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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 limitChange the shell working directory. Change the current directory to DIR. The default DIR is the value of the HOME shell variable. The variable CDPATH defines the search path for the directory containing DIR. Alternative directory names in CDPATH are separated by a colon (:). A null directory name is the same as the current directory. If DIR begins with a slash (/), then CDPATH is not used. If the directory is not found, and the shell option `cdable_vars' is set, the word is assumed to be a variable name. If that variable has a value, its value is used for DIR. Options: -L force symbolic links to be followed: resolve symbolic links in DIR after processing instances of `..' -P use the physical directory structure without following symbolic links: resolve symbolic links in DIR before processing instances of `..' -e if the -P option is supplied, and the current working directory cannot be determined successfully, exit with a non-zero status -@ on systems that support it, present a file with extended attributes as a directory containing the file attributes The default is to follow symbolic links, as if `-L' were specified. `..' is processed by removing the immediately previous pathname component back to a slash or the beginning of DIR. Exit Status: Returns 0 if the directory is changed, and if $PWD is set successfully when -P is used; non-zero otherwise.Child 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. ContinueCreate 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: The coproc command returns an exit status of 0.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, a variable assignment 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 specifying 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 position OFFSET. Negative offsets count back from the end of the history list -a append history lines from this session to the history file -n read all history lines not already read from the history file and append them to the history list -r read the history file and append the contents to the history list -w write the current history to the history file -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 lists 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 expressions. Evaluate each ARG as an arithmetic expression. Evaluation is done in fixed-width integers with no check for overflow, though division by 0 is trapped and flagged as an error. The following list of operators is grouped into levels of equal-precedence operators. The levels are listed in order of decreasing precedence. id++, id-- variable post-increment, post-decrement ++id, --id variable pre-increment, pre-decrement -, + unary minus, plus !, ~ logical and bitwise negation ** exponentiation *, /, % multiplication, division, remainder +, - addition, subtraction <<, >> left and right bitwise shifts <=, >=, <, > comparison ==, != equality, inequality & bitwise AND ^ bitwise XOR | bitwise OR && logical AND || logical OR expr ? expr : expr conditional operator =, *=, /=, %=, +=, -=, <<=, >>=, &=, ^=, |= assignment Shell variables are allowed as operands. The name of the variable is replaced by its value (coerced to a fixed-width integer) within an expression. The variable need not have its integer attribute turned on to be used in an expression. Operators are evaluated in order of precedence. Sub-expressions in parentheses are evaluated first and may override the precedence rules above. Exit Status: If the last ARG evaluates to 0, let returns 1; let returns 0 otherwise.Evaluate conditional expression. Exits with a status of 0 (true) or 1 (false) depending on the evaluation of EXPR. Expressions may be unary or binary. Unary expressions are often used to examine the status of a file. There are string operators and numeric comparison operators as well. The behavior of test depends on the number of arguments. Read the bash manual page for the complete specification. File operators: -a FILE True if file exists. -b FILE True if file is block special. -c FILE True if file is character special. -d FILE True if file is a directory. -e FILE True if file exists. -f FILE True if file exists and is a regular file. -g FILE True if file is set-group-id. -h FILE True if file is a symbolic link. -L FILE True if file is a symbolic link. -k FILE True if file has its `sticky' bit set. -p FILE True if file is a named pipe. -r FILE True if file is readable by you. -s FILE True if file exists and is not empty. -S FILE True if file is a socket. -t FD True if FD is opened on a terminal. -u FILE True if the file is set-user-id. -w FILE True if the file is writable by you. -x FILE True if the file is executable by you. -O FILE True if the file is effectively owned by you. -G FILE True if the file is effectively owned by your group. -N FILE True if the file has been modified since it was last read. FILE1 -nt FILE2 True if file1 is newer than file2 (according to modification date). FILE1 -ot FILE2 True if file1 is older than file2. FILE1 -ef FILE2 True if file1 is a hard link to file2. String operators: -z STRING True if string is empty. -n STRING STRING True if string is not empty. STRING1 = STRING2 True if the strings are equal. STRING1 != STRING2 True if the strings are not equal. STRING1 < STRING2 True if STRING1 sorts before STRING2 lexicographically. STRING1 > STRING2 True if STRING1 sorts after STRING2 lexicographically. Other operators: -o OPTION True if the shell option OPTION is enabled. -v VAR True if the shell variable VAR is set. -R VAR True if the shell variable VAR is set and is a name reference. ! EXPR True if expr is false. EXPR1 -a EXPR2 True if both expr1 AND expr2 are true. EXPR1 -o EXPR2 True if either expr1 OR expr2 is true. arg1 OP arg2 Arithmetic tests. OP is one of -eq, -ne, -lt, -le, -gt, or -ge. Arithmetic binary operators return true if ARG1 is equal, not-equal, less-than, less-than-or-equal, greater-than, or greater-than-or-equal than ARG2. Exit Status: Returns success if EXPR evaluates to true; fails if EXPR evaluates to false or an invalid argument is given.