táºp-tin-vÄƒn-lá»‡nh ...
DÃ¹ng Â« %s Â» Ä‘á»ƒ rá»i trÃ¬nh bao.
DÃ¹ng lá»‡nh Â« bashbug Â» Ä‘á»ƒ thÃ´ng bÃ¡o lá»—i.
TÃn hiá»‡u ngÆ°á»i dÃ¹ng 1TÃn hiá»‡u ngÆ°á»i dÃ¹ng 2Äá»£i cÃ´ng viá»‡c cháº¡y xong, sau Ä‘Ã³ tráº£ láº¡i tráº¡ng thÃ¡i thoÃ¡t.

	Äá»£i tiáº¿n trÃ¬nh Ä‘Æ°á»£c ID nháºn diá»‡n, mÃ  cÃ³ thá»ƒ lÃ  má»™t mÃ£ sá»‘ tiáº¿n trÃ¬nh
		hay má»™t Ä‘áº·c táº£ cÃ´ng viá»‡c, sau Ä‘Ã³ tráº£ láº¡i tráº¡ng thÃ¡i cháº¥m dá»©t cá»§a nÃ³.
		KhÃ´ng Ä‘Æ°a ra ID thÃ¬ Ä‘á»£i táº¥t cáº£ cÃ¡c tiáº¿n trÃ¬nh con Ä‘ang cháº¡y,
		vÃ  tráº¡ng thÃ¡i tráº£ láº¡i lÃ  sá»‘ khÃ´ng.
		Náº¿u ID lÃ  má»™t Ä‘áº·c táº£ cÃ´ng viá»‡c thÃ¬ Ä‘á»£i táº¥t cáº£ cÃ¡c tiáº¿n trÃ¬nh
		váº«n náº±m trong á»‘ng dáº«n cá»§a cÃ´ng viá»‡c Ä‘Ã³.

	TrÃ¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i tráº¡ng thÃ¡i cá»§a ID; khÃ´ng thÃ nh cÃ´ng náº¿u ID sai
		hoáº·c Ä‘Æ°a ra tÃ¹y chá»n sai.Äá»£i tiáº¿n trÃ¬nh cháº¡y xong, sau Ä‘Ã³ thÃ´ng bÃ¡o tráº¡ng thÃ¡i thoÃ¡t cá»§a nÃ³.

	Äá»£i tiáº¿n trÃ¬nh Ä‘Ã£ ghi rÃµ,
	sau Ä‘Ã³ thÃ´ng bÃ¡o tráº¡ng thÃ¡i cháº¥m dá»©t cá»§a nÃ³.
	Náº¿u khÃ´ng Ä‘Æ°a ra PID (mÃ£ sá»‘ tiáº¿n trÃ¬nh)
	thÃ¬ Ä‘á»£i táº¥t cáº£ cÃ¡c tiáº¿n trÃ¬nh con Ä‘ang cháº¡y,
	vÃ  mÃ£ tráº£ láº¡i lÃ  sá»‘ khÃ´ng.
	PID pháº£i lÃ  má»™t mÃ£ sá»‘ tiáº¿n trÃ¬nh.

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i tráº¡ng thÃ¡i cá»§a ID (mÃ£ sá»‘);
	khÃ´ng thÃ nh cÃ´ng náº¿u ID sai,
	hoáº·c náº¿u Ä‘Æ°a ra tÃ¹y chá»n sai.Cá»a sá»• bá»‹ thay Ä‘á»•iGhi cÃ¡c Ä‘á»‘i sá»‘ vÃ o Ä‘áº§u ra tiÃªu chuáº©n

	Hiá»ƒn thá»‹ cÃ¡c Äá»I_Sá» trÃªn Ä‘áº§u ra tiÃªu chuáº©n vá»›i má»™t dÃ²ng má»›i theo sau.

	TÃ¹y chá»n:
		-n	Ä‘á»«ng phá»¥ thÃªm má»™t dÃ²ng má»›i

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i thÃ nh cÃ´ng náº¿u khÃ´ng gáº·p lá»—i ghi.Ghi cÃ¡c Ä‘á»‘i sá»‘ vÃ o Ä‘áº§u ra tiÃªu chuáº©n.

	Hiá»ƒn thá»‹ cÃ¡c Äá»I_Sá» trÃªn Ä‘áº§u ra tiÃªu chuáº©n,
		vá»›i má»™t kÃ½ tá»± dÃ²ng má»›i theo sau.

