tldr/pages/linux/groupmod.md

groupmod

Modify existing user groups in the system. See also: groups, groupadd, groupdel. More information: https://manned.org/groupmod.

• Change the group name:

sudo groupmod --new-name {{new_group}} {{group_name}}

• Change the group id:

sudo groupmod --gid {{new_id}} {{group_name}}