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 exceptionFormats and prints ARGUMENTS under control of the FORMAT. Options: -v var assign the output to shell variable VAR rather than display it on the standard output FORMAT is a character string which contains three types of objects: plain characters, which are simply copied to standard output; character escape sequences, which are converted and copied to the standard output; and format specifications, each of which causes printing of the next successive argument. In addition to the standard format specifications described in printf(1), printf interprets: %b expand backslash escape sequences in the corresponding argument %q quote the argument in a way that can be reused as shell input %(fmt)T output the date-time string resulting from using FMT as a format string for strftime(3) The format is re-used as necessary to consume all of the arguments. If there are fewer arguments than the format requires, extra format specifications behave as if a zero value or null string, as appropriate, had been supplied. Exit Status: Returns success unless an invalid option is given or a write or assignment error occurs.GNU bash, version %s (%s) GNU bash, version %s-(%s) GNU long options: General help using GNU software: 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 readyINFORM: Illegal instructionInformation requestInterruptKilledLicense GPLv3+: GNU GPL version 3 or later 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 or functions, depending on whether or not the -f option is given An argument of `--' disables further option processing. Exit Status: Returns success unless an invalid option is given or NAME is invalid.Modify or display completion options. Modify the completion options for each NAME, or, if no NAMEs are supplied, the completion currently being executed. If no OPTIONs are given, print the completion options for each NAME or the current completion specification. Options: -o option Set completion option OPTION for each NAME -D Change options for the "default" command completion -E Change options for the "empty" command completion -I Change options for completion on the initial word Using `+o' instead of `-o' turns off the specified option. Arguments: Each NAME refers to a command for which a completion specification must have previously been defined using the `complete' builtin. If no NAMEs are supplied, compopt must be called by a function currently generating completions, and the options for that currently-executing completion generator are modified. Exit Status: Returns success unless an invalid option is supplied or NAME does not have a completion specification defined.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 setPrint 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 -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 within TIMEOUT seconds. The value of the TMOUT variable is the default timeout. TIMEOUT may be a fractional number. If TIMEOUT is 0, read returns immediately, without trying to read any data, returning 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 (in which case it's greater than 128), a variable assignment error occurs, 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'.Read lines from the standard input into an indexed array variable. Read lines from the standard input into the indexed array variable ARRAY, or from file descriptor FD if the -u option is supplied. The variable MAPFILE is the default ARRAY. Options: -d delim Use DELIM to terminate lines, instead of newline -n count Copy at most COUNT lines. If COUNT is 0, all lines are copied -O origin Begin assigning to ARRAY at index ORIGIN. The default index is 0 -s count Discard the first COUNT lines read -t Remove a trailing DELIM from each line read (default newline) -u fd Read lines from file descriptor FD instead of the standard input -C callback Evaluate CALLBACK each time QUANTUM lines are read -c quantum Specify the number of lines read between each call to CALLBACK Arguments: ARRAY Array variable name to use for file data If -C is supplied without -c, the default quantum is 5000. When CALLBACK is evaluated, it is supplied the index of the next array element to be assigned and the line to be assigned to that element as additional arguments. If not supplied with an explicit origin, mapfile will clear ARRAY before assigning to it. Exit Status: Returns success unless an invalid option is given or ARRAY is readonly or not an indexed array.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 as 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 $filename"; this extra information can be used to provide a stack trace. The value of EXPR indicates how many call frames to go back before the current one; the top frame is frame 0. Exit Status: Returns 0 unless the shell is not executing a shell function or EXPR is invalid.RunningSegmentation faultSelect words from a list and execute commands. The WORDS are expanded, generating a list of words. The set of expanded words is printed on the standard error, each preceded by a number. If `in WORDS' is not present, `in "$@"' 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 -L synonym for -l 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. -X List key sequences bound with -x and associated commands in a form that can be reused as input. 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 each supplied OPTNAME, or all shell options if no OPTNAMEs are given, 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 or unset values of shell options and positional parameters. Change the value of shell attributes and positional parameters, or display the names and values of shell variables. Options: -a Mark variables which are modified or created for export. -b Notify of job termination immediately. -e Exit immediately if a command exits with a non-zero status. -f Disable file name generation (globbing). -h Remember the location of commands as they are looked up. -k All assignment arguments are placed in the environment for a command, not just those that precede the command name. -m Job control is enabled. -n Read commands but do not execute them. -o option-name Set the variable corresponding to option-name: allexport same as -a braceexpand same as -B emacs use an emacs-style line editing interface errexit same as -e errtrace same as -E functrace same as -T hashall same as -h histexpand same as -H history enable command history ignoreeof the shell will not exit upon reading EOF interactive-comments allow comments to appear in interactive commands keyword same as -k monitor same as -m noclobber same as -C noexec same as -n noglob same as -f nolog currently accepted but ignored notify same as -b nounset same as -u onecmd same as -t physical same as -P pipefail the return value of a pipeline is the status of the last command to exit with a non-zero status, or zero if no command exited with a non-zero status posix change the behavior of bash where the default operation differs from the Posix standard to match the standard privileged same as -p verbose same as -v vi use a vi-style line editing interface xtrace same as -x -p Turned on whenever the real and effective user ids do not match. Disables processing of the $ENV file and importing of shell functions. Turning this option off causes the effective uid and gid to be set to the real uid and gid. -t Exit after reading and executing one command. -u Treat unset variables as an error when substituting. -v Print shell input lines as they are read. -x Print commands and their arguments as they are executed. -B the shell will perform brace expansion -C If set, disallow existing regular files to be overwritten by redirection of output. -E If set, the ERR trap is inherited by shell functions. -H Enable ! style history substitution. This flag is on by default when the shell is interactive. -P If set, do not resolve symbolic links when executing commands such as cd which change the current directory. -T If set, the DEBUG and RETURN traps are inherited by shell functions. -- Assign any remaining arguments to the positional parameters. If there are no remaining arguments, the positional parameters are unset. - Assign any remaining arguments to the positional parameters. The -x and -v options are turned off. Using + rather than - causes these flags to be turned off. The flags can also be used upon invocation of the shell. The current set of flags may be found in $-. The remaining n ARGs are positional parameters and are assigned, in order, to $1, $2, .. $n. If no ARGs are given, all shell variables are printed. Exit Status: Returns success unless an invalid option is given.Set variable values and attributes. A synonym for `declare'. 