리눅스 help

1 개요

리눅스 help
Bash 내장 명령어 중 하나
Bash 내장 명령어에 대한 간단한 도움말 제공
root@zetawiki:~# help
GNU bash, version 4.3.11(1)-release (x86_64-pc-linux-gnu)
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.

 job_spec [&]                                       history [-c] [-d offset] [n] or history -anrw [>
 (( expression ))                                   if COMMANDS; then COMMANDS; [ elif COMMANDS; th>
 . filename [arguments]                             jobs [-lnprs] [jobspec ...] or jobs -x command >
 :                                                  kill [-s sigspec | -n signum | -sigspec] pid | >
 [ arg... ]                                         let arg [arg ...]
 [[ expression ]]                                   local [option] name[=value] ...
 alias [-p] [name[=value] ... ]                     logout [n]
 bg [job_spec ...]                                  mapfile [-n count] [-O origin] [-s count] [-t] >
 bind [-lpsvPSVX] [-m keymap] [-f filename] [-q n>  popd [-n] [+N | -N]
 break [n]                                          printf [-v var] format [arguments]
 builtin [shell-builtin [arg ...]]                  pushd [-n] [+N | -N | dir]
 caller [expr]                                      pwd [-LP]
 case WORD in [PATTERN [| PATTERN]...) COMMANDS ;>  read [-ers] [-a array] [-d delim] [-i text] [-n>
 cd [-L|[-P [-e]] [-@]] [dir]                       readarray [-n count] [-O origin] [-s count] [-t>
 command [-pVv] command [arg ...]                   readonly [-aAf] [name[=value] ...] or readonly >
 compgen [-abcdefgjksuv] [-o option]  [-A action]>  return [n]
 complete [-abcdefgjksuv] [-pr] [-DE] [-o option]>  select NAME [in WORDS ... ;] do COMMANDS; done
 compopt [-o|+o option] [-DE] [name ...]            set [-abefhkmnptuvxBCHP] [-o option-name] [--] >
 continue [n]                                       shift [n]
 coproc [NAME] command [redirections]               shopt [-pqsu] [-o] [optname ...]
 declare [-aAfFgilnrtux] [-p] [name[=value] ...]    source filename [arguments]
 dirs [-clpv] [+N] [-N]                             suspend [-f]
 disown [-h] [-ar] [jobspec ...]                    test [expr]
 echo [-neE] [arg ...]                              time [-p] pipeline
 enable [-a] [-dnps] [-f filename] [name ...]       times
 eval [arg ...]                                     trap [-lp] [[arg] signal_spec ...]
 exec [-cl] [-a name] [command [arguments ...]] [>  true
 exit [n]                                           type [-afptP] name [name ...]
 export [-fn] [name[=value] ...] or export -p       typeset [-aAfFgilrtux] [-p] name[=value] ...
 false                                              ulimit [-SHabcdefilmnpqrstuvxT] [limit]
 fc [-e ename] [-lnr] [first] [last] or fc -s [pa>  umask [-p] [-S] [mode]
 fg [job_spec]                                      unalias [-a] name [name ...]
 for NAME [in WORDS ... ] ; do COMMANDS; done       unset [-f] [-v] [-n] [name ...]
 for (( exp1; exp2; exp3 )); do COMMANDS; done      until COMMANDS; do COMMANDS; done
 function name { COMMANDS ; } or name () { COMMAN>  variables - Names and meanings of some shell va>
 getopts optstring name [arg]                       wait [-n] [id ...]
 hash [-lr] [-p pathname] [-dt] [name ...]          while COMMANDS; do COMMANDS; done
 help [-dms] [pattern ...]                          { COMMANDS ; }
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