What is the difference between PS1 and PROMPT_COMMAND

Posted by Jed Daniels on Stack Overflow See other posts from Stack Overflow or by Jed Daniels
Published on 2010-06-17T01:27:29Z Indexed on 2010/06/17 1:32 UTC
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bash

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prompt

While taking a look at this awesome thread I noticed that some examples use

PS1="Blah Blah Blah"

and some use

PROMPT_COMMAND="Blah Blah Blah"

(and some use both) when setting the prompt in a bash shell. What is the difference between the two? An SO search and even a bit of broader google searching aren't getting me results, so even a link to the right place to look for the answer would be appreciated. Thanks!

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