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 %dStoppedStopped (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.Trap signals and other events. Defines and activates handlers to be run when the shell receives signals or other conditions. ARG is a command to be read and executed when the shell receives the signal(s) SIGNAL_SPEC. If ARG is absent (and a single SIGNAL_SPEC is supplied) or `-', each specified signal is reset to its original value. If ARG is the null string each SIGNAL_SPEC is ignored by the shell and by the commands it invokes. If a SIGNAL_SPEC is EXIT (0) ARG is executed on exit from the shell. If a SIGNAL_SPEC is DEBUG, ARG is executed before every simple command. If a SIGNAL_SPEC is RETURN, ARG is executed each time a shell function or a script run by the . or source builtins finishes executing. A SIGNAL_SPEC of ERR means to execute ARG each time a command's failure would cause the shell to exit when the -e option is enabled. If no arguments are supplied, trap prints the list of commands associated with each signal. Options: -l print a list of signal names and their corresponding numbers -p display the trap commands associated with each SIGNAL_SPEC Each SIGNAL_SPEC is either a signal name in or a signal number. Signal names are case insensitive and the SIG prefix is optional. A signal may be sent to the shell with "kill -signal $$". Exit Status: Returns success unless a SIGSPEC is invalid or an invalid option is given.Type `%s -c "help set"' for more information about shell options. Type `%s -c help' for more information about shell builtin commands. 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 -n treat each NAME as a name reference and unset the variable itself rather than the variable it references 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 process completion and return exit status. Waits for each process specified by a PID and reports its termination status. If PID is not given, waits for all currently active child processes, and the return status is zero. PID must be a process ID. Exit Status: Returns the status of the last PID; fails if PID 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, separated by a single space character and followed by a newline, on the standard output. 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 \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 \uHHHH the Unicode character whose value is the hexadecimal value HHHH. HHHH can be one to four hex digits. \UHHHHHHHH the Unicode character whose value is the hexadecimal value HHHHHHHH. HHHHHHHH can be one to eight 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`%c': invalid time format specification`%s': cannot unbind`%s': invalid alias name`%s': invalid keymap name`%s': invalid variable name for name reference`%s': is a special builtin`%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 alivealias [-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 home page: bash_execute_unix_command: cannot find keymap for commandbg [job_spec ...]bind [-lpsvPSVX] [-m keymap] [-f filename] [-q name] [-u name] [-r keyseq] [-x keyseq:shell-command] [keyseq:readline-function or readline-command]brace expansion: cannot allocate memory for %sbrace expansion: failed to allocate memory for %u elementsbrace expansion: failed to allocate memory for `%s'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 gid to %d: effective gid %dcannot set terminal process group (%d)cannot set uid to %d: effective uid %dcannot simultaneously unset a function and a variablecannot start debugger; debugging mode disabledcannot suspendcannot suspend a login shellcannot use `-f' to make functionscannot use more than one of -anrwcase WORD in [PATTERN [| PATTERN]...) COMMANDS ;;]... esaccd [-L|[-P [-e]] [-@]] [dir]child setpgid (%ld to %ld)command [-pVv] command [arg ...]command substitution: ignored null byte in inputcommand_substitute: cannot duplicate pipe as fd 1completion: function `%s' not foundcompopt [-o|+o option] [-DEI] [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 ... | pid ...]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 ...]eval: maximum eval nesting level exceeded (%d)execute_coproc: coproc [%d:%s] still existsexit [n]expected `)'exponent less than 0export [-fn] [name[=value] ...] or export -pexpression expectedexpression recursion level exceededfc [-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 %dformat parsing problem: %sfree: 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 directorieshash [-lr] [-p pathname] [-dt] [name ...]hashing disabledhelp [-dms] [pattern ...]help not available in this versionhere-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: no job control in backgroundinitialize_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 enabledload function for %s returns failure (%d): not loadedlocal [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 [-d delim] [-n count] [-O origin] [-s count] [-t] [-u fd] [-C callback] [-c quantum] [array]maximum here-document count exceededmigrate process to another CPUmissing `)'missing `]'missing hex digit for \xmissing unicode digit for \%cnetwork 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'null directoryoctal 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 imminentpretty-printing mode ignored in interactive shellsprint_command: bad connector `%d'printf [-v var] format [arguments]progcomp_insert: %s: NULL COMPSPECprogrammable_completion: %s: possible retry loopprogramming 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 [-d delim] [-n count] [-O origin] [-s count] [-t] [-u fd] [-C callback] [-c quantum] [array]readonly [-aAf] [name[=value] ...] or readonly -prealloc: 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; doneset [-abefhkmnptuvxBCHP] [-o option-name] [--] [arg ...]setlocale: %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 1shell_getc: shell_input_line_size (%zu) exceeds SIZE_MAX (%lu): line truncatedshift [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 in variable assignmentsyntax 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] pipelinetoo