bash shell 프롬프트용 변수

Posted at 2010/04/16 13:41 // in Tips // by Daniel

bash man page에서 퍼옴.

       When executing interactively, bash displays the primary prompt PS1 when
       it is ready to read a command, and the secondary  prompt  PS2  when  it
       needs  more  input  to  complete  a  command.  Bash allows these prompt
       strings to be customized by inserting  a  number  of  backslash‐escaped
       special characters that are decoded as follows:
              \a     an ASCII bell character (07)
              \d     the  date  in "Weekday Month Date" format (e.g., "Tue May
                     the format is passed to strftime(3)  and  the  result  is
                     inserted  into the prompt string; an empty format results
                     in a locale‐specific time representation.  The braces are
              \e     an ASCII escape character (033)
              \h     the hostname up to the first ‘.’
              \H     the hostname
              \j     the number of jobs currently managed by the shell
              \l     the basename of the shell’s terminal device name
              \n     newline
              \r     carriage return
              \s     the  name  of  the shell, the basename of $0 (the portion
                     following the final slash)
              \t     the current time in 24‐hour HH:MM:SS format
              \T     the current time in 12‐hour HH:MM:SS format
              \@     the current time in 12‐hour am/pm format
              \A     the current time in 24‐hour HH:MM format
              \u     the username of the current user
              \v     the version of bash (e.g., 2.00)
              \V     the release of bash, version + patch level (e.g., 2.00.0)
              \w     the  current  working  directory,  with $HOME abbreviated
                     with a tilde
              \W     the basename of the current working directory, with $HOME
                     abbreviated with a tilde
              \!     the history number of this command
              \#     the command number of this command
              \$     if the effective UID is 0, a #, otherwise a $
              \nnn   the character corresponding to the octal number nnn
              \\     a backslash
              \[     begin  a sequence of non‐printing characters, which could
                     be used to embed a terminal  control  sequence  into  the
              \]     end a sequence of non‐printing characters


예를 들어

$export PS1='\s−\v\$ '

$ export PS1='\T−\v\$ '

$ export PS1='\W \@\$ '
~ 01:40 PM$

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