Linux / Unix : variables du prompt PS1

Le prompt Unix / Linux est défini par la variable PS1, généralement dans le .bashrc. Les variables suivantes peuvent être utilisées :

  • \a an ASCII bell character (07)
  • \d the date in "Weekday Month Date" format (e.g., "Tue May 26")
  • \D{format} - 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 required
  • \e an ASCII escape character (033)
  • \h the hostname up to the first part
  • \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
  • \[ begin a sequence of non-printing characters, which could be used to embed a terminal control sequence into the prompt
  • \] end a sequence of non-printing character

On utilise généralement les combinaisons :

export PS1="\u@\h \w> "

Exemple :

jdoe@laptop-jdoe /var/www/jdoe/sites/default/themes/vincentl >  

ou, plus concis

export PS1="\u@\h \W> "

Exemple :

jdoe@laptop-jdoe vincentl > 

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