System administration command. Create a new user group.
This option is useful for scripts. When specified the command will exit without error if the group being added already exists. If a gid requested with -g already exists and the -o option has not been specified, assign a different gid as if -g had not been specified. This option is not available on all distributions.
Assign numerical group ID. (By default, the first available number above 500 is used.) The value must be unique, unless the -o option is used.
Override defaults in /etc/login.defs.
Accept a nonunique gid with the -g option.
Set the password for the group. string must already be encrypted appropriately for the system.
Add a system account. Assign the first available number lower than 499.
Display a very short list of acceptable options for the command.