Commands Help : groupadd | groupdel | groupmod

•  create a new group

[SYNOPSIS] groupadd OPTION GROUP

option

-g	use GID for the new group # groupadd -g 510 group

[SYNOPSIS] groupdel GROUP

• modify a group definition on the system

[SYNOPSIS] groupmod OPTION GROUP

option

-n	change the name to NEW_GROUP # groupmod -n new_name group
-g	change the group ID to GID # groupmod -g 600 group