cmd/usermod

Basics

usermod is a command for modifying users on a Linux system.

• manpage for this system

How To

Assign a user to an additional (non-primary) group:

• usermod -a -G <groupname> <username>

Note that if you are adding yourself to another group, the new membership will not take effect unless you log in again (even if you open a new terminal session). To do this without logging out of your GUI session, use sudo login <your username> (not sure the last parameter is required).

Related

• Linux/groups: Linux user/group commands
• groups: list what groups a user is in
• /archive/Red Hat 7: 2005 transcription of Red Hat 7 manpage