리눅스 command

다른 뜻에 대해서는 Command 패턴 문서를 참조하십시오.

다른 뜻에 대해서는 명령어 문서를 참조하십시오.

1 개요

리눅스 command

명령어를 실행하는 명령어
Bash 빌트인 명령어 중 하나

root@zetawiki:~# type command
command is a shell builtin

root@zetawiki:~# command --help
command: command [-pVv] command [arg ...]
    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.

root@zetawiki:~# ls /var
backups  cache  lib  local  lock  log  mail  opt  run  spool  tmp  www
root@zetawiki:~# command ls /var
backups  cache  lib  local  lock  log  mail  opt  run  spool  tmp  www
root@zetawiki:~# command -p ls /var
backups  cache  lib  local  lock  log  mail  opt  run  spool  tmp  www

2 -v

root@zetawiki:~# command -v sed
/bin/sed
root@zetawiki:~# which sed
/bin/sed

root@zetawiki:~# command -v ls /var
alias ls='ls $LS_OPTIONS'
root@zetawiki:~# command -v ls
alias ls='ls $LS_OPTIONS'
root@zetawiki:~# alias ls
alias ls='ls $LS_OPTIONS'

3 -V

root@zetawiki:~# command -V sed
sed is hashed (/bin/sed)
root@zetawiki:~# type sed
sed is hashed (/bin/sed)

root@zetawiki:~# command -V ls /var
ls is aliased to `ls $LS_OPTIONS'
-bash: command: /var: not found
root@zetawiki:~# command -V ls
ls is aliased to `ls $LS_OPTIONS'
root@zetawiki:~# alias ls
alias ls='ls $LS_OPTIONS'
root@zetawiki:~# type ls
ls is aliased to `ls --color=auto'

4 같이 보기

5 참고

http://ss64.com/bash/command.html