\d | the date in ``Weekday Month Date'' format |
\h | the host name up to the first |
\H | the host name |
\n | newline |
\s | the name of the shell, the base name of $0 |
\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 |
\u | the user name of the current user |
\w | the current working directory |
\! | the history number of this command |
\# | the command number of this command |
\$ | if the effective UID is 0, $ otherwise |
\W | the base name of the current working directory |