How do I find out when and by whom a particular user was deleted in linux?

Posted by executor21 on Super User See other posts from Super User or by executor21
Published on 2010-12-28T20:06:40Z Indexed on 2010/12/28 20:56 UTC
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linux

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user-accounts

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audit

I've recently ran into a very odd occurrence on one system I'm using. For no apparent reason, my user account was deleted, although the home directory is still there.

I have root access, so I can restore the account, but first, I want to know how this happened, and exactly when. Inspecting the root's .bash_history file and the "last" command gave nothing, and I'm (well, was) the only sudoer on the system.

How would I know when this deletion happened?

The distro is CentOS release 5.4 (Final), if that helps.

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