delgroup

Delete a group

$ sudo delgroup [groupname]

$ sudo delgroup [username] [groupname]

$ sudo delgroup --system [groupname]

$ sudo delgroup --only-if-empty [groupname]

delgroup [options] group
delgroup [options] user group

delgroup removes a group from the system or removes a user from a group. It's the Debian/Ubuntu counterpart to groupdel with additional safety features.
When called with just a group name, it deletes the group. With both user and group names, it removes the user from that group without deleting the group.

--system

Only delete system groups.

Only delete if group has no members.

Suppress informational messages.

Display help information.

Display version.

Use alternate configuration.

Requires root privileges. Cannot delete a user's primary group while user exists. Files owned by deleted group keep numeric GID. Debian/Ubuntu specific command.

delgroup is part of the adduser package, created for Debian Linux to provide friendlier user/group management than the low-level commands. It wraps groupdel and gpasswd with additional checks and configuration options.

groupdel(1), deluser(1), addgroup(1), gpasswd(1)