many argumentstrap [-lp] [[arg] signal_spec ...]trap handler: maximum trap handler level exceeded (%d)trap_handler: bad signal %dtype [-afptP] name [name ...]ulimit [-SHabcdefiklmnpqrstuvxPT] [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] [-n] [name ...]until COMMANDS; do COMMANDS; donevalue too great for basevariables - Names and meanings of some shell variableswait [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 5.0 Report-Msgid-Bugs-To: POT-Creation-Date: 2020-11-28 12:51-0500 PO-Revision-Date: 2019-01-08 15:20-0500 Last-Translator: Boyuan Yang <073plan@gmail.com> Language-Team: Chinese (simplified) Language: zh_CN MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Bugs: Report translation errors to the Language-Team address. Plural-Forms: nplurals=1; plural=0; X-Generator: Poedit 2.2  等待输入超时：自动注销 -%s 或 -o <选项> -irsD 或 -c <命令> 或 -O (仅适åˆè°ƒç”¨) malloc: %s:%d：断言已修补 (工作目录: %s) (核心已转储)è¡Œ$%s：无法这样赋值%c%c: 无效的选项%d: 无效的文件æ述符: %s%s å¯ä»¥è¢«è°ƒç”¨ï¼Œé€šè¿‡ %s çš„ exportstr 为空%s 是 %s %s 是函数 %s 是 shell 内建 %s 是 shell 关键字 %s 是特殊 shell 内建 %s 是“%sâ€çš„别å %s 已被录入哈希表 (%s) %s 未与任何键绑定。 %s 越界%s%s%s：%s (错误符å·æ˜¯ "%s")%s：%s%s：%s 越界%s：%s：解释器错误%s：%s：无法作为文件打开%s：%s：兼容版本数值越界%s：%s：追踪文件æ述符的值无效%s：%s：为关è”数组赋值时必须使用下标%s：%s:%dï¼šæ— æ³•åˆ†é… %lu 字节%s：%s:%dï¼šæ— æ³•åˆ†é… %lu 字节 (å·²åˆ†é… %lu 字节)%s：是一个目录%s：模糊的任务声明%s：模糊的é‡å®šå‘%s：å‚数必须是进程或任务 ID%s：将整数赋值给å称引用%s：错误的网络路径声明%s：错误的替æ¢%s：需è¦äºŒå…ƒè¡¨è¾¾å¼%sï¼šæ— æ³•åˆ†é… %lu 字节%sï¼šæ— æ³•åˆ†é… %lu 字节 (å·²åˆ†é… %lu 字节)%s：无法将文件æ述符赋值给å˜é‡%s：无法将链表赋值给数组æˆå‘˜%s：无法为éžæ•°å­—的索引赋值%s：无法将关è”数组转化为索引数组%s：无法将索引数组转化为关è”数组%s：无法创建: %s%s：无法删除: %s%s：无法以这ç§æ–¹å¼é”€æ¯æ•°ç»„å˜é‡%s：无法执行二进制文件%s：无法执行二进制文件: %s%s：无法执行: %s%s：无法导出%sï¼šæ— æ³•èŽ·å– limit 值: %s%s：无法修改 limit 值: %s%s：无法打开临时文件: %s%s：无法打开: %s%s：无法覆盖已存在的文件%s：无法读å–: %s%s：无法å–消设定%s：无法å–消设定: åªè¯» %s%s：循环å˜é‡å引用%s：未找到命令%s：获å–当å‰ç›®å½•æ—¶å‡ºé”™: %s：%s %s：表达å¼é”™è¯¯ %s：文件太大%s：文件未找到%s：第一个éžç©ºå­—符ä¸æ˜¯â€œ"â€%s：哈希表为空 %s：历å²æ‰©å±•å¤±è´¥%s：未知主机%s：éžæ³•é€‰é¡¹ -- %c %s：inlib 失败%s：需è¦æ•´æ•°è¡¨è¾¾å¼%s：无效的动作å%s：无效å‚æ•°%s：无效的数组基数%s：无效的关è”数组键%s：无效的回调é‡å­%s：无效的文件æ述符声明%s：无效的间接展开%s：无效的 limit å‚æ•°%s：无效的行数%s：无效选项%s：无效的选项å%s：无效的æœåŠ¡%s：无效的 shell 选项å%s：无效的信å·å£°æ˜Ž%s：无效的超时声明%s：无效时间戳%s：无效的å˜é‡å%s：无效的引用å˜é‡å%s：是一个目录%s：任务 %d 已在åŽå°%s：任务已ç»ç»ˆæ­¢%s：行 %d: %s：超出最大函数嵌套层数 (%d)%s：超出最大 source 嵌套层数 (%d)%s：缺少冒å·åˆ†éš”符%s：ä¸å…许å称引用å˜é‡å¼•ç”¨è‡ªèº«%s：没有补全声明%s：无任务控制%s：无此任务%s：ä¸æ˜¯å‡½æ•°%s：ä¸æ˜¯å¸¸è§„文件%s：ä¸æ˜¯ shell 内建%s：ä¸æ˜¯æ•°ç»„å˜é‡%s：ä¸æ˜¯ä¸€ä¸ªç´¢å¼•æ•°ç»„%s：未以动æ€æ–¹å¼åŠ è½½%s：未找到%s：需è¦æ•°å­—å‚æ•°%s：选项需è¦ä¸€ä¸ªå‚æ•°%s：选项需è¦ä¸€ä¸ªå‚æ•° -- %c %s：å‚数未设置%s：å‚数为空或未设置%s：引å·å†…çš„å¤åˆæ•°ç»„赋值已被弃用%s：åªè¯»å‡½æ•°%s：åªè¯»å˜é‡%s：引用å˜é‡ä¸èƒ½ä¸ºæ•°ç»„%s：正在移除å称引用属性%s：å—é™çš„%s：å—é™çš„: 无法é‡å®šå‘输出%s：å—é™çš„: 无法在命令å中使用 `/'%s：å­ä¸²è¡¨è¾¾å¼ < 0%s：需è¦ä¸€å…ƒè¡¨è¾¾å¼%s：未绑定的å˜é‡%s：用法：%s：å˜é‡ä¸å¯èµ‹å€¼(( è¡¨è¾¾å¼ ))（核心已转储）(当å‰å·¥ä½œç›®å½•ï¼š%s) . 文件å [å‚æ•°]没有网络时ä¸æ”¯æŒ /dev/(tcp|udp)/host/port/tmp 必须为有效的目录å<无当å‰ç›®å½•>放弃指令中止...将目录添加到栈中。 将目录添加到目录栈顶，或ç€æ—‹è½¬æ ˆç›´åˆ°å½“å‰å·¥ä½œç›®å½•æˆä¸º 新的栈顶。ä¸å¸¦å‚数时，交æ¢æ ˆé¡¶çš„两个目录。 选项： -n 抑制添加目录至栈时通常的改å˜ç›®å½•æ“作，从而仅对栈 进行æ“作。 å‚数： +N 旋转栈从而第 N 个目录 (`dirs' 显示的列表中左起，从零开始) 将移动到栈顶。 -N 旋转栈从而第 N 个目录 (`dirs' 显示的列表中å³èµ·ï¼Œä»Žé›¶å¼€å§‹) 将移动到栈顶。 dir å°† DIR 目录添加到栈顶，并且使其æˆä¸ºå½“å‰å·¥ä½œç›®å½•ã€‚ `dirs' 内建显示目录栈。 退出状æ€ï¼š 返回æˆåŠŸï¼Œé™¤éžä½¿ç”¨äº†æ— æ•ˆçš„å‚数或者目录转æ¢å¤±è´¥ã€‚在目录栈顶部加入一个目录，或者论询 目录栈，是当å‰å·¥ä½œç›®å½•æˆä¸ºæ–°çš„栈顶 ä¸å¸¦å‚数时，交æ¢æ ˆé¡¶çš„两个目录。 选项： -n 抑制增加栈中目录时通常的改å˜ç›®å½•çš„æ“作， 从而åªè¿›è¡Œæ ˆæ“作。 å‚数： +N 轮转栈使得第N个目录(`dirs' çš„ 输出列表中左起，从0开始) å‡è‡³æ ˆé¡¶ã€‚ -N 轮转栈使得第N个目录(`dirs' çš„ 输出列表中å³èµ·ï¼Œä»Ž0开始) å‡è‡³æ ˆé¡¶ dir 添加目录至栈顶，并 使其æˆä¸ºæ–°çš„当å‰å·¥ä½œç›®å½•ã€‚ `dirs' 内建命令显示目录栈.报警(分æž)报警(虚拟)闹钟算术 for 循环。 等价于 (( EXP1 )) while (( EXP2 )); do 命令们 (( EXP3 )) done EXP1ã€EXP2 å’Œ EXP3 都是算术表达å¼ã€‚如果çœç•¥ä»»ä½•è¡¨è¾¾å¼ï¼Œ 则等åŒäºŽä½¿ç”¨äº†ä¼°å€¼ä¸º1的表达å¼ã€‚ 退出状æ€ï¼š 返回最åŽæ‰§è¡Œçš„命令的状æ€ã€‚断点追踪/陷阱错误的系统调用伪信å·ç®¡é“破裂总线错误CPU é™åˆ¶æ”¹å˜ shell 工作目录。 改å˜å½“å‰ç›®å½•è‡³ DIR 目录。默认的 DIR 目录是 shell å˜é‡ HOME 的值。 å˜é‡ CDPATH 定义了å«æœ‰ DIR 的目录的æœç´¢è·¯å¾„，其中ä¸åŒçš„目录åç§°ç”±å†’å· (:)分隔。 一个空的目录å称表示当å‰ç›®å½•ã€‚如果è¦åˆ‡æ¢åˆ°çš„ DIR ç”±æ–œæ  (/) 开头，则 CDPATH ä¸ä¼šç”¨ä¸Šå˜é‡ã€‚ 如果路径找ä¸åˆ°ï¼Œå¹¶ä¸” shell 选项 `cdable_vars' 被设定，则å‚æ•°è¯è¢«å‡å®šä¸ºä¸€ä¸ª å˜é‡å。如果该å˜é‡æœ‰å€¼ï¼Œåˆ™å®ƒçš„值被当作 DIR 目录。 选项： -L 强制跟éšç¬¦å·é“¾æŽ¥: åœ¨å¤„ç† `..' 之åŽè§£æž DIR 中的符å·é“¾æŽ¥ã€‚ -P 使用物ç†ç›®å½•ç»“构而ä¸è·Ÿéšç¬¦å·é“¾æŽ¥: åœ¨å¤„ç† `..' 之å‰è§£æž DIR 中的符å·é“¾æŽ¥ã€‚ -e 如果使用了 -P å‚数，但ä¸èƒ½æˆåŠŸç¡®å®šå½“å‰å·¥ä½œç›®å½•æ—¶ï¼Œè¿”回éžé›¶çš„返回值。 -@ 在支æŒæ‹“展属性的系统上，将一个有这些属性的文件当作有文件属性的目录。 默认情况下跟éšç¬¦å·é“¾æŽ¥ï¼Œå¦‚åŒæŒ‡å®š `-L'。 `..' 使用移除å‘å‰ç›¸é‚»ç›®å½•åæˆå‘˜ç›´åˆ° DIR 开始或一个斜æ çš„æ–¹å¼å¤„ç†ã€‚ 退出状æ€ï¼š 如果目录改å˜ï¼Œæˆ–在使用 -P 选项时 $PWD 修改æˆåŠŸæ—¶è¿”回 0，å¦åˆ™éžé›¶ã€‚å­è¿›ç¨‹å·²æ­»æˆ–者åœæ­¢å¸¸ç”¨ shell å˜é‡å称和使用。 BASH_VERSION å½“å‰ Bash 的版本信æ¯ã€‚ CDPATH 用于 `cd' 命令å‚æ•°æœç´¢çš„分å·åˆ†éš”的目录列表 GLOBIGNORE 路径扩展时忽略的文件å匹é…模å¼åˆ—表， 以分å·åˆ†éš”。 HISTFILE 您的命令历å²å­˜æ”¾çš„文件å称。 HISTFILESIZE 历å²æ–‡ä»¶æœ€å¤šå¯ä»¥ä¿å­˜çš„行数。 HISTSIZE 一个è¿è¡Œçš„ shell 最多å¯ä»¥è®¿é—®çš„历å²å‘½ä»¤è¡Œæ•°ã€‚ HOME 您的登录目录的完整路径。 HOSTNAME 当å‰ä¸»æœºçš„主机å。 HOSTTYPE 当å‰ç‰ˆæœ¬çš„ BASH 在其之上è¿è¡Œçš„ CPU 类型。 IGNOREEOF 控制 shell 收到文件结æŸç¬¦ä½œä¸ºå•ä¸€è¾“å…¥åŽçš„ 动作。如果设定这个å˜é‡ï¼Œåˆ™å®ƒçš„值是 shell 退出之å‰åœ¨ 一个空行上å¯ä»¥è¿žç»­çœ‹åˆ°çš„文件结æŸç¬¦æ•°é‡(默认为10)。 未设定时，文件结æŸç¬¦æ ‡å¿—ç€è¾“入的结æŸã€‚ MACHTYPE æ述当å‰è¿è¡Œ Bash 的系统的字符串。 MAILCHECK Bash 检测新邮件的频率，以秒为å•ä½ã€‚ MAILPATH Bash 从中检测新邮件的文件列表，以分å·åˆ†éš”。 OSTYPE è¿è¡Œ Bash çš„ Unix 版本。 PATH 当寻找命令时æœç´¢çš„目录列表，以冒å·åˆ†éš”。 PROMPT_COMMAND 打å°æ¯ä¸€ä¸ªä¸»æ示符之å‰æ‰§è¡Œçš„命 令。 PS1 主æ示符字符串。 PS2 从æ示符字符串。 PWD 当å‰ç›®å½•çš„完整路径。 SHELLOPTS å·²å¯ç”¨çš„ shell 选项列表，以冒å·åˆ†éš”。 TERM 当å‰ç»ˆç«¯ç±»åž‹çš„å称。 TIMEFORMAT 以关键则 `time' 显示的时间统计信æ¯çš„输出 æ ¼å¼ã€‚ auto_resume éžç©ºæ—¶ï¼Œä¸€ä¸ªå•ç‹¬çš„命令è¯ä¼šé¦–å…ˆè¢«åœ¨å½“å‰ åœæ­¢çš„任务列表中æœç´¢ã€‚如果找到则该任务被置于å‰å°ã€‚ 如果值为 `exact' 则æ„味ç€å‘½ä»¤è¯å¿…须精确匹é…åœæ­¢ä»»åŠ¡ 列表中的命令。如果值为 `substring' 则æ„味ç€å‘½ä»¤è¯å¿… 须匹é…任务的一个å­å­—符串。任何其他的值æ„味ç€å‘½ä»¤è¯ 必须是åœæ­¢ä»»åŠ¡çš„一个å‰ç¼€ã€‚ histchars 控制历å²å±•å¼€å’Œå¿«é€Ÿæ›¿æ¢çš„字符。第一个字符是 历å²æ›¿æ¢å­—符，通常是 `!'。第二个字符是快速替æ¢å­—符， 通常是 `^'。第三个是历å²æ³¨é‡Šå­—符，通常是 `#'。 HISTIGNORE 用于决定哪些命令被存入历å²æ–‡ä»¶çš„æ¨¡å¼ åˆ—è¡¨ï¼Œä»¥å†’å·åˆ†éš”。 继续创建一个以 NAME 为å的副进程。 异步执行 COMMANDS 命令，在执行 shell 中的数组å˜é‡ NAME çš„ 0 å·å’Œ 1 å·å…ƒç´ ä½œä¸ºæ–‡ä»¶æ述符，以一个管é“连接命令 分别作为命令的标准输出和输入设备。 默认的 NAME 是 "COPROC"。 退出状æ€ï¼š å‰¯è¿›ç¨‹ä¼šè¿”å›žé€€å‡ºçŠ¶æ€ 0。定义本地å˜é‡ã€‚ 创建一个以 NAME 为å称的å˜é‡ï¼Œå¹¶ä¸”å°† VALUE 赋值给它。 OPTION 选项å¯ä»¥æ˜¯ä»»ä½•èƒ½è¢« `declare' 接å—的选项。 本地å˜é‡åªèƒ½åœ¨å‡½æ•°å†…部被使用，它们åªèƒ½åœ¨å®šä¹‰å®ƒä»¬çš„函数内 部以åŠå­å‡½æ•°ä¸­å¯è§ã€‚ 退出状æ€ï¼š 返回æˆåŠŸï¼Œé™¤éžä½¿ç”¨äº†æ— æ•ˆçš„选项ã€å‘生了赋值错误或者 shell ä¸åœ¨æ‰§è¡Œä¸€ä¸ªå‡½æ•°ã€‚定义或显示别å。 ä¸å¸¦å‚数时，`alias' 以å¯é‡ç”¨çš„æ ¼å¼ `alias å称=值'在标准输出设备上打å°åˆ«å列表。 å¦åˆ™ï¼Œå¯¹äºŽæ¯ä¸ªç»™å®šå€¼çš„å称定义一个别å。 值末尾的空格会使下一个è¯è¢«æ£€æµ‹ä½œä¸ºåˆ«å替æ¢å±•å¼€ã€‚ 选项： -p 以å¯é‡ç”¨çš„æ ¼å¼æ‰“å°æ‰€æœ‰çš„已定义的别å 退出状æ€ï¼š 除éžä¸€ä¸ªæ²¡æœ‰å®šä¹‰çš„å字被作为å‚æ•°æ供，å¦åˆ™ alias 返回值为真。定义 shell 函数。 创建一个以 NAME 为åçš„ shell 函数。当作为一个简å•çš„命令å¯ç”¨æ—¶ï¼Œ NAME 函数执行调用 shell 的上下文中的 COMMANDs 命令。当 NAME 被å¯ç”¨æ—¶ï¼Œå‚数作为 $1...$n 被传递给函数，函数的å字储存在å˜é‡ $FUNCNAME 中。 退出状æ€ï¼š 返回æˆåŠŸé™¤éž NAME 为åªè¯»ã€‚显示目录栈。 显示当å‰è®°ä½çš„目录列表。