[PLUG] Finding a /etc/group entry containing a user list

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• From: JP Vossen <jp@jpsdomain.org>
• To: plug@lists.phillylinux.org
• Subject: [PLUG] Finding a /etc/group entry containing a user list
• Date: 2011年11月12日 14:27:52 -0500
• Reply-to: Philadelphia Linux User's Group Discussion List <plug@lists.phillylinux.org>
• Sender: plug-bounces@lists.phillylinux.org
• User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.23) Gecko/20110921 Thunderbird/3.1.15

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I have a list of 10 users and I'd like to see if there is an entry in /etc/group that already contains all or most of them. Unfortunately, the /etc/group file is large, not well maintained, and not sorted in any way at all. If there is not a group that contains all the users, I'd like a list of the groups that contain the most because I may be able to just add the missing ones. I thought of chaining a bunch of greps together, but that's ugly, not scalable, and won't give me a list of partial matches. I know I could write some Perl (or whatever) code to do this, but does anyone have a better trick?

Thanks,
JP
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    • From: Rich Freeman <r-plug@thefreemanclan.net>

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