Changing the Bash the prompt is easy. Just assign a new value to PS1:
PS1="myprompt : "
Now the new prompt will look like
myprompt :
Bash allows 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 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 '.'
* \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 characters
As an example lets create a prompt string that displays today's date and hostname:
PS1="\d \h $ "
Output is like
Sun Sep 04 ubuntu $
When you are happy with your prompt string you can make it the default prompt, even after rebooting by setting the PS1 var in .bashrc
Please ask this here where you will likely get more specific help than you would on SuperUser.
– Nathan Osman – 2010-09-09T19:25:38.710@george donno such a thing existed! Will do so. Thanks... – None – 2010-09-09T19:47:51.530
possible duplicate of Code challenge: Bash prompt path shortener
– Paused until further notice. – 2010-09-09T20:57:20.963