Hi Satish,
Do the users get the prompt the instant they login?
Or does it show up later - like after they've run something.
If it's right away, I'd look at everything in /etc/profile & the user's profiles to see if a script may be exporting a PS1 value.
If it's after something's been run, I'd certainly check it & anything that it calls.
Rgds,
Jeff
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