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GROUPS(1) General Commands Manual GROUPS(1)

groupsshow group memberships

groups [user]

The groups utility has been obsoleted by the id(1) utility, and is equivalent to “id -Gn [user]”. The command “id -p” is suggested for normal interactive use.

The groups utility displays the groups to which you (or the optionally specified user) belong.

The groups utility exits 0 on success, and >0 if an error occurs.

Show groups the root user belongs to:

$ groups root
wheel operator

id(1)

June 6, 1993 macOS