通过 `pushd' 命令å¯ä»¥å°†ç›®å½•å­˜å…¥åˆ—表 中；`popd' 命令å¯ç”¨äºŽé历弹出列表。 选项： -c 删除所有元素以清空目录栈 -l ä¸æ‰“å°ä¸Žä¸»ç›®å½•ç›¸å…³çš„波浪å·å‰ç¼€çš„目录 -p æ¯è¡Œä¸€ä¸ªæ¡ç›®æ‰“å°ç›®å½•æ ˆ -v æ¯è¡Œä¸€ä¸ªæ¡ç›®ï¼Œä»¥æ ˆä¸­ä½ç½®ä¸ºå‰ç¼€æ‰“å°ç›®å½•æ ˆ å‚数： +N 显示 dirs ä¸å¸¦é€‰é¡¹å¯åŠ¨æ—¶æ˜¾ç¤ºçš„目录列表左起中第 N 个目录，从零开始。 -N 显示 dirs ä¸å¸¦é€‰é¡¹å¯åŠ¨æ—¶æ˜¾ç¤ºçš„目录列表å³èµ·ä¸­ç¬¬ N 个目录，从零开始。 退出状æ€ï¼š 返回æˆåŠŸï¼Œé™¤éžä½¿ç”¨äº†æ— æ•ˆçš„选项或者å‘生错误。显示内建命令的相关信æ¯ã€‚ 显示内建命令的简略信æ¯ã€‚如果指定了 PATTERN 模å¼ï¼Œ ç»™å‡ºæ‰€æœ‰åŒ¹é… PATTERN 模å¼çš„命令的详细帮助，å¦åˆ™æ‰“ å°ä¸€ä¸ªå¸®åŠ©ä¸»é¢˜åˆ—表 选项： -d 输出æ¯ä¸ªä¸»é¢˜çš„简短æè¿° -m 以伪 man 手册的格å¼æ˜¾ç¤ºä½¿ç”¨æ–¹æ³• -s 为æ¯ä¸€ä¸ªåŒ¹é… PATTERN 模å¼çš„主题仅显示一个用法 简介 å‚数： PATTERN æŒ‡å®šå¸®åŠ©ä¸»é¢˜çš„æ¨¡å¼ é€€å‡ºçŠ¶æ€ï¼š 返回æˆåŠŸï¼Œé™¤éžæœªæ‰¾åˆ° PATTERN 模å¼æ²¡æœ‰æ‰¾åˆ°æˆ–者使用了无效选项。显示命令类型的信æ¯ã€‚ 对于æ¯ä¸€ä¸ª NAME å称，指示如果作为命令它将如何被解释。 选项： -a 显示所有包å«å称为 NAME çš„å¯æ‰§è¡Œæ–‡ä»¶çš„ä½ç½®ï¼› 包括别åã€å†…建和函数。仅当 `-p' 选项没有使用时 -f 抑制 shell 函数查询 -P 为æ¯ä¸ª NAME å称惊醒 PATH 路径æœç´¢ï¼Œå³ä½¿å®ƒæ˜¯åˆ«å〠内建或函数，并且返回将被执行的ç£ç›˜ä¸Šæ–‡ä»¶çš„å称。 -p 返回将被执行的ç£ç›˜ä¸Šæ–‡ä»¶çš„å称，或者当 `type -t NAME' ä¸è¿”回 `file' 时，ä¸è¿”回任何值。 -t 返回下列è¯ä¸­çš„任何一个 `alias'ã€`keyword'〠`function'ã€`builtin'ã€`file' 或者 `'，相应地如果 NAME 是 一个别åã€shell ä¿ç•™å­—ã€shell 函数ã€shell 内建〠ç£ç›˜æ–‡ä»¶æˆ–没有找到。 å‚数： NAME å°†è¦è§£æžçš„命令。 退出状æ€ï¼š 如果所有的 NAME 命令都找到则返回æˆåŠŸï¼›ä»»ä½•ä¸€ä¸ªæ‰¾ä¸åˆ°åˆ™å¤±è´¥ã€‚从历å²åˆ—表中显示或者执行命令。 fc 被用于从历å²åˆ—表中列出或者é‡æ–°ç¼–辑并执行命令。 FIRST å’Œ LAST å˜é‡å¯ä»¥æ˜¯æ•°å­—用于指定范围，或者 FIRST å¯ä»¥æ˜¯ 字符串，æ„味ç€ä»¥è¿™ä¸ªå­—符串打头的最近的一个命令。 选项： -e ENAME 选择使用哪个编辑器。默认的是 FCEDIT, 然åŽæ˜¯ EDITOR， 然åŽæ˜¯ vi -l 列出行而ä¸ç¼–辑 -n 列举时çœç•¥è¡Œå· -r å转行的顺åº(最新行在å‰) 用 `fc -s [模å¼=æ›¿æ¢ ...] [命令]' çš„æ ¼å¼ï¼ŒCOMMAND 命令会在 OLD=NEW 替æ¢ä¹‹åŽè¢«é‡æ–°æ‰§è¡Œã€‚ r='fc -s' 是一个有用的别å，这样的è¯è¾“å…¥ `r cc'会执行最åŽä¸€ä¸ªä»¥ `cc' 开头的命令，输入 `r'会é‡æ–°æ‰§è¡Œæœ€åŽä¸€ä¸ªå‘½ä»¤ã€‚ 退出状æ€ï¼š 返回æˆåŠŸï¼Œæˆ–者执行的命令的状æ€ï¼›å¦‚果错误å‘生则返回éžé›¶ã€‚显示或æ“纵历å²åˆ—表。 带行å·æ˜¾ç¤ºåŽ†å²åˆ—表，将æ¯ä¸ªè¢«ä¿®æ”¹çš„æ¡ç›®åŠ ä¸Š `*' å‰ç¼€ã€‚ å‚æ•° N 会仅列出最åŽçš„ N 个æ¡ç›®ã€‚ 选项： -c 删除所有æ¡ç›®ä»Žè€Œæ¸…空历å²åˆ—表。 -d åç§»é‡ ä»ŽæŒ‡å®šä½ç½®åˆ é™¤åŽ†å²åˆ—表。负å移é‡å°†ä»ŽåŽ†å²æ¡ç›®æœ«å°¾ 开始计数 -a 将当å‰ä¼šè¯çš„历å²è¡Œè¿½åŠ åˆ°åŽ†å²æ–‡ä»¶ä¸­ -n 从历å²æ–‡ä»¶ä¸­è¯»å–所有未被读å–çš„è¡Œ 并且将它们附加到历å²åˆ—表 -r 读å–历å²æ–‡ä»¶å¹¶å°†å†…容追加到历å²åˆ—表中 -w 将当å‰åŽ†å²å†™å…¥åˆ°åŽ†å²æ–‡ä»¶ä¸­ -p 对æ¯ä¸€ä¸ª ARG å‚数展开历å²å¹¶æ˜¾ç¤ºç»“果，而ä¸å­˜å‚¨åˆ°åŽ†å²åˆ—表中 -s 以å•æ¡è®°å½•è¿½åŠ  ARG 到历å²åˆ—表中 如果给定了 FILENAME 文件å，则它将被作为历å²æ–‡ä»¶ã€‚å¦åˆ™ 如果 $HISTFILE å˜é‡æœ‰å€¼çš„è¯ä½¿ç”¨ä¹‹ï¼Œä¸ç„¶ä½¿ç”¨ ~/.bash_history 文件。 如果 $HISTTIMEFORMAT å˜é‡è¢«è®¾å®šå¹¶ä¸”ä¸ä¸ºç©ºï¼Œå®ƒçš„值会被用于 strftime(3) çš„æ ¼å¼å­—符串æ¥æ‰“å°ä¸Žæ¯ä¸€ä¸ªæ˜¾ç¤ºçš„历å²æ¡ç›®æƒ³å…³è”çš„ 时间戳，å¦åˆ™ä¸æ‰“å°æ—¶é—´æˆ³ã€‚ 退出状æ€ï¼š 返回æˆåŠŸï¼Œé™¤éžä½¿ç”¨äº†æ— æ•ˆçš„选项或者å‘生错误。显示或设定文件模å¼æŽ©ç ã€‚ 设定用户文件创建掩ç ä¸º MODE 模å¼ã€‚如果çœç•¥äº† MODE，则 打å°å½“å‰æŽ©ç çš„值。 如果 MODE 模å¼ä»¥æ•°å­—开头，则被当作八进制数解æžï¼›å¦åˆ™æ˜¯ä¸€ä¸ª chmod(1) å¯æŽ¥æ”¶çš„符å·æ¨¡å¼ä¸²ã€‚ 选项： -p 如果çœç•¥ MODE 模å¼ï¼Œä»¥å¯é‡ç”¨ä¸ºè¾“入的格å¼è¾“å…¥ -S 以符å·å½¢å¼è¾“出，å¦åˆ™ä»¥å…«è¿›åˆ¶æ•°æ ¼å¼è¾“出 退出状æ€ï¼š 返回æˆåŠŸï¼Œé™¤éžä½¿ç”¨äº†æ— æ•ˆçš„ MODE 模å¼æˆ–者选项。ä¾æ®é€‰é¡¹æ˜¾ç¤ºå¯èƒ½çš„补全。 æ„图在能产生å¯èƒ½çš„补全的 shell 函数内部使用。 如果æ供了å¯é€‰çš„ WORD å‚数，则产生按照 WORD 进行的匹é…。 退出状æ€ï¼š 除éžä½¿ç”¨äº†æ— æ•ˆé€‰é¡¹æˆ–者错误å‘生，å¦åˆ™è¿”回æˆåŠŸã€‚显示进程时间 æ‰“å° shell åŠå…¶æ‰€æœ‰å­è¿›ç¨‹çš„累计用户空间和 系统空间执行时间。 é€€å‡ºçŠ¶æ€ æ€»æ˜¯æˆåŠŸã€‚显示任务状æ€ã€‚ 列出活动的任务。JOBSPEC é™åˆ¶ä»…输出指定的任务。 ä¸å¸¦é€‰é¡¹æ—¶ï¼Œæ‰€æœ‰æ´»åŠ¨ä»»åŠ¡çš„状æ€éƒ½ä¼šæ˜¾ç¤ºã€‚ 选项： -l 在正常信æ¯åŸºç¡€ä¸Šåˆ—å‡ºè¿›ç¨‹å· -n 仅列出上次通告之åŽæ”¹å˜äº†çŠ¶æ€çš„进程 -p ä»…åˆ—å‡ºè¿›ç¨‹å· -r é™åˆ¶ä»…输出è¿è¡Œä¸­çš„任务 -s é™åˆ¶ä»…输出åœæ­¢çš„任务 如果使用了 -x 选项，ARG å‚数中的所有任务声明会被替æ¢ä¸ºè¯¥ä»»åŠ¡ 的进程组头领的进程å·ï¼Œç„¶åŽæ‰§è¡Œ COMMAND 命令。 退出状æ€ï¼š 返回æˆåŠŸï¼Œé™¤éžä½¿ç”¨äº†æ— æ•ˆçš„选项或者有错误å‘生。 如果使用 -x 选项，则返回 COMMAND 命令的退出状æ€ã€‚显示当å‰è®°ä½çš„目录列表。 目录 通过 `pushd' 命令加入这个列表；您å¯ä»¥ 使用 `popd' 命令对列表进行é历。 选项: -c 删除所有元素以清除目录栈 -l ä¸æ‰“å°ä¸Žå®¶ç›®å½•ç›¸å…³çš„ä»¥æ³¢æµªå· ä¸ºå‰ç¼€çš„目录 -p æ¯è¡Œä¸€ä¸ªæ¡ç›®æ‰“å°ç›®å½•æ ˆ -v 以栈ä½ç½®ä¸ºå‰ç¼€ï¼Œæ¯è¡Œä¸€ä¸ªæ¡ç›® 打å°ç›®å½•æ ˆ å‚æ•°: +N 以 dirs ä¸å¸¦é€‰é¡¹è¾“出的顺åºæ˜¾ç¤ºåˆ—表从左起第N个æ¡ç›®ï¼Œ 从 0 开始。 -N 以 dirs ä¸å¸¦é€‰é¡¹è¾“出的顺åºæ˜¾ç¤ºåˆ—表从å³èµ·ç¬¬N个项目， 从 0 开始。已完æˆå·²å®Œæˆ(%d)模拟器陷阱指令å¯ç”¨å’Œç¦ç”¨ shell 内建。 å¯ç”¨å’Œç¦ç”¨ shell 的内建命令。ç¦ç”¨ä½¿æ‚¨èƒ½å¤Ÿæ‰§è¡Œä¸€ä¸ªå’Œå†…建 命令åŒåçš„ç£ç›˜ä¸Šçš„命令，而无须使用完整的路径å。 选项： -a 打å°ä¸€ä¸ªå†…建的列表，并显示其中æ¯ä¸€ä¸ªæ˜¯å¦å¯ç”¨ -n ç¦ç”¨æ¯ä¸€ä¸ª NAME 内建或者显示一个被ç¦ç”¨çš„内建的列表 -p 以å¯é‡ç”¨çš„æ ¼å¼æ‰“å°ä¸€ä¸ªå†…建的列表 -s 仅打å°Posix `special' 内建的å称 控制动æ€åŠ è½½çš„选项： -f 从共享对象 FILENAME 文件中加载 NAME 内建 -d 删除以 -f 选项加载的内建 ä¸å¸¦é€‰é¡¹æ—¶ï¼Œæ¯ä¸€ä¸ª NAME 内建都被å¯ç”¨ã€‚ 如果è¦ä½¿ç”¨ $PATH 中找到的 `test' 而ä¸æ˜¯ shell 内建的版本， 输入 `enable -n test'。 退出状æ€ï¼š 返回æˆåŠŸï¼Œé™¤éž NAME ä¸æ˜¯ä¸€ä¸ª shell 内建或者有错误å‘生。估值算术表达å¼ã€‚ å°†æ¯ä¸ª ARG å‚赛作为算术表达å¼æ¥ä¼°å€¼ã€‚估值的计算以定宽的整 数完æˆï¼Œä¸å¸¦æº¢å‡ºæ£€æµ‹ï¼Œä¸è¿‡é™¤ 0 是被置陷阱的并且会报一个错 误。下列æ“作符被按照相åŒçš„算术优先级组åˆã€‚列表的顺åºæŒ‰ç…§ 优先级从高至低。 id++, id-- å˜é‡åŽç½®åŠ ï¼ŒåŽç½®å‡ ++id, --id å˜é‡å‰ç½®åŠ ï¼Œå‰ç½®å‡ -, + 一元å‡æ³•ï¼Œä¸€å…ƒåŠ æ³• !, ~ 逻辑和ä½å–å ** 指数 *, /, % 乘法，除法，å–余数 +, - 增加，å‡å°‘ <<, >> å‘左和å‘å³æŒ‰ä½ç§»ä½ <=, >=, <, > 比较 ==, != 等于，ä¸ç­‰äºŽ & 按ä½ä¸Ž ^ 按ä½å¼‚或 | 按ä½æˆ– && 逻辑与 || 逻辑或 expr ? expr : expr æ¡ä»¶æ“作符 =, *=, /=, %=, +=, -=, <<=, >>=, &=, ^=, |= 赋值 Shell å˜é‡å…许作为æ“作数。表达å¼ä¸­çš„å˜é‡çš„å称会被å–代以值 (强制转æ¢ä¸ºå®šå®½çš„æ•´æ•°)。表达å¼ä¸­çš„å˜é‡ä¸éœ€è¦æ‰“开整数属性。 æ“作符按照优先级进行估值。括å·ä¸­çš„å­è¡¨è¾¾å¼å°†è¢«å…ˆä¼°å€¼ï¼Œå¹¶å¯å–代上述表达å¼è§„则。 退出状æ€ï¼š 如果最åŽä¸€ä¸ª ARG å‚数估值为 0，则 let 返回 1ï¼› å¦åˆ™ let 返回 0。对æ¡ä»¶è¡¨è¾¾å¼è¿›è¡Œä¼°å€¼ã€‚ æ ¹æ® EXPR 表达å¼çš„ä¼°å€¼ä»¥çŠ¶æ€ 0 (真) 或 1 (伪) 退出。 表达å¼å¯ä»¥æ˜¯ä¸€å…ƒæˆ–者二元的。一元表达å¼é€šå¸¸ç”¨äºŽæ£€æµ‹ 文件状æ€ã€‚åŒæ—¶è¿˜æœ‰å­—符串æ“作符和数字比较æ“作符。 文件æ“作符： -a 文件 如果文件存在则为真。 -b 文件 如果文件为å—特殊文件则为真。 -c 文件 如果文件为字符特殊文件则为真。 -d 文件 如果文件为目录则为真。 -e 文件 如果文件存在则为真。 -f 文件 如果文件存在且为常规文件则为真。 -g 文件 如果文件的组属性设置打开则为真。 -h 文件 如果文件为符å·é“¾æŽ¥åˆ™ä¸ºçœŸã€‚ -L 文件 如果文件为符å·é“¾æŽ¥åˆ™ä¸ºçœŸã€‚ -k 文件 如果文件的粘滞 (sticky) ä½è®¾å®šåˆ™ä¸ºçœŸã€‚ -p 文件 如果文件为命å管é“则为真。 -r 文件 如果文件对于您是å¯è¯»çš„则为真。 -s 文件 如果文件存在且ä¸ä¸ºç©ºåˆ™ä¸ºçœŸã€‚ -S 文件 如果文件是套接字则为真。 -t 文件æ述符 如果文件æ述符在一个终端上打开则为真。 -u 文件 如果文件的用户数行设置打开则为真。 -w 文件 如果文件对您是å¯å†™çš„则为真 -x 文件 如果文件对您是å¯æ‰§è¡Œçš„则为真。 -O 文件 如果文件是被您所有的则为真。 -G 文件 如果文件被您的组所有则为真。 -N 文件 如果文件上次被读å–之åŽä¿®æ”¹è¿‡åˆ™ä¸ºçœŸã€‚ FILE1 -nt FILE2 如果 file1 文件新于 file2 文件则为真(æ ¹æ® ä¿®æ”¹æ—¥æœŸ)。 FILE1 -ot FILE2 如果 file1 文件旧于 file2 文件则为真。 FILE1 -ef FILE2 如果 file1 文件是 file2 文件的硬链接则为真。 字符串æ“作符 -z 字符串 如果字符串为空则为真。 -n 字符串 字符串 如果字符串ä¸ä¸ºç©ºåˆ™ä¸ºçœŸã€‚ STRING1 = STRING2 如果 string1 å’Œ string2 字符串相åŒåˆ™ä¸ºçœŸã€‚ STRING1 != STRING2 如果 string1 å’Œ string2 字符串ä¸ç›¸åŒåˆ™ä¸ºçœŸã€‚ STRING1 < STRING2 å¦‚æžœæŒ‰å­—å…¸æŽ’åº string1 在 string2 串之å‰åˆ™ä¸ºçœŸã€‚ STRING1 > STRING2 å¦‚æžœæŒ‰å­—å…¸æŽ’åº string1 在 string2 串之å‰åˆ™ä¸ºçœŸã€‚ 其他æ“作符： -o 选项 如果指定 shell 选项å¯ç”¨åˆ™ä¸ºçœŸã€‚ -v VAR 如果指定 Shell å˜é‡ VAR 已赋值则为真。 -R VAR 如果指定 Shell å˜é‡ VAR 已赋值且为å称引用则为真。 ! EXPR å¦‚æžœè¡¨è¾¾å¼ expr 为å‡åˆ™ä¸ºçœŸã€‚ EXPR1 -a EXPR2 如果 expr1 å’Œ expr2 都为真则为真。 EXPR1 -o EXPR2 如果 expr1 å’Œ expr2 有一个为真则为真。 arg1 OP arg2 算术测试。OPæ“作符å¯ä»¥æ˜¯ -eqã€-ne〠-ltã€-leã€-gtã€æˆ– -ge 中的一个。 二元算术æ“作返回真，如果 ARG1 å‚数等于ã€ä¸ç­‰äºŽã€ å°äºŽã€å°äºŽç­‰äºŽã€å¤§äºŽã€æˆ–者大于等于 ARG2 å‚数。 退出状æ€ï¼š 如果 EXPR 表达å¼ä¼°å€¼ä¸ºçœŸåˆ™è¿”回æˆåŠŸï¼›å¦‚æžœ EXPR 表达å¼ä¼°å€¼ 为å‡æˆ–者使用了无效的å‚数则返回失败。估值æ¡ä»¶è¡¨è¾¾å¼ã€‚ 是内建命令 "test" çš„åŒä¹‰è¯ï¼Œä½†æ˜¯æœ€åŽä¸€ä¸ªå‚数必须是 字符 `]'，以匹é…起始的 `['。