	TÃ¹y chá»n:
		-n	Ä‘á»«ng phá»¥ thÃªm kÃ½ tá»± dÃ²ng má»›i
		-e	báºt Ä‘á»c kÃ½ tá»± thoÃ¡t kiá»ƒu gáº¡ch chÃ©o ngÆ°á»£c mÃ  theo sau
		-E	thu há»“i dá»©t khoÃ¡t Ä‘á»c kÃ½ tá»± thoÃ¡t kiá»ƒu gáº¡ch chÃ©o ngÆ°á»£c

	Â« echo Â» Ä‘á»c nhá»¯ng kÃ½ tá»± thoÃ¡t nÃ y kiá»ƒu gáº¡ch chÃ©o ngÆ°á»£c:
		\a	chuÃ´ng bÃ¡o
		\b	xoÃ¡ lÃ¹i
		\c	thu há»“i káº¿t xuáº¥t thÃªm ná»¯a
		\e	kÃ½ tá»± thoÃ¡t
		\f	náº¡p giáº¥y
		\n	dÃ²ng má»›i
		\r	xuá»‘ng dÃ²ng
		\0nnn	kÃ½ tá»± cÃ³ mÃ£ ASCII NNN (1-3 chá»¯ sá»‘ bÃ¡t phÃ¢n)
		\xHH	kÃ½ tá»± 8-bit cÃ³ giÃ¡ trá»‹ HH (1-2 chá»¯ sá»‘ tháºp lá»¥c)

	Tráº¡ng thÃ¡i thoÃ¡t:
	Tráº£ láº¡i thÃ nh cÃ´ng náº¿u khÃ´ng gáº·p lá»—i ghi.		\t	khoáº£ng tab theo chiá»u ngang
		\v	khoáº£ng tab theo chiá»u dá»c
		\\	gáº¡ch chÃ©o ngÆ°á»£cBáº¡n cÃ³ thÆ° trong $_Báº¡n cÃ³ thÆ° má»›i trong $_[ Ä‘á»‘i_sá»‘ ... ][[ biá»ƒu_thá»©c ]]Â« %c Â»: cÃ¢u lá»‡nh saiÂ« %c Â»: kÃ½ tá»± Ä‘á»‹nh dáº¡ng khÃ´ng há»£p lá»‡Â« %c Â»: kÃ½ tá»± cháº¿ Ä‘á»™ tÆ°á»£ng trÆ°ng khÃ´ng há»£p lá»‡Â« %c Â»: toÃ¡n tá»« cháº¿ Ä‘á»™ tÆ°á»£ng trÆ°ng khÃ´ng há»£p lá»‡Â« %s Â»: khÃ´ng thá»ƒ há»§y tá»• há»£pÂ« %s Â»: sai Ä‘áº·t tÃªn bÃ danhÂ« %s Â»: tÃªn sÆ¡ Ä‘á»“ phÃm khÃ´ng há»£p lá»‡Â« %s Â»: thiáº¿u kÃ½ tá»± Ä‘á»‹nh dáº¡ngÂ« %s Â»: khÃ´ng pháº£i Ä‘áº·c táº£ há»£p lá»‡ cho PID hoáº·c cÃ´ng viá»‡cÂ« %s Â»: khÃ´ng pháº£i Ä‘á»“ nháºn diá»‡n há»£p lá»‡Â« %s Â»: tÃªn hÃ m khÃ´ng rÃµÄ‘á»£i dáº¥u ngoáº·c Ä‘Ã³ng Â« ) Â»Ä‘á»£i dáº¥u ngoáº·c Ä‘Ã³ng Â« ) Â», cÃ²n tÃ¬m %sÄ‘á»£i dáº¥u hai cháº¥m Â« : Â» cho biá»ƒu thá»©c Ä‘iá»u kiá»‡nadd_process: pid %5ld (%s) Ä‘Æ°á»£c Ä‘Ã¡nh dáº¥u váº«n hoáº¡t Ä‘á»™ngadd_process: tiáº¿n trÃ¬nh %5ld (%s) trong the_pipelinealias [-p] [tÃªn[=giÃ¡-trá»‹] ... ]all_local_variables: khÃ´ng cÃ³ ngá»¯ cáº£nh hÃ m á»Ÿ pháº¡m vi hiá»‡n thá»iÄ‘á»‘i sá»‘mong Ä‘á»£i Ä‘á»‘i sá»‘cáº§n thiáº¿t há»— trá»£ biáº¿n máº£ngthá» gÃ¡n cho Ä‘á»“ khÃ´ng pháº£i biáº¿nsai