[CentOS] [OT] List of all email users

This is not CentOS-specific, hence OT.

I need a list of all email users on my system (there are hundreds of them). The list could be extracted from /etc/aliases and the virtusertable.

Does anyone know of a script that would do this automatically? It would have to - exclude commented-out lines (of course) - exclude duplicates - produce a list of usernames (or maybe unresolved email addresses for some users) separated by a comma

I imagine perl would be the way to go. I haven't used perl at all myself.

Regards, Jussi

-- Jussi Hirvi * Green Spot Topeliuksenkatu 15 C * 00250 Helsinki * Finland Tel. & fax +358 9 493 981 * Mobile +358 40 771 2098 (only sms) jussi.hirvi@greenspot.fi * http://www.greenspot.fi