执行一个简å•å‘½ä»¤æˆ–者显示命令的相关信æ¯ã€‚ 带 ARGS å‚æ•°è¿è¡Œ COMMAND 命令且抑制 shell 函数查询，或显示 指定的 COMMAND 命令的信æ¯ã€‚å¯ä»¥åœ¨å­˜åœ¨ç›¸åŒå称的函数定义的 情况下用于å¯åŠ¨ç£ç›˜ä¸Šçš„命令。 选项： -p 使用 PATH å˜é‡çš„一个默认值以确ä¿æ‰€æœ‰çš„标准工具都能被找到。 -v æ‰“å° COMMAND 命令的æ述，和 `type' 内建相似 -V 打å°æ¯ä¸ª COMMAND 命令的详细æè¿° é€€å‡ºçŠ¶æ€ è¿”å›ž COMMAND 命令的返回状æ€ï¼Œæˆ–者当找ä¸åˆ° COMMAND 命令时失败。将å‚数作为 shell 命令执行。 å°† ARGs åˆæˆä¸€ä¸ªå­—符串，用结果作为 shell 的输入， 并且执行得到的命令。 退出状æ€ï¼š 以命令的状æ€é€€å‡ºï¼Œæˆ–者在命令为空的情况下返回æˆåŠŸã€‚当测试ä¸åŒè¿‡æ—¶æ‰§è¡Œå‘½ä»¤ã€‚ `until' COMMANDS 命令的最终命令返回状æ€ä¸ä¸º 0 时， 展开并执行 COMMANDS 命令。 退出状æ€ï¼š 返回最åŽä¸€ä¸ªæ‰§è¡Œçš„命令的状æ€ã€‚åªè¦æµ‹è¯•æˆåŠŸå³æ‰§è¡Œå‘½ä»¤ã€‚ åªè¦åœ¨ `while' COMMANDS 中的最终命令返回结果为0，则 展开并执行 COMMANDS 命令。 退出状æ€ï¼š 返回最åŽä¸€ä¸ªæ‰§è¡Œçš„命令的状æ€ã€‚æ ¹æ®æ¡ä»¶æ‰§è¡Œå‘½ä»¤ã€‚ `if COMMANDS'列表被执行。如果退出状æ€ä¸ºé›¶ï¼Œåˆ™æ‰§è¡Œ`then COMMANDS' 列表。å¦åˆ™æŒ‰é¡ºåºæ‰§è¡Œæ¯ä¸ª `elif COMMANDS'列表，并且如果它的退出状æ€ä¸º 零，则执行对应的 `then COMMANDS' 列表并且 if 命令终止。å¦åˆ™å¦‚果存在的 情况下，执行 `else COMMANDS'列表。整个结构的退出状æ€æ˜¯æœ€åŽä¸€ä¸ªæ‰§è¡Œ 的命令的状æ€ï¼Œæˆ–者如果没有æ¡ä»¶æµ‹è¯•ä¸ºçœŸçš„è¯ï¼Œä¸ºé›¶ã€‚ 退出状æ€ï¼š 返回最åŽä¸€ä¸ªæ‰§è¡Œçš„命令的状æ€ã€‚基于模å¼åŒ¹é…æ¥æ‰§è¡Œå‘½ä»¤ã€‚ 基于 PATTERN 模å¼åŒ¹é…çš„è¯ WORD，有选择的执行 COMMANDS 命令。 `|' 用于分隔多个模å¼ã€‚ 退出状æ€ï¼š 返回最åŽä¸€ä¸ªæ‰§è¡Œçš„命令的状æ€ã€‚为列表中的æ¯ä¸ªæˆå‘˜æ‰§è¡Œå‘½ä»¤ã€‚ “forâ€å¾ªçŽ¯ä¸ºåˆ—表中的æ¯ä¸ªæˆå‘˜æ‰§è¡Œä¸€ç³»åˆ—的命令。如果没有 “in <è¯è¯­> ...;â€åˆ™å‡å®šä½¿ç”¨â€œin "$@"â€ã€‚对于 <è¯è¯­> ä¸­çš„æ¯ ä¸ªå…ƒç´ ï¼Œ<å称> å˜é‡è¢«è®¾å®šä¸ºè¯¥å…ƒç´ åŽæ‰§è¡Œ <命令>。 退出状æ€ï¼š 返回最åŽæ‰§è¡Œçš„命令的状æ€ã€‚åœ¨å½“å‰ shell 中执行一个文件中的命令。 åœ¨å½“å‰ shell 中读å–并执行 FILENAME 文件中的命令。$PATH å˜é‡ä¸­çš„ æ¡ç›®è¢«ç”¨äºŽå¯»æ‰¾åŒ…å« FILENAME 文件的目录。如果æ供了任何的 ARGUMENTS å‚数，则它们将æˆä¸º FILENAME 文件执行时的ä½ç½®å‚数。 退出状æ€ï¼š 返回 FILENAME 文件中最åŽä¸€ä¸ªå‘½ä»¤çš„状æ€ï¼›å¦‚æžœ FILENAME 文件ä¸å¯è¯»åˆ™å¤±è´¥ã€‚执行æ¡ä»¶å‘½ä»¤ã€‚ æ ¹æ®æ¡ä»¶è¡¨è¾¾å¼ EXPRESSION 的估值返回状æ€0或1。表达å¼æŒ‰ç…§ `test' 内建的相åŒæ¡ä»¶ç»„æˆï¼Œæˆ–者å¯ä»¥æœ‰ä¸‹åˆ—æ“作符连接而æˆï¼š ( EXPRESSION ) 返回 EXPRESSION 表达å¼çš„值 ! EXPRESSION 如果 EXPRESSION表达å¼ä¸ºå‡åˆ™ä¸ºçœŸï¼Œå¦åˆ™ä¸ºå‡ EXPR1 && EXPR2 如果 EXPR1 å’Œ EXPR2 表达å¼å‡ä¸ºçœŸåˆ™ä¸ºçœŸï¼Œå¦åˆ™ä¸ºå‡ EXPR1 || EXPR2 如果 EXPR1 å’Œ EXPR2 表达å¼ä¸­æœ‰ä¸€ä¸ªä¸ºçœŸåˆ™ä¸ºçœŸï¼Œå¦åˆ™ä¸ºå‡ 当使用 `==' å’Œ `!=' æ“作符时，æ“作符å³è¾¹çš„字符串被用作模å¼å¹¶ä¸”执行一个 匹é…。当使用 `=~' æ“作符时，æ“作符å³è¾¹çš„字符串被当作正则表达å¼æ¥è¿›è¡Œ 匹é…。 æ“作符 && å’Œ || å°†ä¸å¯¹ EXPR2 表达å¼è¿›è¡Œä¼°å€¼ï¼Œå¦‚æžœ EXPR1 表达å¼è¶³å¤Ÿç¡®å®š 整个表达å¼çš„值。 退出状æ€ï¼š æ ¹æ® EXPRESSION 的值为0或1。执行 shell 内建。 带å‚æ•° ARGs 执行 SHELL-BUILTIN 内建，并且ä¸åšå‘½ä»¤æŸ¥è¯¢ 在希望以 shell 函数的形å¼æ¥é‡æ–°å®žçŽ° shell 内建， 并且希望在函数之内执行该 shell 内建的情况下有用处。 退出状æ€ï¼š 以 SHELL-BUILTIN 内建的退出状æ€ä¸ºå‡†ï¼Œæˆ–者如果 SHELL-BUILTIN ä¸æ˜¯ä¸€ä¸ª shell 内建时为å‡ã€‚退出 %d退出一个登录 shell. ä»¥çŠ¶æ€ N 退出一个登录 shell。如果ä¸åœ¨ç™»å½• shell 中执行，则 返回一个错误。退出 forã€while 或 until 循环 退出一个 FORã€WHILE 或 UNTIL 循环。如果指定了N，则跳出Né‡ å¾ªçŽ¯ 退出状æ€ï¼š 退出状æ€ä¸º0é™¤éž N ä¸å¤§äºŽæˆ–等于 1。退出shell。 ä»¥çŠ¶æ€ N 退出 shell。 如果 N 被çœç•¥ï¼Œåˆ™é€€å‡ºçŠ¶æ€ 为最åŽä¸€ä¸ªæ‰§è¡Œçš„命令的退出状æ€ã€‚文件é™åˆ¶æµ®ç‚¹æ•°å¼‚常在 FORMAT 的控制下格å¼åŒ–å¹¶æ‰“å° ARGUMENTS å‚数。 选项： -v var 将输出赋值给 shell å˜é‡ VAR 而ä¸æ˜¾ç¤ºåœ¨æ ‡å‡†è¾“出上 FORMAT 是包å«ä¸‰ç§å¯¹è±¡çš„字符串：简å•åœ°è¢«æ‹·è´åˆ°æ ‡å‡†è¾“出的普通字符； 被å˜æ¢ä¹‹åŽæ‹·è´åˆ°æ ‡å‡†è¾“入的转义字符；以åŠæ¯ä¸ªéƒ½ä¼šå½±å“到下个å‚数的打å°çš„æ ¼å¼åŒ–声明。 在 printf(1) 中æ述的标准控制声明之外，printf 解æžï¼š %b 扩展对应å‚数中的åæ–œæ è½¬ä¹‰åºåˆ— %q 以å¯ä½œä¸º shell 输入的格å¼å¼•ç”¨å‚æ•° %(fmt)T 以 FMT 为供给 strftime(3) çš„æ ¼å¼è¾“出日期时间字符串 退出状æ€ï¼š 返回æˆåŠŸï¼Œé™¤éžä½¿ç”¨äº†æ— æ•ˆçš„选项或者写或赋值错误å‘生。GNU bash，版本 %s (%s) GNU bash，版本 %s-(%s) GNU 长选项: 使用 GNU 软件的通用帮助： 将命令组åˆä¸ºä¸€ä¸ªå•å…ƒã€‚ è¿è¡Œç»„中的命令集åˆã€‚è¿™æ˜¯å¯¹æ•´ä¸ªå‘½ä»¤é›†åˆ åšé‡å®šå‘的方法之一。 退出状æ€ï¼š 返回最åŽä¸€ä¸ªæ‰§è¡Œçš„命令的状æ€ã€‚HFT 待输入数æ®å·²æŽˆäºˆ HFT 监视模å¼å·²æ’¤é”€ HFT 监视模å¼å·²å®Œæˆ HFT 声音åºåˆ—HOME 未设定挂断无åæ°ï¼I/O 就绪报告：éžæ³•çš„指令信æ¯è¯·æ±‚中断已æ€æ­»è®¸å¯è¯ GPLv3+: GNU GPL 许å¯è¯ç¬¬ä¸‰ç‰ˆæˆ–者更新版本 标记 shell å˜é‡ä¸ºä¸å¯æ”¹å˜ã€‚ 标记æ¯ä¸€ä¸ª NAME å称为åªè¯»ï¼›è¿™äº› NAME å˜é‡çš„值将ä¸å¯ä»¥è¢«åŽç»­çš„赋值 æ“作所改å˜ã€‚如果æ供了 VALUE，则在标记为åªè¯»ä¹‹å‰å°† VALUE 值赋给å˜é‡ã€‚ 选项： -a 指下标数组å˜é‡ -A 指关è”æ•°ç»„æ ‡é‡ -f 指 shell 函数 -p 显示åªè¯»å˜é‡æˆ–函数列表，å–决于是å¦æ供了 -f 选项 `--' çš„å‚æ•°ç¦ç”¨è¿›ä¸€æ­¥çš„选项处ç†ã€‚ 退出状æ€ï¼š 返回æˆåŠŸï¼Œé™¤éžä½¿ç”¨äº†æ— æ•ˆçš„选项或者 NAME å称。修改或显示补全选项。 修改æ¯ä¸ª NAME å称的补全选项，或如果没有æä¾› NAME å称，执行当å‰çš„补全。 如果ä¸å¸¦é€‰é¡¹ï¼Œæ‰“å°æ¯ä¸ª NAME å称的补全选项或当å‰çš„补全声明。 选项： -o option 为æ¯ä¸ª NAME å称设定补全选项 option -D 为 "default" 命令补全改å˜é€‰é¡¹ -E 为 "empty" 命令补全改å˜é€‰é¡¹ -I 为首å•è¯çš„补全改å˜é€‰é¡¹ 使用 `+o' 而ä¸æ˜¯ `-o' å¯ä»¥å…³é—­æŒ‡å®šçš„选项。 å‚数： æ¯ä¸ª NAME å称都对应一个之å‰ä»¥é€šè¿‡ `complete' 内建定义了的补全声明的 命令。如果ä¸æä¾› NAME å称，当å‰ç”Ÿæˆè¡¥å…¨çš„函数必须调用 compopt， 并且当å‰æ‰§è¡Œçš„补全生æˆå™¨é€‰é¡¹ä¼šè¢«ä¿®æ”¹ã€‚ 退出状æ€ï¼š 返回æˆåŠŸï¼Œé™¤éžä½¿ç”¨äº†æ— æ•ˆçš„选项或者 NAME å称没有定义补全声明。将任务移至å‰å°ã€‚ 将以 JOB_SPEC 标识的任务放至å‰å°ï¼Œä½¿å…¶æˆä¸º 当å‰ä»»åŠ¡ã€‚如果 JOB_SPEC ä¸å­˜åœ¨ï¼Œshell 观念中的当å‰ä»»åŠ¡ 将被使用。 退出状æ€ï¼š 放至å‰å°çš„命令状æ€ï¼Œæˆ–者当错误å‘生时为失败。移动任务至åŽå°ã€‚ å°† JOB_SPEC 标识的任务放至åŽå°ï¼Œå°±åƒå®ƒä»¬ 是带 `&' å¯åŠ¨çš„一样。如果 JOB_SPEC ä¸å­˜åœ¨ï¼Œshell 观念中的 当å‰ä»»åŠ¡å°†ä¼šè¢«ä½¿ç”¨ã€‚ 退出状æ€ï¼š 返回æˆåŠŸé™¤éžä»»åŠ¡ç®¡ç†æ²¡æœ‰å¯ç”¨æˆ–者错误å‘生。空的命令。 没有效果； 此命令ä¸åšä»»ä½•æ“作。 退出状æ€ï¼š 总是æˆåŠŸã€‚OLDPWD 未设定打å°å½“å‰å·¥ä½œç›®å½•çš„å字。 选项： -L æ‰“å° $PWD å˜é‡çš„值，如果它包å«äº†å½“å‰çš„工作目录 -P 打å°å½“å‰çš„物ç†è·¯å¾„，ä¸å¸¦æœ‰ä»»ä½•çš„符å·é“¾æŽ¥ 默认情况下，`pwd' 的行为和带 `-L' 选项一致 退出状æ€ï¼š 除éžä½¿ç”¨äº†æ— æ•ˆé€‰é¡¹æˆ–者当å‰ç›®å½•ä¸å¯è¯»ï¼Œå¦åˆ™è¿”回状æ€ä¸º0。退出从标准输入读å–一行并将其分为ä¸åŒçš„域。 从标准输入读å–å•ç‹¬çš„一行，或者如果使用了 -u 选项，从文件æ述符 FD 中读å–。 该行被分割æˆåŸŸï¼Œå¦‚åŒè¯è¯­åˆ†å‰²ä¸€æ ·ï¼Œå¹¶ä¸”第一个è¯è¢«èµ‹å€¼ç»™ç¬¬ä¸€ä¸ª NAME å˜é‡ï¼Œç¬¬äºŒ 个è¯è¢«èµ‹å€¼ç»™ç¬¬äºŒä¸ª NAME å˜é‡ï¼Œå¦‚此继续，直到剩下所有的è¯è¢«èµ‹å€¼ç»™æœ€åŽä¸€ä¸ª NAME å˜é‡ã€‚åªæœ‰ $IFS å˜é‡ä¸­çš„字符被认作是è¯è¯­åˆ†éš”符。 如果没有æä¾› NAME å˜é‡ï¼Œåˆ™è¯»å–的行被存放在 REPLY å˜é‡ä¸­ã€‚ 选项： -a array å°†è¯è¯­èµ‹å€¼ç»™ ARRAY 数组å˜é‡çš„åºåˆ—下标æˆå‘˜ï¼Œä»Žé›¶å¼€å§‹ -d delim æŒç»­è¯»å–直到读入 DELIM å˜é‡ä¸­çš„第一个字符，而ä¸æ˜¯æ¢è¡Œç¬¦ -e 使用 Readline 获å–è¡Œ -i text 使用 TEXT 文本作为 Readline çš„åˆå§‹æ–‡å­— -n nchars è¯»å– nchars 个字符之åŽè¿”回，而ä¸æ˜¯ç­‰åˆ°è¯»å–æ¢è¡Œç¬¦ã€‚ 但是分隔符ä»ç„¶æœ‰æ•ˆï¼Œå¦‚æžœé‡åˆ°åˆ†éš”符之å‰è¯»å–了ä¸è¶³ nchars 个字符。 -N nchars 在准确读å–了 nchars 个字符之åŽè¿”回，除éžé‡åˆ°æ–‡ä»¶ç»“æŸç¬¦æˆ–者读超时， 任何的分隔符都被忽略 -p prompt 在å°è¯•è¯»å–之å‰è¾“出 PROMPT æ示符并且ä¸å¸¦ æ¢è¡Œç¬¦ -r ä¸å…许åæ–œæ è½¬ä¹‰ä»»ä½•å­—符 -s ä¸å›žæ˜¾ç»ˆç«¯çš„任何输入 -t timeout 如果在 TIMEOUT 秒内没有读å–一个完整的行则超时并且返回失败。 TMOUT å˜é‡çš„值是默认的超时时间。TIMEOUT å¯ä»¥æ˜¯å°æ•°ã€‚ 如果 TIMEOUT 是 0，那么仅当在指定的文件æ述符上输入有效的时候， read æ‰è¿”回æˆåŠŸï¼›å¦åˆ™å®ƒå°†ç«‹åˆ»è¿”回而ä¸å°è¯•è¯»å–任何数æ®ã€‚ 如果超过了超时时间，则返回状æ€ç å¤§äºŽ 128 -u fd 从文件æ述符 FD 中读å–，而ä¸æ˜¯æ ‡å‡†è¾“å…¥ 退出状æ€ï¼š 返回ç ä¸ºé›¶ï¼Œé™¤éžé‡åˆ°äº†æ–‡ä»¶ç»“æŸç¬¦ã€è¯»è¶…时（且返回ç ä¸å¤§äºŽ128）〠出现了å˜é‡èµ‹å€¼é”™è¯¯æˆ–者无效的文件æ述符作为å‚数传递给了 -u 选项。从一个文件中读å–行到数组å˜é‡ä¸­ã€‚ 一个 `mapfile'çš„åŒä¹‰è¯ã€‚从标准输入读å–行到下标数组å˜é‡ä¸­ã€‚ 从标准输入读å–行到下标数组å˜é‡ ARRAY 中，或者如果使用了 -u 选项， 从文件æ述符 FD 中读å–。MAPFILE å˜é‡æ˜¯é»˜è®¤çš„ ARRAY å˜é‡ã€‚ 选项： -d delim 使用 DELIM 而éžæ¢è¡Œç¬¦æ–­è¡Œ -n count æœ€å¤šæ‹·è´ COUNT 行，如果 COUNT 为 0，则拷è´æ‰€æœ‰è¡Œã€‚ -O origin 从下标 ORIGIN 开始 赋值给 ARRAY å˜é‡ã€‚默认下标是0. -s count 丢弃最先读å–çš„ COUNT 行。 -t 从读å–çš„æ¯è¡Œæœ«å°¾åˆ é™¤ä¸€ä¸ªæ¢è¡Œç¬¦ã€‚ -u fd 从文件æ述符 FD 中读å–行而ä¸æ˜¯æ ‡å‡†è¾“入。 -C callback æ¯ QUANTUM 次读行之åŽå¯¹ CALLBACK 回调进行估值。 -c quantum 定义æ¯æ¬¡è°ƒç”¨ CALLBACK 回调之间读å–的行数。 å‚数： ARRAY 存储数æ®ä½¿ç”¨çš„数组å˜é‡ 如果使用了 -C 而没有 -c，默认的é‡å­æ˜¯5000。当对 CALLBACK 估值时， 下一个将被赋值的数组元素的下标作为é¢å¤–å‚数被传递。 