máº£ng in tháº¥pkiá»ƒu lá»‡nh saibá»™ káº¿t ná»‘i saisai nháº£ysai thay tháº¿: khÃ´ng cÃ³ Â« ` Â» Ä‘Ã³ng trong %ssai thay tháº¿: khÃ´ng cÃ³ Â« %s Â» Ä‘Ã³ng trong %sbash_execute_unix_command: khÃ´ng tÃ¬m tháº¥y sÆ¡ Ä‘á»“ phÃm cho cÃ¢u lá»‡nhbg [Ä‘áº·c_táº£_cÃ´ng_viá»‡c ...]bind [-lpvsPVS] [-m sÆ¡_Ä‘á»“_phÃm] [-f tÃªn_táºp_tin] [-q tÃªn] [-u tÃªn] [-r dÃ£y_phÃm] [-x dÃ£y_phÃm:lá»‡nh_trÃ¬nh_bao] [dÃ£y_phÃm:chá»©c_nÄƒng-readline hay lá»‡nh-readline]break [n]lá»—i (bug): hiá»‡u bÃ i áº¥n Ä‘á»‹nh biá»ƒu thá»©c saibuiltin [shell-builtin [arg ...]]caller [b_thá»©c]chá»‰ cÃ³ thá»ƒ Â« return Â» (trá»Ÿ vá») tá»« má»™t hÃ m hoáº·c vÄƒn lá»‡nh Ä‘Æ°á»£c gá»i tá»« nguá»“nchá»‰ cÃ³ thá»ƒ Ä‘Æ°á»£c dÃ¹ng trong má»™t hÃ mkhÃ´ng thá»ƒ cáº¥p phÃ¡t bá»™ mÃ´ táº£ táºp tin má»› cho dá»¯ liá»‡u nháºp bash tá»« fd %dkhÃ´ng thá»ƒ táº¡o táºp tin táº¡m thá»i cho tÃ i liá»‡u nÃ y: %skhÃ´ng thá»ƒ nhÃ¢n Ä‘Ã´i fd %d tá»›i fd %dkhÃ´ng thá»ƒ nhÃ¢n Ä‘Ã´i á»‘ng dáº«n Ä‘áº·t tÃªn %s thÃ nh fd %dkhÃ´ng tÃ¬m tháº¥y %s trong Ä‘á»‘i tÆ°á»£ng dÃ¹ng chung %s: %skhÃ´ng thá»ƒ táº¡o tiáº¿n trÃ¬nh con Ä‘á»ƒ thay tháº¿ lá»‡nhkhÃ´ng thá»ƒ táº¡o tiáº¿n trÃ¬nh con Ä‘á»ƒ thay tháº¿ tiáº¿n trÃ¬nhkhÃ´ng thá»ƒ táº¡o á»‘ng dáº«n Ä‘á»ƒ thay tháº¿ lá»‡nhkhÃ´ng thá»ƒ táº¡o á»‘ng dáº«n Ä‘á»ƒ thay tháº¿ tiáº¿n trÃ¬nhkhÃ´ng thá»ƒ má»Ÿ á»‘ng dáº«n Ä‘áº·t tÃªn %s Ä‘á»ƒ Ä‘á»ckhÃ´ng thá»ƒ má»Ÿ á»‘ng dáº«n Ä‘áº·t tÃªn %s Ä‘á»ƒ ghikhÃ´ng thá»ƒ má»Ÿ Ä‘á»‘i tÆ°á»£ng dÃ¹ng chung %s: %skhÃ´ng thá»ƒ chuyá»ƒn hÆ°á»›ng Ä‘áº§u vÃ o tiÃªu chuáº©n tá»« Â« /dev/null Â»: %skhÃ´ng thá»ƒ Ä‘áº·t láº¡i cháº¿ Ä‘á»™ nodelay (khÃ´ng hoÃ£n) cho fd %dkhÃ´ng thá»ƒ Ä‘á»“ng thá»i Ä‘áº·t vÃ  há»§y Ä‘áº·t cÃ¡c tÃ¹y chá»n trÃ¬nh baokhÃ´ng thá»ƒ Ä‘áº·t nhÃ³m tiáº¿n trÃ¬nh cuá»‘i cÃ¹ng (%d)khÃ´ng thá»ƒ há»§y Ä‘áº·t Ä‘á»“ng thá»i má»™t hÃ m VÃ€ má»™t biáº¿nkhÃ´ng thá»ƒ ngÆ°ngkhÃ´ng thá»ƒ ngÆ°ng trÃ¬nh bao Ä‘Äƒng nháºpkhÃ´ng