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Ok. I will start by thanking you. It was an online test that didn't help much. I was in a hurry because of the timer.

But what was wrong with that line in the first place?

this is exam

Hi guys. I would need some help really fast..

I have to show a user as a parameter and its group. If the user doesn't exist the script will show "user doesn't exist".
How could I do that?
UNIX