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Groups on the Linux Command Line

March 9, 2010

Something I always forget how to do is create a new group on the command line and then add users to it. It is important to get these commands right as a missed option can really screw up the permissions for your user!

To create a new group called subversion:

sudo groupadd subversion

To add user foo to this group do:

usermod -a -G subversion foo

Missing the -a from the last command means foo will ONLY be a member of the subversion group, all other group associations are dropped.

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