thá»ƒ dÃ¹ng Â« -f Â» Ä‘á»ƒ táº¡o hÃ mchá»‰ cÃ³ thá»ƒ dÃ¹ng má»™t cá»§a nhá»¯ng tÃ¹y chá»n Â« -a Â», Â« -n Â», Â« -r Â», Â« -w Â»case Tá»ª in [MáºªU [| MáºªU]...) cÃ¡c_CÃ‚U_Lá»†NH ;;]... esacsetpgid tiáº¿n trÃ¬nh con (%ld thÃ nh %ld)command [-pVv] command [arg ...]command_substitute: khÃ´ng thá»ƒ nhÃ¢n Ä‘Ã´i á»‘ng dáº«n thÃ nh fd 1compgen [-abcdefgjksuv] [-o tÃ¹y_chá»n]  [-A hÃ nh_Ä‘á»™ng] [-G máº«u_glob] [-W danh_sÃ¡ch_tá»«]  [-F hÃ m] [-C lá»‡nh] [-X máº«u_lá»c] [-P tiá»n_tá»‘] [-S háºu_tá»‘] [tá»«]complete [-abcdefgjksuv] [-pr] [-DE] [-o tÃ¹y_chá»n] [-A hÃ nh_Ä‘á»™ng] [-G máº«u_glob] [-W danh_sÃ¡ch_tá»«]  [-F hÃ m] [-C lá»‡nh] [-X máº«u_lá»c] [-P tiá»n_tá»‘] [-S háºu_tá»‘] [tÃªn ...]completion: khÃ´ng tÃ¬m tháº¥y hÃ m Â« %s Â»compopt [-o|+o tÃ¹y_chá»n] [-DE] [tÃªn ...]Ä‘á»£i toÃ¡n tá» nhá»‹ phÃ¢n Ä‘iá»u kiá»‡ntiáº¿p tá»¥c [n]coproc [TÃŠN] command [Ä‘á»‹nh vá»‹ láº¡i]khÃ´ng tÃ¬m tháº¥y Â« /tmp Â», hÃ£y táº¡o.cprintf: Â« %c Â»: kÃ½ tá»± Ä‘á»‹nh dáº¡ng khÃ´ng há»£p lá»‡hiá»‡n thá»iÄ‘ang xoÃ¡ cÃ´ng viá»‡c bá»‹ dá»«ng cháº¡y %d vá»›i nhÃ³m tiáº¿n trÃ¬nh %lddescribe_pid: %ld: khÃ´ng cÃ³ PID (mÃ£ sá»‘ tiáº¿n trÃ¬nh) nhÆ° váºyÄ‘á»‘ng thÆ° má»¥c váº«n trá»‘ngchá»‰ má»¥c Ä‘á»‘ng thÆ° má»¥cdirs [-clpv] [+N] [-N]disown [-h] [-ar] [Ä‘áº·c_táº£_cÃ´ng_viá»‡c ...]chia cho khÃ´ngkhÃ´ng cÃ³ sáºµn chá»©c nÄƒng náº¡p Ä‘á»™ngecho [-n] [Ä‘á»‘i_sá»‘ ...]echo [-neE] [Ä‘á»‘i_sá»‘ ...]%s: tÃªn biáº¿n máº£ng váº«n trá»‘ngenable [-a] [-dnps] [-f tÃªn_táºp_tin] [tÃªn ...]gáº·p lá»—i khi láº¥y cÃ¡c thuá»™c tÃnh vá» thiáº¿t bá»‹ cuá»‘i: %sgáº·p lá»—i khi nháºp lá»i xÃ¡c Ä‘á»‹nh hÃ m cho Â« %s Â»gáº·p lá»—i khi Ä‘áº·t cÃ¡c thuá»™c tÃnh vá» thiáº¿t bá»‹ cuá»‘i: %seval [Ä‘á»‘i_sá»‘ ...]exec [-cl] [-a tÃªn] [lá»‡nh [Ä‘á»‘i_sá»‘ ...]] [chuyá»ƒn_hÆ°á»›ng ...]exit [n]Ä‘á»£i dáº¥u Ä‘Ã³ng ngoáº·c Â« ) Â»sá»‘ mÅ© nhá» hÆ¡n 0export [-fn] [tÃªn[=giÃ¡_trá»‹] ...]
