7.2 Basics of Setting the Prompt

The prompt displayed by your shell is contained in a shell variable ( 6.8 ) called prompt in the C shell and PS1 in the Bourne shell. As such, it can be set like any other shell variable. [ bash and tcsh have plenty of extra features for those two variables. There are examples in later articles. -JP ]

So, for example, if I wanted to change my C shell prompt to include my login name, I might put the following command into my .cshrc file:

set prompt="tim % "

(It's helpful to leave the % at the end so that it remains obvious that this is a C shell. The space after the % makes the command you type stand out from the rest of the prompt.)

Or if I wanted to put in the name of the system I was currently logged in on, I might say:

`...`
 
uname -n
 

set prompt="`uname -n` % "

If I wanted to include the history number for each command, ( 11.1 ) I'd say:

set prompt="\! % "

Or if I wanted all three things:

set prompt="tim@`uname -n` \!% "

This will give me a prompt like this:

tim@isla 43%