Introduction to Unix

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5.5. PS1

The appearance of the command prompt is determined by the PS1 environment variable. This is often set in the ~/.bash_profile file. It may contain fixed characters and the following symbols.

PS1 Symbols
Symbol Meaning
\a an ASCII bell character (07)
\d the date in “Weekday Month Date” format (e.g., “Tue May 26”)
\D{format} the date - the format is passed to strftime(3)
\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
\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