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export -pÄ‘á»£i biá»ƒu thá»©cvÆ°á»£t quÃ¡ giá»›i háº¡n má»©c Ä‘á»™ Ä‘á»‡ quy cá»§a biá»ƒu thá»©csaifc [-e tÃªn-e] [-lnr] [Ä‘áº§u] [cuá»‘i]
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fc -s [máº«u=láºp_láº¡i] [lá»‡nh]fg [Ä‘áº·c_táº£_cÃ´ng_viá»‡c]bá»™ mÃ´ táº£ táºp tin á»Ÿ ngoáº¡i pháº¡m vicáº§n thiáº¿t Ä‘á»‘i sá»‘ tÃªn táºp tinfor (( exp1; exp2; exp3 )); do cÃ¡c_CÃ‚U_Lá»†NH; donefor TÃŠN [in CÃC-Tá»ª ... ;] do cÃ¡c_CÃ‚U_Lá»†NH; donetiáº¿n trÃ¬nh con Ä‘Ã£ táº¡o (PID %d) xuáº¥t hiá»‡n trong cÃ´ng viá»‡c Ä‘ang cháº¡y %dfree: Ä‘Ã£ Ä‘Æ°á»£c gá»i vá»›i Ä‘á»‘i sá»‘ khá»‘i Ä‘Ã£ giáº£i phá»ngfree: Ä‘Ã£ Ä‘Æ°á»£c gá»i vá»›i Ä‘á»‘i sá»‘ khá»‘i chÆ°a cáº¥p phÃ¡tfree: kÃch cá»¡ Ä‘oáº¡n Ä‘áº§u vÃ  cuá»‘i khÃ´ng trÃ¹ngfree: phÃ¡t hiá»‡n sá»± trÃ n ngÆ°á»£c; mh_nbytes á»Ÿ ngoáº¡i pháº¡m vichá»©c_nÄƒng tÃªn { cÃ¡c_CÃ‚U_Lá»†NH ; }
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tÃªn () { cÃ¡c_CÃ‚U_Lá»†NH ; }phiÃªn báº£n trÃ¬nh bao má»›i sáº½ Ã©p buá»™c Æ°á»›c lÆ°á»£ng dÆ°á»›i dáº¡ng má»™t hÃ m thay tháº¿ sá»‘ há»cgetcwd: khÃ´ng thá»ƒ truy cáºp thÆ° má»¥c cáº¥p trÃªngetopts chuá»—i_tÃ¹y_chá»n tÃªn [Ä‘á»‘i_sá»‘]hash [-lr] [-p Ä‘Æ°á»ng_dáº«n] [-dt] [tÃªn ...]chá»©c nÄƒng táº¡o kÃ½ hiá»‡u lá»™n xá»™n bá»‹ táº¯thelp [-dms] [máº«u ...]tÃ i liá»‡u nÃ y á»Ÿ dÃ²ng %d Ä‘á»‹nh giá»›i báº±ng káº¿t thÃºc táºp tin (mong Ä‘á»£i Â« %s Â»)history [-c] [-d hiá»‡u] [n]
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history -anrw [tÃªn_táºp_tin]
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history -ps Ä‘á»‘i_sá»‘ [Ä‘á»‘i_sá»‘...]vá»‹ trÃ lá»‹ch sá»Ä‘áº·c táº£ lá»‹ch sá»gá»i nhá»›	lá»‡nh
Ä‘á»£i Ä‘á»“ nháºn diá»‡n Ä‘áº±ng sau tÄƒng/giáº£m dáº§n sáºµnif cÃ¡c_CÃ‚U_Lá»†NH; then cÃ¡c_CÃ‚U_Lá»†NH; [ elif cÃ¡c_CÃ‚U_Lá»†NH; then cÃ¡c_CÃ‚U_Lá»†NH; ]... [ else cÃ¡c_CÃ‚U_Lá»†NH; ] fiinitialize_job_control: getpgrp bá»‹ lá»—iinitialize_job_control: ká»· luáºt dÃ²nginitialize_job_control: setpgidcÆ¡ sá»‘ (sá»‘ há»c) khÃ´ng há»£p lá»‡cÆ¡ sá»‘ khÃ´ng há»£p lá»‡sai kÃ½ tá»± %d trong chuá»—i exportstr cho %ssá»‘ tháºp lá»¥c khÃ´ng há»£p lá»‡sá»‘ khÃ´ng há»£p lá»‡sá»‘ bÃ¡t phÃ¢n khÃ´ng há»£p lá»‡sá»‘ thá»© tá»± tÃn hiá»‡u khÃ´ng há»£p lá»‡cÃ´ng viá»‡c %d Ä‘Ã£ khá»Ÿi cháº¡y mÃ  khÃ´ng cÃ³ Ä‘iá»u khiá»ƒn cÃ´ng viá»‡cÄ‘áº·c_táº£_cÃ´ng_viá»‡c [&]jobs [-lnprs] [Ä‘áº·c_táº£_cÃ´ng_viá»‡c ...]
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jobs -x lá»‡nh [cÃ¡c_Ä‘á»‘i_sá»‘]kill [-s Ä‘áº·c_táº£_tÃn_hiá»‡u | -n sá»‘_tÃn_hiá»‡u | -Ä‘áº·c_táº£_tÃn_hiá»‡u] pid | Ä‘áº·c_táº£_cÃ´ng_viá»‡c ...
