$ curl cheat.sh/

# 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

$

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