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List Groups A User Belongs To In Ubuntu

Still seeing this request quite frequently in my website logs, I thought I'd expand the topic a bit more, given the fact that I've somehow left out the most obvious way to confirm the group membership for a Ubuntu user.

Group membership in Ubuntu

Every Unix-like OS is bound to have a group command, which is aimed to help you confirm Unix group membership for any user known to your system.

The easiest it to run it and specify a username in command line. The result is a list of Ubuntu groups:

groups greys

greys : admin www-data

If you're looking at confirming the membership for a few users, you can specify usernames in the same command line:

groups greys root

greys : admin www-data
root : root

Resources: unixtutorial


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