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kill -l [Ä‘áº·c_táº£_tÃn_hiá»‡u]cÃ¢u lá»‡nh cuá»‘i cÃ¹ng: %s
let Ä‘á»‘i_sá»‘ [Ä‘á»‘i_sá»‘ ...]giá»›i háº¡ndÃ²ng %d:chÆ°a báºt sá»a Ä‘á»•i dÃ²nglocal [tÃ¹y_chá»n] tÃªn[=giÃ¡_trá»‹] ...Ä‘Äƒng xuáº¥t
Ä‘Äƒng xuáº¥t [n]Ä‘áº¿m vÃ²ngmake_here_document: kiá»ƒu chá»‰ dáº«n sai %dmake_local_variable: khÃ´ng cÃ³ ngá»¯ cáº£nh hÃ m á»Ÿ pháº¡m vi hiá»‡n thá»imake_redirection: chá»‰ dáº«n chuyá»ƒn hÆ°á»›ng Â« %d Â» á»Ÿ ngoáº¡i pháº¡m vimalloc (cáº¥p phÃ¡t bá»™ nhá»›): khá»‘i bá»™ nhá»› dÃ nh riÃªng trÃªn danh sÃ¡ch cÃ¡c khá»‘i cÃ²n ráº£nh bá»‹ ghi vÃ omalloc (cáº¥p phÃ¡t bá»™ nhá»›): lá»—i kháº³ng Ä‘á»‹nh: %s
mapfile [-n Ä‘áº¿m] [-O gá»‘c] [-s Ä‘áº¿m] [-t] [-u fd] [-C gá»i_ngÆ°á»£c] [-c lÆ°á»£ng] [máº£ng]chuyá»ƒn tiáº¿n trÃ¬nh sang CPU khÃ¡cthiáº¿u dáº¥u ngoáº·c Ä‘Ã³ng Â« ) Â»thiáº¿u dáº¥u ngoáº·c vá»¥ Ä‘Ã³ng Â« ] Â»thiáº¿u chá»¯ sá»‘ tháºp phÃ¢n cho \xkhÃ´ng há»— trá»£ thao tÃ¡c máº¡ngkhÃ´ng cÃ³ dáº¥u báº±ng Â« = Â» trong chuá»—i exportstr cho %sthiáº¿u Â« %c Â» Ä‘Ã³ng trong %skhÃ´ng tÃ¬m tháº¥y lá»‡nhkhÃ´ng cÃ³ chá»§ Ä‘á» trá»£ giÃºp tÆ°Æ¡ng á»©ng vá»›i Â« %s Â». HÃ£y thá» cÃ¢u lá»‡nh:
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 â€¢ man -k %s
 â€¢ info %skhÃ´ng cÃ³ Ä‘iá»u khiá»ƒn cÃ´ng viá»‡ckhÃ´ng cÃ³ Ä‘iá»u khiá»ƒn cÃ´ng viá»‡c trong trÃ¬nh bao nÃ ykhÃ´ng khá»›p: %skhÃ´ng cÃ³ thÆ° má»¥c khÃ¡ckhÃ´ng cho phÃ©p dÃ¹ng tÃ¹y chá»n thÃªm vá»›i Â« -x Â»hiá»‡n thá»i khÃ´ng thá»±c thi chá»©c nÄƒng Ä‘iá»n ná»‘tkhÃ´ng pháº£i trÃ¬nh bao Ä‘Äƒng nháºp: hÃ£y dÃ¹ng lá»‡nh Â« exit Â» (thoÃ¡t)sá»‘ bÃ¡t phÃ¢nchá»‰ cÃ³ nghÄ©a trong vÃ²ng láº·p:
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 â€¢ until	Ä‘áº¿n khilá»—i á»‘ng dáº«npop_scope: Ä‘áº§u cá»§a shell_variables (cÃ¡c biáº¿n trÃ¬nh bao) khÃ´ng pháº£i lÃ  pháº¡m vi mÃ´i trÆ°á»ng táº¡m thá»ipop_var_context: Ä‘áº§u cá»§a shell_variables (cÃ¡c biáº¿n trÃ¬nh bao) khÃ´ng pháº£i lÃ  ngá»¯ cáº£nh hÃ mpop_var_context: khÃ´ng cÃ³ ngá»¯ cáº£nh global_variables (cÃ¡c biáº¿n toÃ n cá»¥c)popd [-n] [+N | -N]sáº¯p bá»‹ cÃºp Ä‘iá»‡n Ä‘á»™t ngá»™tprint_command: bá»™ káº¿t ná»‘i sai Â« %d Â»printf [-v biáº¿n] Ä‘á»‹nh_dáº¡ng [Ä‘á»‘i_sá»‘]progcomp_insert: %s: NULL COMPSPEClá»—i láºp trÃ¬nhpushd [-n] [+N | -N | tmá»¥c]pwd [-LP]read [-ers] [-a máº£ng] [-d giá»›i_háº¡n] [-i vÄƒn_báº£n] [-n sá»‘_kÃ½_tá»±] [-N sá»‘_kÃ½_tá»±] [-p nháº¯c] [-t thá»i_háº¡n] [-u fd] [tÃªn ...]lá»—i Ä‘á»c: %d: %sreadarray [-n Ä‘áº¿m] [-O gá»‘c] [-s Ä‘áº¿m] [-t] [-u fd] [-C gá»i_ngÆ°á»£c] [-c lÆ°á»£ng] [máº£ng]realloc: Ä‘Ã£ Ä‘Æ°á»£c gá»i vá»›i Ä‘á»‘i sá»‘ khá»‘i chÆ°a cáº¥p phÃ¡trealloc: kÃch cá»¡ Ä‘oáº¡n Ä‘áº§u vÃ  cuá»‘i khÃ´ng trÃ¹ngrealloc: phÃ¡t hiá»‡n sá»± trÃ n ngÆ°á»£c; mh_nbytes á»Ÿ ngoáº¡i pháº¡m vitrÃ¡n ngÆ°á»£c Ä‘á»‘ng Ä‘á»‡ quygáº·p lá»—i chuyá»ƒn hÆ°á»›ng nÃªn khÃ´ng thá»ƒ nhÃ¢n Ä‘Ã´i fdregister_alloc: %p Ä‘Ã£ cÃ³ trong báº£ng nhÆ° Ä‘Æ°á»£c cáº¥p phÃ¡t ?
