Vijay Valli Prasanna Roy

• Apr 19th, 2006

 

Unix/ Linux Supports four Prompts PS1, PS2, PS3, PS4

kcube

 Profile Answers by kcube 

• Nov 12th, 2006

 

PS1 Prompt used as the normal system promptPS2 Prompt used when the shell expects more inputPS3 Prompt used when you have root authority

Linux User

• Oct 29th, 2007

 

Bash supports 4 prompts:

PS1 - the default prompt
PS2 - for multi-line input
PS3 - printed for the select command
PS4 - printed before output if set -x is set

(see http:// www . gnu . org/software/bash/manual/bashref . html )
The first two are common to the Bourne shell (and ksh).  The last two are only for Bash.

csh, however, uses a completely different system.  Set the "prompt" variable.