如果没有显å¼æŒ‡å®šèµ·å§‹ä¸‹æ ‡ï¼Œmapfile 将在赋值å‰æ¸…空 ARRAY å˜é‡ã€‚ 退出状æ€ï¼š 返回æˆåŠŸï¼Œé™¤éžä½¿ç”¨äº†æ— æ•ˆçš„选项，或者 ARRAY å˜é‡åªè¯»æˆ–ä¸æ˜¯ä¸‹æ ‡æ•°ç»„。记录é”è®°ä½æˆ–显示程åºä½ç½®ã€‚ 确定并记ä½æ¯ä¸€ä¸ªç»™å®š NAME å称的命令的完整路径。 如果ä¸æä¾›å‚数，则显示已ç»è®°ä½çš„命令的信æ¯ã€‚ 选项： -d 忘记æ¯ä¸€ä¸ªå·²ç»è®°ä½çš„ NAME çš„ä½ç½® -l 以å¯ä½œä¸ºè¾“å…¥é‡ç”¨çš„æ ¼å¼æ˜¾ç¤º -p pathname 使用 pathname 路径作为 NAME 命令的全路径 -r 忘记所有记ä½çš„ä½ç½® -t 打å°è®°ä½çš„æ¯ä¸€ä¸ª NAME å称的ä½ç½®ï¼Œå¦‚果指定了多个 NAME å称，则æ¯ä¸ªä½ç½®å‰é¢ä¼šåŠ ä¸Šç›¸åº”çš„ NAME å称 å‚数： NAME æ¯ä¸ª NAME å称会在 $PATH 路径å˜é‡ä¸­è¢«æœç´¢ï¼Œå¹¶ä¸”添加到记ä½çš„命令 列表中。 退出状æ€ï¼š 返回æˆåŠŸï¼Œé™¤éž NAME 命令没有找到或者使用了无效的选项。从栈中删除目录。 从目录栈中删除æ¡ç›®ã€‚ä¸å¸¦å‚数时，删除栈顶目录，并改å˜è‡³æ–°çš„æ ˆ 顶目录。 选项： -n 抑制从栈中删除目录时通常的目录å˜æ¢æ“作，从而仅对栈 进行æ“作。 å‚数： +N 删除第 N 个目录 (`dirs' 显示的目录列表中左起，从零开始)。 例如：`popd +0' 删除第一个目录，`popd +1' 删除第二个。 -N 删除第 N 个目录 (`dirs' 显示的目录列表中å³èµ·ï¼Œä»Žé›¶å¼€å§‹)。 例如：`popd -0' 删除最åŽä¸€ä¸ªç›®å½•ï¼Œï¼Œ`popd -1' 删除倒数第二个。 `dirs' 内建显示目录栈。 退出状æ€ï¼š 返回æˆåŠŸï¼Œé™¤éžä½¿ç”¨äº†æ— æ•ˆçš„å‚数或者目录å˜æ¢å¤±è´¥ã€‚从别å定义列表中删除æ¯ä¸€ä¸ªâ€œåå­—â€ã€‚ 选项： -a 删除所有的别å定义 返回æˆåŠŸï¼Œé™¤éžâ€œåå­—â€ä¸æ˜¯ä¸€ä¸ªå·²å­˜åœ¨çš„别åã€‚ä»Žå½“å‰ shell 中删除任务。 从活动任务表中删除æ¯ä¸€ä¸ª JOBSPEC å‚数。ä¸å¸¦ä»»ä½• JOBSPEC å‚数时，shell 使用观念中的当å‰ä»»åŠ¡ã€‚ 选项： -a 如果ä¸æä¾› JOBSPEC å‚数，则删除所有任务 -h 标识æ¯ä¸ª JOBSPEC 任务，从而当 shell 接收到 SIGHUP ä¿¡å·æ—¶ä¸å‘é€ SIGHUP 给指定任务 -r 仅删除è¿è¡Œä¸­çš„任务 退出状æ€ï¼š 返回æˆåŠŸé™¤éžä½¿ç”¨äº†æ— æ•ˆçš„选项或者 JOBSPEC 声明。从目录栈中删除æ¡ç›®ã€‚ä¸å¸¦å‚数时，删除 栈顶目录并改å˜è‡³æ–°çš„栈顶目录。 选项： -n 抑制从栈中删除目录时通常的改å˜ç›®å½•æ“作， 从而åªè¿›è¡Œæ ˆæ“作。 å‚数： +N 从 `dirs' 输出的列表中， 删除左起第N个æ¡ç›®ï¼Œè®¡æ•°ä»Ž0开始。例如：`popd +0' 删除第一个目录，`popd +1' 删除第二个。 -N 从 `dirs' 输出的列表中， 删除å³èµ·ç¬¬N个æ¡ç›®ï¼Œè®¡æ•°ä»Ž0开始，例如：`popd -0' 删除最åŽä¸€ä¸ªæ¡ç›®ï¼Œ`popd -1' 删除倒数第二个。 `dirs' 内建å˜é‡æ˜¾ç¤ºç›®å½•æ ˆã€‚ä½¿ç”¨æŒ‡å®šå‘½ä»¤æ›¿æ¢ shell。 执行 COMMAND 命令，以指定的程åºæ›¿æ¢è¿™ä¸ª shell。 ARGUMENTS å‚æ•°æˆä¸º COMMAND命令的å‚数。如果 没有指定COMMAND 命令，则任何的é‡å®šå‘åœ¨å½“å‰ shell 中生效。 选项： -a å称 作为第0个å‚数传递给 COMMAND 命令 -c 在一个空环境中执行 COMMAND 命令 -l 在COMMAND 命令的第0个å‚数中加一个短线 如果命令ä¸èƒ½è¢«æ‰§è¡Œï¼Œåˆ™é€€å‡ºä¸€ä¸ªéžäº¤äº’å¼çš„ shellï¼Œé™¤éž shell 选项`execfail' å·²ç»è®¾å®šã€‚ 退出状æ€ï¼š 返回æˆåŠŸé™¤éž COMMAND 命令没有找到或者出现一个é‡å®šå‘错误。报告管é“执行的消耗时间。 执行 PIPELINE å¹¶ä¸”æ‰“å° PIPELINE 终结时实际时间ã€ç”¨æˆ· CPU 时间和系统 CPU 时间的总结。 选项： -p 用å¯è¿ç§»çš„ POSIX æ ¼å¼æ‰“å°ç”¨æ—¶æ€»ç»“。 TIMEFORMAT å˜é‡çš„值被作为输出格å¼ã€‚ 退出状æ€ï¼š 返回状æ€å³PIPELINE 的返回状æ€ã€‚继续 forã€while 或 until 循环。 ç»§ç»­å½“å‰ FORã€WHILE 或 UNTIL 循环的下一步。 如果指定了 N， 则继续当å‰çš„第 N é‡å¾ªçŽ¯ã€‚ 退出状æ€ï¼š 退出状æ€ä¸º 0 é™¤éž N ä¸å¤§äºŽæˆ–等于1。在å‰å°ç»§ç»­ä»»åŠ¡ 对于 JOB_SPEC å‚æ•°æ¥è¯´å’Œ `fg' 命令等åŒã€‚继续一个 åœæ­¢çš„或者åŽå°ä»»åŠ¡ã€‚JOB_SPEC å¯ä»¥æŒ‡å®šä¸€ä¸ªä»»åŠ¡ å字或任务å·ã€‚在 JOB_SPEC åŽåŠ ä¸Šä¸€ä¸ª `&' 将会把 任务放至åŽå°ï¼Œå°±åƒä»»åŠ¡å£°æ˜Žè¢«ä½œä¸º `bg' 命令的å‚æ•° 执行一样。 退出状æ€ï¼š 返回被继续的任务的状æ€ã€‚返回一个æˆåŠŸç»“果。 退出状æ€ï¼š 总是æˆåŠŸã€‚返回一个ä¸æˆåŠŸçš„结果。 退出状æ€ï¼š 总是失败。从一个 shell 函数返回。 使一个函数或者被引用的脚本以指定的返回值 N 退出。 如果 N 被çœç•¥ï¼Œåˆ™è¿”回状æ€å°±æ˜¯ 函数或脚本中的最åŽä¸€ä¸ªæ‰§è¡Œçš„命令的状æ€ã€‚ 退出状æ€ï¼š 返回 N，或者如果 shell ä¸åœ¨æ‰§è¡Œä¸€ä¸ªå‡½æ•°æˆ–引用脚本时，失败。返回当å‰å­è°ƒç”¨çš„上下文。 ä¸å¸¦æœ‰ EXPR 时，返回 "$line $filename"。带有 EXPR 时，返回 "$line $subroutine $filename"；这个é¢å¤–çš„ä¿¡æ¯å¯ä»¥è¢«ç”¨äºŽæä¾› 栈追踪。 EXPR 的值 显示了到当å‰è°ƒç”¨å¸§éœ€è¦å›žåŽ»å¤šå°‘个调用帧；顶部帧 是第 0 帧。 退出状æ€ï¼š é™¤éž shell ä¸åœ¨æ‰§è¡Œä¸€ä¸ª shell 函数或者 EXPR 无效，å¦åˆ™è¿”回结 果为0。è¿è¡Œä¸­æ®µé”™è¯¯ä»Žåˆ—表中选å–è¯å¹¶ä¸”执行命令。 <è¯è¯­...> 被展开，生æˆä¸€ä¸ªè¯çš„列表。展开的è¯é›†åˆè¢«æ‰“å° åœ¨æ ‡å‡†é”™è¯¯è¾“å‡ºè®¾å¤‡ä¸Šï¼Œæ¯ä¸ªä»¥ä¸€ä¸ªæ•°å­—åšå‰ç¼€ã€‚如果没有 `in WORDS' 则å‡å®šä½¿ç”¨`in "$@"'。PS3æ示符会被显示并且从标准输入读入一行 如果该行由被显示的è¯å¯¹åº”的数字组æˆï¼Œåˆ™ NAME å˜é‡è¢«è®¾å®šä¸ºç›¸åº” çš„è¯ã€‚如果行为空，则 WORDS å˜é‡å’Œæ示符被é‡æ–°æ˜¾ç¤ºã€‚如果读å–了 文件结æŸç¬¦ï¼Œåˆ™å‘½ä»¤å®Œæˆã€‚读入任何其他的值会导致 NAME å˜é‡è¢«è®¾å®š 为空。读入的行被存放在å˜é‡ REPLY 中。COMMANDS 命令在æ¯æ¬¡é€‰æ‹© 之åŽæ‰§è¡Œç›´åˆ°æ‰§è¡Œä¸€ä¸ª break 命令。 退出状æ€ï¼š 返回最åŽä¸€ä¸ªæ‰§è¡Œçš„命令的状æ€ã€‚å‘一个任务å‘é€ä¸€ä¸ªä¿¡å·ã€‚ å‘以 PID 进程å·æˆ–者 JOBSPEC 任务声明指定的进程å‘é€ä¸€ä¸ªä»¥ SIGSPEC ä¿¡å·å£°æ˜Žæˆ– SIGNUM ä¿¡å·ç¼–å·å‘½åçš„ä¿¡å·ã€‚如果没有指定 SIGSPEC 或 SIGNUM，那么å‡å®šå‘é€ SIGTERM ä¿¡å·ã€‚ 选项： -s sig SIG 是信å·å称 -n sig SIG 是信å·ç¼–å· -l 列出信å·å称；如果å‚æ•°åŽè·Ÿ `-l'则被å‡è®¾ä¸ºä¿¡å·ç¼–å·ï¼Œ 而相应的信å·å称会被列出 Kill æˆä¸º shell 内建有两个ç†ç”±ï¼šå®ƒå…许使用任务编å·è€Œä¸æ˜¯è¿›ç¨‹å·ï¼Œ 并且在å¯ä»¥åˆ›å»ºçš„进程数上é™è¾¾åˆ°æ˜¯å…许进程被æ€æ­»ã€‚ 退出状æ€ï¼š 返回æˆåŠŸï¼Œé™¤éžä½¿ç”¨äº†æ— æ•ˆçš„选项或者有错误å‘生。设定 Readline 键绑定和å˜é‡ã€‚ 绑定一个键åºåˆ—到一个 Readline 函数或者å®ï¼Œæˆ–者设定一个 Readline å˜é‡ã€‚éžé€‰é¡¹å‚数的语法和 ~/.inputrc 文件中的等 åŒï¼Œä½†æ˜¯å¿…须作为一个å‚数被传递， 例如，bind '"\C-x\C-r": re-read-init-file'. 选项： -m 键映射 在此命令执行过程中使用指定的键映射。 å¯è¢«æŽ¥å—的键映射å字有 emacsã€emacs-standardã€emacs-meta〠emacs-ctlxã€viã€vi-moveã€vi-commandã€å’Œ vi-insert。 -l 列出函数å称。 -P 列出函数å称和绑定。 -p 以å¯ä»¥é‡æ–°ç”¨ä½œè¾“入的格å¼åˆ—出函数å称和绑定。 -S 列出å¯ä»¥å¯åŠ¨å®çš„é”®åºåˆ—以åŠå®ƒä»¬çš„值 -s 以å¯ä»¥é‡æ–°ç”¨ä½œè¾“入的格å¼åˆ—出å¯ä»¥å¯åŠ¨å®çš„键以åŠå®ƒä»¬çš„值。 -V 列出å˜é‡åæˆå’Œå®ƒä»¬çš„值 -v 以å¯ä»¥é‡æ–°ç”¨ä½œè¾“入的格å¼åˆ—出å˜é‡çš„å称和它们的值 -q 函数å 查询指定的函数å¯ä»¥ç”±å“ªäº›é”®å¯åŠ¨ã€‚ -u 函数å å绑定所有绑定至指定函数的键。 -r é”®åºåˆ— å–消指定键åºåˆ—的绑定。 -f 文件å 从指定文件中读å–键绑定。 -x é”®åºåˆ—:shell命令 当指定的键åºåˆ—被输入时，执行指定的 shell 命令。 -X 以å¯è¢«é‡ç”¨çš„å½¢å¼åˆ—出用 -x 绑定的键åºåˆ—和命令。 退出状æ€ï¼š 除éžä½¿ç”¨äº†æ— æ³•è¾¨è®¤çš„选项或者错误å‘生，å¦åˆ™è¿”回0.设定和å–消设定 shell 选项。 改å˜æ¯ä¸ª shell 选项 OPTNAME 的设定。ä¸å¸¦å‚数时， 列出æ¯ä¸ªæ供的 OPTNAME，å¦åˆ™åˆ—出所有 shell 选项； åŒæ—¶æ ‡æ³¨æ¯ä¸€ä¸ªé€‰é¡¹æ˜¯å¦è¢«è®¾å®šã€‚ 选项： -o é™åˆ¶ OPTNAME 为定义用于`set -o' 的选项 -p 打å°æ¯ä¸ª shell 选项并标注它的状æ€ã€‚ -q 抑制输出 -s å¯ç”¨(设定)æ¯ä¸ª OPTNAME 选项 -u ç¦ç”¨(å–消设定)æ¯ä¸ª OPTNAME 选项 退出状æ€ï¼š 如果 OPTNAME 选项被å¯ç”¨åˆ™è¿”回æˆåŠŸï¼›å¦‚果是 无效的选项或 OPTNAME 被ç¦ç”¨åˆ™å¤±è´¥ã€‚为 shell å˜é‡è®¾å®šå¯¼å‡ºå±žæ€§ã€‚ 标记æ¯ä¸ª NAME å称为自动导出到åŽç»­å‘½ä»¤æ‰§è¡Œçš„环境。如果æ供了 VALUE 则导出å‰å°† VALUE 作为赋值。 选项： -f 指 shell 函数 -n 删除æ¯ä¸ª NAME å称的导出属性 -p 显示所有导出的å˜é‡å’Œå‡½æ•°çš„列表 `--' çš„å‚æ•°ç¦ç”¨è¿›ä¸€æ­¥çš„选项处ç†ã€‚ 退出状æ€ï¼š 返回æˆåŠŸï¼Œé™¤éžä½¿ç”¨äº†æ— æ•ˆçš„选项或者 NAME å称。设定或å–消设定 shell 选项和ä½ç½®å‚数的值。 æ”¹å˜ shell 选项和ä½ç½®å‚数的值，或者显示 shell å˜é‡çš„ å称和值。 选项： -a 标记修改的或者创建的å˜é‡ä¸ºå¯¼å‡ºã€‚ -b ç«‹å³é€šå‘Šä»»åŠ¡ç»ˆç»“。 -e 如果一个命令以éžé›¶çŠ¶æ€é€€å‡ºï¼Œåˆ™ç«‹å³é€€å‡ºã€‚ -f ç¦ç”¨æ–‡ä»¶å生æˆ(模å¼åŒ¹é…)。 -h 当查询命令时记ä½å®ƒä»¬çš„ä½ç½® -k 所有的赋值å‚数被放在命令的环境中，而ä¸ä»…仅是 命令å称之å‰çš„å‚数。 -m å¯ç”¨ä»»åŠ¡æŽ§åˆ¶ã€‚ -n 读å–命令但ä¸æ‰§è¡Œ -o 选项å 设定与选项å对应的å˜é‡ï¼š allexport 与 -a ç›¸åŒ braceexpand 与 -B ç›¸åŒ emacs 使用 emacs é£Žæ ¼çš„è¡Œç¼–è¾‘ç•Œé¢ errexit 与 -e ç›¸åŒ errtrace 与 -E ç›¸åŒ functrace 与 -T ç›¸åŒ hashall 与 -h ç›¸åŒ histexpand 与 -H ç›¸åŒ history å¯ç”¨å‘½ä»¤åŽ†å² ignoreeof shell 读å–文件结æŸç¬¦æ—¶ä¸ä¼šé€€å‡º interactive-comments å…许在交互å¼å‘½ä»¤ä¸­æ˜¾ç¤ºæ³¨é‡Š keyword 与 -k ç›¸åŒ monitor 与 -m ç›¸åŒ noclobber 与 -C ç›¸åŒ noexec 与 -n ç›¸åŒ noglob 与 -f ç›¸åŒ nolog ç›®å‰å¯æŽ¥å—但是被忽略 notify 与 -b ç›¸åŒ nounset 与 -u ç›¸åŒ onecmd 与 -t ç›¸åŒ physical 与 -P ç›¸åŒ pipefail 管é“的返回值是最åŽä¸€ä¸ªéžé›¶è¿”回值的命令的返回结果， 或者当所有命令都返回零是也为零。 posix 改å˜é»˜è®¤æ—¶å’Œ Posix 标准ä¸åŒçš„ bash 行为 以匹é…标准 privileged 与 -p ç›¸åŒ verbose 与 -v ç›¸åŒ vi 使用 vi é£Žæ ¼çš„è¡Œç¼–è¾‘ç•Œé¢ xtrace 与 -x ç›¸åŒ -p 无论何时当真实的有效的用户身份ä¸åŒ¹é…时打开。 ç¦ç”¨å¯¹ $ENV 文件的处ç†ä»¥åŠå¯¼å…¥ shell 函数。 关闭此选项会导致有效的用户编å·å’Œç»„ç¼–å·è®¾å®š 为真实的用户编å·å’Œç»„ç¼–å· -t 读å–并执行一个命令之åŽé€€å‡ºã€‚ -u 替æ¢æ—¶å°†ä¸ºè®¾å®šçš„å˜é‡å½“作错误对待。 -v è¯»å– shell 输入行时将它们打å°ã€‚ -x 执行命令时打å°å®ƒä»¬ä»¥åŠå‚数。 -B shell 将执行花括å·æ‰©å±•ã€‚ -C 设定之åŽç¦æ­¢ä»¥é‡å®šå‘输出的方å¼è¦†ç›–常 规文件。 -E è®¾å®šä¹‹åŽ ERR 陷阱会被 shell 函数继承。 -H å¯ç”¨ ! 风格的历å²æ›¿æ¢ã€‚当 shell 是交互å¼çš„ 时候这个标识ä½é»˜è®¤æ‰“开。 -P 设定之åŽç±»ä¼¼ cd 的会改å˜å½“å‰ç›®å½•çš„å‘½ä»¤ä¸ è¿½è¸ªç¬¦å·é“¾æŽ¥ã€‚ -T è®¾å®šä¹‹åŽ DEBUG 陷阱会被 shell 函数继承。 -- 任何剩余的å‚数会被赋值给ä½ç½®å‚数。如果没 有剩余的å‚数，ä½ç½®å‚æ•°ä¸ä¼šè¢«è®¾ç½®ã€‚ - 任何剩余的å‚数会被赋值给ä½ç½®å‚数。 -x å’Œ -v 选项已关闭。 使用 + 而ä¸æ˜¯ - 会使标志ä½è¢«å…³é—­ã€‚标志ä½ä¹Ÿå¯ä»¥åœ¨ shell 被å¯åŠ¨æ—¶ä½¿ç”¨ã€‚当å‰çš„标志ä½è®¾å®šå¯ä»¥åœ¨ $- å˜ é‡ä¸­æ‰¾åˆ°ã€‚剩余的 ARG å‚数是ä½ç½®å‚数并且是按照 $1, $2, .. $n 的顺åºè¢«èµ‹å€¼çš„。如果没有给定 ARG å‚数，则打å°æ‰€æœ‰çš„ shell å˜é‡ã€‚ 退出状æ€ï¼š 返回æˆåŠŸé™¤éžä½¿ç”¨äº†æ— æ•ˆçš„å‚数。设置å˜é‡çš„值和属性。 `declare' 的等价形å¼ã€‚å‚è§ `help declare'。Shell 命令匹é…关键字“Shell 选项: 移ä½ä½ç½®å‚数。 é‡å‘½åä½ç½®å‚æ•° $N+1ã€$N+2 ... 到 $1ã€$2 ... 如果没有给定 N， 则å‡è®¾ä¸º1. 退出状æ€ï¼š 返回æˆåŠŸï¼Œé™¤éž N 为负或者大于 $#ã€‚ä¿¡å· %då·²åœæ­¢å·²åœæ­¢(ä¿¡å·)å·²åœæ­¢(tty 输入)å·²åœæ­¢(tty 输出)å·²åœæ­¢(%s)挂起 shell 执行。 挂起 shell 的执行直到收到 SIGCONT ä¿¡å·ã€‚ 登录 shell ä¸å¯ä»¥è¢«æŒ‚起，除éžå¼ºåˆ¶æ‰§è¡Œã€‚ 选项： -f 强制挂起，å³ä½¿æ˜¯ç™»å½• shell。 退出状æ€ï¼š 返回æˆåŠŸï¼Œé™¤éžæ²¡æœ‰å¯ç”¨ä»»åŠ¡æŽ§åˆ¶æˆ–者有错误å‘生。时间格å¼: `%c': 无效的格å¼å­—符已终止%s 中的邮件已被读过 有è¿è¡Œä¸­çš„任务。 有åœæ­¢çš„任务。 在法律许å¯çš„情况下特此明示，本软件ä¸æ供任何担ä¿ã€‚这些 shell 命令是内部定义的。请输入 `help' 以获å–一个列表。 输入 `help å称' 以得到有关函数`å称'的更多信æ¯ã€‚ 使用 `info bash' æ¥èŽ·å¾—关于 shell 的更多一般性信æ¯ã€‚ 使用 `man -k' 或 `info' æ¥èŽ·å–ä¸åœ¨åˆ—表中的命令的更多信æ¯ã€‚ å称æ—边的星å·(*)表示该命令被ç¦ç”¨ã€‚ 本软件是自由软件，您å¯ä»¥è‡ªç”±åœ°æ›´æ”¹å’Œé‡æ–°å‘布。对信å·å’Œå…¶ä»–事件设陷阱。 定义一个处ç†å™¨ï¼Œåœ¨ shell 接收到信å·å’Œå…¶ä»–æ¡ä»¶ä¸‹æ‰§è¡Œã€‚ ARG å‚数是当 shell 接收到 SIGNAL_SPEC ä¿¡å·æ—¶è¯»å–和执行的命令。 如果没有指定 ARG å‚æ•° (并且åªç»™å‡ºä¸€ä¸ª SIGNAL_SPEC ä¿¡å·) 或者 ARG å‚数为 `-'，æ¯ä¸€ä¸ªæŒ‡å®šçš„å‚数会被é‡ç½®ä¸ºåŽŸå§‹å€¼ã€‚如果 ARG å‚数是一个空串，则æ¯ä¸€ä¸ª SIGNAL_SPEC ä¿¡å·ä¼šè¢« shell 和它å¯åŠ¨çš„命令忽略。 如果一个 SIGNAL_SPEC ä¿¡å·æ˜¯ EXIT (0) ，则 ARG 命令会在 shell 退出时被 执行。如果一个 SIGNAL_SPEC ä¿¡å·æ˜¯ DEBUG，则 ARG命令会在æ¯ä¸€ä¸ªç®€å•å‘½ 令之å‰æ‰§è¡Œã€‚ 如果ä¸æä¾›å‚数，trap 打å°åˆ—表显示æ¯ä¸€ä¸ªä¸Žæ¯ä¸€ä¸ªä¿¡å·ç›¸å…³è”的命令。 选项： -l 打å°ä¸€ä¸ªä¿¡å·å称和它们对应的编å·çš„列表 -p 打å°ä¸Žæ¯ä¸ª SIGNAL_SPEC ä¿¡å·ç›¸å…³è”的陷阱命令 æ¯ä¸€ä¸ª SIGNAL_SPEC ä¿¡å·å¯ä»¥æ˜¯ 中的信å·å称或者信å·ç¼–å·ã€‚ ä¿¡å·å称大å°å†™æ•æ„Ÿä¸”å¯ä»¥ä½¿ç”¨ SIG å‰ç¼€ã€‚ä¿¡å·å¯ç”¨ "kill -ä¿¡å· $$" å‘é€ç»™ shell。 退出状æ€ï¼š 返回æˆåŠŸï¼Œé™¤éžä½¿ç”¨äº†æ— æ•ˆçš„选项或者 SIGSPEC。请输入`%s -c "help set"' 以获得关于 shell é€‰é¡¹çš„æ›´å¤šä¿¡æ¯ è¯·è¾“å…¥ `%s -c help' 以获得关于 shell 内建命令的更多信æ¯. æœªçŸ¥ä¿¡å· #%d未知错误未知状æ€å–消设定 shell å˜é‡å’Œå‡½æ•°çš„值和属性。 对æ¯ä¸€ä¸ª NAME å称，删除对应的å˜é‡æˆ–函数。 选项： -f å°†æ¯ä¸ª NAME 视为函数 -v å°†æ¯ä¸ª NAME 视为å˜é‡ -n å°†æ¯ä¸ª NAME 视为å称引用，åªå–消其本身而éžå…¶æŒ‡å‘çš„å˜é‡ ä¸å¸¦é€‰é¡¹æ—¶ï¼Œunset 首先å°è¯•å–消设定一个å˜é‡ï¼Œå¦‚果失败，å†å°è¯•å–消设定一个函数。 æŸäº›å˜é‡ä¸å¯ä»¥è¢«å–消设定；å‚è§ `readonly'。 退出状æ€ï¼š 返回æˆåŠŸï¼Œé™¤éžä½¿ç”¨äº†æ— æ•ˆçš„选项或者 NAME å称为åªè¯»ã€‚紧急 I/O 状况用法： %s [GNU 长选项] [选项] ... %s [GNU 长选项] [选项] 脚本文件 ... 使用 "%s" 退出 shell 。 请使用“bashbugâ€å‘½ä»¤æ¥æŠ¥å‘Šç¨‹åºé”™è¯¯ã€‚ 请将翻译错误报告到 。 用户信å·1用户信å·2等待进程完æˆå¹¶ä¸”返回退出状æ€ã€‚ 等待指定进程并报告它的终止状æ€ã€‚如果没有æä¾› PID，则当å‰æ‰€æœ‰çš„活跃 å­è¿›ç¨‹éƒ½ä¼šè¢«ç­‰å¾…，并且返回ç ä¸ºé›¶ã€‚PID 必须为进程å·ã€‚ 退出状æ€ï¼š 返回进程 ID 的状æ€ï¼›å¦‚æžœ PID 是无效的进程å·æˆ–者指定了无效的选项则失败。窗å£å·²æ”¹å˜å†™å‚数至标准输出设备。 在标准输出设备上显示 ARGs å‚数和一个æ¢è¡Œã€‚ 选项： -n ä¸é™„加æ¢è¡Œ 退出状æ€ï¼š 除éžå†™é”™è¯¯å‘生，å¦åˆ™è¿”回æˆåŠŸã€‚å°†å‚数写到标准输出。 在标准输出上，显示用空格分割的 ARG å‚æ•°åŽè·Ÿä¸€ä¸ªæ¢è¡Œã€‚ 选项： -n ä¸è¦è¿½åŠ æ¢è¡Œ -e å¯ç”¨ä¸‹åˆ—åæ–œæ è½¬ä¹‰çš„解释 -E 显å¼åœ°æŠ‘制对于åæ–œæ è½¬ä¹‰çš„解释 `echo' 对下列åæ–œæ å­—符进行转义：  警告(å“铃) \b 退格 \c 抑制更多的输出 \e 转义字符 \f æ¢é¡µå­—符 \n æ¢è¡Œ \r 回车 \t 横å‘制表符 \v 纵å‘制表符 \\ åæ–œæ  \0nnn 以 NNN（八进制）为 ASCII ç çš„字符。NNN å¯ä»¥æ˜¯ 0 到 3 ä¸ªå…«è¿›åˆ¶ä½ \xHH 以 HH（å六进制）为值的八比特字符。HH å¯ä»¥æ˜¯ä¸€ä¸ªæˆ–两个åå…­è¿›åˆ¶ä½ \uHHHH 以 HHHH（å六进制）为值的 Unicode 字符。HHHH å¯ä»¥æ˜¯ä¸€ä¸ªåˆ° 四个å六进制ä½ã€‚ \UHHHHHHHH 以 HHHHHHHH（å六进制）为值的 Unicode 字符。 HHHHHHHH å¯ä»¥æ˜¯ä¸€åˆ°å…«ä¸ªå六进制ä½ã€‚ 退出状æ€ï¼š 返回æˆåŠŸé™¤éžæœ‰å†™é”™è¯¯å‘生。您在 $_ 中有邮件您在 $_ 中有新邮件[ å‚æ•°... ][[ è¡¨è¾¾å¼ ]]“%câ€ï¼šå‘½ä»¤é”™è¯¯â€œ%câ€ï¼šæ— æ•ˆæ ¼å¼å­—符“%câ€ï¼šæ— æ•ˆçš„符å·çŠ¶æ€å­—符“%câ€ï¼šæ— æ•ˆçš„符å·çŠ¶æ€è¿ç®—符“%câ€ï¼šæ— æ•ˆçš„时间格å¼å£°æ˜Žâ€œ%sâ€: 无法解除绑定“%sâ€: 无效的别å“%sâ€: 无效的键映射å“%sâ€: 无效的å称引用å˜é‡å“%sâ€: 特殊内建“%sâ€: 缺少格å¼å­—符“%sâ€: ä¸æ˜¯æœ‰æ•ˆçš„进程å·æˆ–者任务声明“%sâ€: ä¸æ˜¯æœ‰æ•ˆçš„标识符“%sâ€: 未知函数å需è¦â€œ)â€éœ€è¦â€œ)â€ï¼Œå´æ‰¾åˆ° %sæ¡ä»¶è¡¨è¾¾å¼éœ€è¦ `:'add_process: è¿›ç¨‹å· %5ld(%s) 标注为ä»æ´»ç€alias [-p] [å称[=值] ... ]all_local_variables: 当å‰ä½œç”¨åŸŸä¸­æ²¡æœ‰å‡½æ•°ä¸Šä¸‹æ–‡å‚数需è¦å‚数需è¦æ•°ç»„å˜é‡æ”¯æŒå°è¯•ç»™éžå˜é‡èµ‹å€¼æ•°ç»„下标ä¸æ­£ç¡®é”™è¯¯çš„命令类型错误的æ¡ä»¶è¿žæŽ¥ç¬¦é”™è¯¯çš„跳转错误的替æ¢: 在 %s 中没有闭åˆçš„ "`"错误的替æ¢: 在 %2$s 中没有闭åˆçš„ `%1$s'bash 首页： bash_execute_unix_command: 无法为命令找到键映射bg [任务声明 ...]bind [-lpvsPSVX] [-m 键映射] [-f 文件å] [-q å称] [-u å称] [-r é”®åºåˆ—] [-x é”®åºåˆ—:shell-命令] [é”®åºåˆ—:readline-函数 或 readline-命令]大括å·å±•å¼€ï¼šæ— æ³•ä¸º %s 分é…内存大括å·å±•å¼€ï¼šä¸º %u 个元素分é…内存失败大括å·å±•å¼€ï¼šä¸ºâ€œ%sâ€åˆ†é…内存失败break [n]错误：表达å¼èµ‹å€¼ç¬¦å·é”™è¯¯builtin [shell 内建 [å‚æ•° ...]]caller [表达å¼]åªèƒ½ä»Žå‡½æ•°æˆ–者æºè„šæœ¬è¿”回(`return')åªèƒ½åœ¨å‡½æ•°ä¸­ä½¿ç”¨æ— æ³•ä»Žæ–‡ä»¶æ述符 %d 为 bash 的输入获å–一个新的文件æ述符无法为立å³æ–‡æ¡£åˆ›å»ºä¸´æ—¶æ–‡ä»¶: %s无法å¤åˆ¶æ–‡ä»¶æ述符 %d 到文件æ述符 %d无法将命åç®¡é“ %s 作为文件æ述符 %d å¤åˆ¶æ— æ³•åœ¨å…±äº«å¯¹è±¡ %2$s 中找到 %1$s: %3$s无法为命令替æ¢åˆ›å»ºå­è¿›ç¨‹æ— æ³•ä¸ºè¿›ç¨‹æ›¿æ¢åˆ›å»ºå­è¿›ç¨‹æ— æ³•ä¸ºå‘½ä»¤æ›¿æ¢åˆ›å»ºç®¡é“无法为进程替æ¢åˆ›å»ºç®¡é“无法打开命åç®¡é“ %s 以读å–无法打开命åç®¡é“ %s 进行写入无法打开共享对象 %s：%s无法从 /dev/null é‡å®šå‘标准输入: %s无法为文件æ述符 %d é‡ç½®nodelay模å¼æ— æ³•åŒæ—¶è®¾å®šå’Œå–消设定 shell 选项无法将 gid 设为 %d: 有效 gid %d无法设定终端进程组(%d)无法将 uid 设为 %d: 有效 uid %d无法åŒæ—¶å–消设定一个函数和一个å˜é‡æ— æ³•å¯åŠ¨è°ƒè¯•å™¨ï¼›è°ƒè¯•æ¨¡å¼å·²ç¦ç”¨æ— æ³•æŒ‚起无法挂起一个登录 shell无法用 `-f' 生æˆå‡½æ•°æœ€å¤šåªèƒ½ä½¿ç”¨ -anrw 选项中的一个case è¯ in [æ¨¡å¼ [| 模å¼]...) 命令 ;;]... esaccd [-L|[-P [-e]] [-@]] [目录]å­è¿›ç¨‹ setpgid (%ld 到 %ld)command [-pVv] 命令 [å‚æ•° ...]命令替æ¢ï¼šå¿½ç•¥è¾“入中的 null 字节command_substitute: 无法将管é“å¤åˆ¶ä¸ºæ–‡ä»¶æ述符 1补全：未找到函数 “%sâ€compopt [-o|+o 选项] [-DEI] [å称 ...]需è¦äºŒå…ƒæ¡ä»¶è¿ç®—符continue [n]coproc [å称] 命令 [é‡å®šå‘]无法找到 /tmp ，请创建ï¼cprintf: `%c': 无效的格å¼å­—符当å‰åˆ é™¤è¿›ç¨‹ç»„ %2$ld 中已åœæ­¢çš„任务 %1$ddescribe_pid: %ld: 无此进程å·ç›®å½•æ ˆä¸ºç©ºç›®å½•æ ˆç´¢å¼•dirs [-clpv] [+N] [-N]disown [-h] [-ar] [任务声明 ... | pid ...]除以 0动æ€åŠ è½½ä¸å¯ç”¨echo [-n] [å‚æ•° ...]echo [-neE] [å‚æ•° ...]空数组å˜é‡åenable [-a] [-dnps] [-f 文件å] [å称 ...]获å–终端属性时出错: %s“%sâ€å‡½æ•°å®šä¹‰å¯¼å…¥é”™è¯¯è®¾å®šç»ˆç«¯å±žæ€§æ—¶å‡ºé”™: %seval [å‚æ•° ...]eval: 超出最大 eval 嵌套层数 (%d)execute_coproc: 副进程 [%d:%s] ä»ç„¶å­˜åœ¨exit [n]需è¦â€œ)â€æŒ‡æ•°å°äºŽ 0export [-fn] [å称[=值] ...] 或 export -p需è¦è¡¨è¾¾å¼è¡¨è¾¾å¼é€’归层次越界fc [-e 编辑器å] [-lnr] [起始] [终结] 或 fc -s [模å¼=替æ¢ä¸²] [命令]fg [任务声明]文件æ述符超出范围需è¦æ–‡ä»¶åå‚æ•°for (( 表达å¼1; 表达å¼2; 表达å¼3 )); do 命令; donefor å称 [in è¯è¯­ ... ] ; do 命令; doneå‰åˆ† (fork) å‡ºçš„çš„è¿›ç¨‹å· %d 出现在è¿è¡Œä¸­çš„任务 %d 中格å¼è§£æžé—®é¢˜: %sfree：调用时用了已ç»é‡Šæ”¾çš„å—作为å‚æ•°free: 调用时用了未分é…çš„å—作为å‚æ•°free: 其实和末尾å—大å°ä¸ä¸€è‡´free: 检测到下溢；mh_nbytes 越界function å称 { 命令 ; } 或 name () { 命令 ; }未æ¥ç‰ˆæœ¬çš„ shell 会强制估值为算术替æ¢getcwd: 无法访问父目录hash [-lr] [-p 路径å] [-dt] [å称 ...]å·²ç¦ç”¨å“ˆå¸Œhelp [-dms] [æ¨¡å¼ ...]此版本内帮助ä¸å¯ç”¨ç«‹å³æ–‡æ¡£åœ¨ç¬¬ %d 行被文件结æŸç¬¦åˆ†éš” (需è¦â€œ%sâ€)history [-c] [-d å移é‡] [n] 或 history -anrw [文件å] 或 history -ps å‚æ•° [å‚æ•°...]历å²ä½ç½®åŽ†å²å£°æ˜Žå‘½ä¸­ 命令 预增符或预å‡ç¬¦åŽåº”跟有标识符if 命令; then 命令; [ elif 命令; then 命令; ]... 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