register_alloc: báº£ng cáº¥p phÃ¡t Ä‘áº§y vá»›i FIND_ALLOC?
register_free: %p Ä‘Ã£ cÃ³ trong báº£ng nhÆ° cÃ²n ráº£nh ?
bá»‹ háº¡n cháº¿return [n]run_pending_traps: giÃ¡ trá»‹ sai trong danh sÃ¡ch trap_list[%d]: %prun_pending_traps: bá»™ xá» lÃ½ tÃn hiá»‡u lÃ  SIG_DFL, Ä‘ang gá»i láº¡i %d (%s) cho mÃ¬nhsave_bash_input: Ä‘Ã£ cÃ³ bá»™ Ä‘á»‡m cho fd má»›i %dselect TÃŠN [in CÃC-Tá»ª ... ;] do cÃ¡c_CÃ‚U_Lá»†NH; donesetlocale: %s: khÃ´ng thá»ƒ chuyá»ƒn Ä‘á»•i miá»n Ä‘á»‹a phÆ°Æ¡ng (%s)setlocale: %s: khÃ´ng thá»ƒ chuyá»ƒn Ä‘á»•i miá»n Ä‘á»‹a phÆ°Æ¡ng (%s): %ssetlocale: LC_ALL: khÃ´ng thá»ƒ chuyá»ƒn Ä‘á»•i miá»n Ä‘á»‹a phÆ°Æ¡ng (%s)setlocale: LC_ALL: khÃ´ng thá»ƒ chuyá»ƒn Ä‘á»•i miá»n Ä‘á»‹a phÆ°Æ¡ng (%s): %scáº¥p trÃ¬nh bao (%d) quÃ¡ cao nÃªn Ä‘áº·t láº¡i thÃ nh 1shift [n]Ä‘áº¿m dá»ishopt [-pqsu] [-o] [tÃ¹y_chá»n ...]sigprocmask: %d: thao tÃ¡c khÃ´ng há»£p lá»‡nguá»“n tÃªn_táºp_tin [Ä‘á»‘i_sá»‘ ...]start_pipeline: pgrp pipengÆ°ng [-f]lá»—i cÃº phÃ¡pgáº·p lá»—i cÃº phÃ¡p trong biá»ƒu thá»©c Ä‘iá»u kiá»‡ngáº·p lá»—i cÃº phÃ¡p trong biá»ƒu thá»©c Ä‘iá»u kiá»‡n: hiá»‡u bÃ i báº¥t thÆ°á»ng Â« %s Â»lá»—i cÃº phÃ¡p trong biá»ƒu thá»©cgáº·p lá»—i cÃº phÃ¡p gáº§n Â« %s Â»gáº·p lá»—i cÃº phÃ¡p á»Ÿ gáº§n hiá»‡u bÃ i báº¥t thÆ°á»ng Â« %s Â»lá»—i cÃº phÃ¡p: `((%s))'lá»—i cÃº phÃ¡p: dáº¥u cháº¥m pháº©y Â« ; Â» báº¥t thÆ°á»nglá»—i cÃº phÃ¡p: cáº§n thiáº¿t biá»ƒu thá»©c sá»‘ há»clá»—i cÃº phÃ¡p: toÃ¡n tá» sá»‘ há»c khÃ´ng há»£p lá»‡lá»—i cÃº phÃ¡p: Ä‘á»£i toÃ¡n háº¡nglá»—i cÃº phÃ¡p: káº¿t thÃºc táºp tin báº¥t thÆ°á»nghá»‡ thá»‘ng sáº¯p sá»¥p Ä‘á»•test [b_thá»©c]thá»i háº¡n [-p] á»‘ng dáº«nláº§nquÃ¡ nhiá»u Ä‘á»‘i sá»‘trap [-lp] [[Ä‘á»‘i_sá»‘] Ä‘áº·c_táº£_tÃn_hiá»‡u ...]trap_handler: tÃn hiá»‡u sai %dÄ‘Ãºngtype [-afptP] tÃªn [tÃªn ...]ulimit [-SHacdefilmnpqrstuvx] [giá»›i_háº¡n]umask [-p] [-S] [cháº¿_Ä‘á»™]unalias [-a] tÃªn [tÃªn ...]gáº·p káº¿t thÃºc táºp tin báº¥t thÆ°á»ng trong khi tÃ¬m Â« ]] Â»gáº·p káº¿t thÃºc táºp tin báº¥t thÆ°á»ng trong khi tÃ¬m Â« %c Â» tÆ°Æ¡ng á»©nggáº·p káº¿t thÃºc táºp tin báº¥t thÆ°á»ng trong khi tÃ¬m dáº¥u ngoáº·c Ä‘Ã³ng Â« ) Â» tÆ°Æ¡ng á»©ngÄ‘á»‘i sá»‘ báº¥t thÆ°á»ng Â« %s Â» tá»›i toÃ¡n tá» nhá»‹ phÃ¢n Ä‘iá»u kiá»‡nÄ‘á»‘i sá»‘ báº¥t thÆ°á»ng Â« %s Â» tá»›i toÃ¡n tá» nguyÃªn phÃ¢n Ä‘iá»u kiá»‡nÄ‘á»‘i sá»‘ báº¥t thÆ°á»ng tá»›i toÃ¡n tá» nhá»‹ phÃ¢n Ä‘iá»u kiá»‡nÄ‘á»‘i sá»‘ báº¥t thÆ°á»ng tá»›i toÃ¡n tá» nguyÃªn phÃ¢n Ä‘iá»u kiá»‡ngáº·p hiá»‡u bÃ i báº¥t thÆ°á»ng Â« %d Â» trong cÃ¢u lá»‡nh Ä‘iá»u kiá»‡ngáº·p hiá»‡u bÃ i báº¥t thÆ°á»ng Â« %c Â» trong cÃ¢u lá»‡nh Ä‘iá»u kiá»‡ngáº·p hiá»‡u bÃ i báº¥t thÆ°á»ng Â« %s Â» trong cÃ¢u lá»‡nh Ä‘iá»u kiá»‡nhiá»‡u bÃ i báº¥t thÆ°á»ng Â« %s Â» cÃ²n Ä‘á»£i toÃ¡n tá» nhá»‹ phÃ¢n Ä‘iá»u kiá»‡ngáº·p hiá»‡u bÃ i báº¥t thÆ°á»ng Â« %s Â», cÃ²n mong Ä‘á»£i dáº¥u ngoáº·c Ä‘Ã³ng Â« ) Â»khÃ´ng rÃµlá»—i lá»‡nh khÃ´ng rÃµunset [-f] [-v] [tÃªn ...]until cÃ¡c_CÃ‚U_Lá»†NH; do cÃ¡c_CÃ‚U_Lá»†NH; donecÆ¡ sá»‘ cÃ³ giÃ¡ trá»‹ quÃ¡ lá»›nbiáº¿n â€” tÃªn vÃ  nghÄ©a cá»§a má»™t sá»‘ biáº¿n trÃ¬nh baoÄ‘á»£i [id]Ä‘á»£i [pid]wait: pid %ld khÃ´ng pháº£i lÃ  tiáº¿n trÃ¬nh con cá»§a trÃ¬nh bao nÃ ywait_for: KhÃ´ng cÃ³ má»¥c ghi vá» tiáº¿n trÃ¬nh %ldwait_for_job: cÃ´ng viá»‡c %d bá»‹ dá»«ng cháº¡ywaitchld: Ä‘ang báºt WNOHANG Ä‘á»ƒ trÃ¡nh bá»‹ cháº·n vÃ´ háº¡ncáº£nh bÃ¡o :cáº£nh bÃ¡o : %s: %scáº£nh bÃ¡o: tÃ¹y chá»n Â« -C Â» cÃ³ láº½ khÃ´ng hoáº¡t Ä‘á»™ng nhÆ° mong Ä‘á»£icáº£nh bÃ¡o: tÃ¹y chá»n Â« -F Â» cÃ³ láº½ khÃ´ng hoáº¡t Ä‘á»™ng nhÆ° mong Ä‘á»£iwhile cÃ¡c_CÃ‚U_Lá»†NH; do cÃ¡c_CÃ‚U_Lá»†NH; donelá»—i ghi: %sxtrace fd (%d) != fileno xtrace fp (%d)xtrace_set: %d: sai Ä‘áº·t bá»™ mÃ´ táº£ táºp tinxtrace_set: con trá» táºp tin NULL (vÃ´ giÃ¡ trá»‹){ cÃ¡c_CÃ‚U_Lá»†NH ; }
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