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GROUPMOD(8) System Management Commands GROUPMOD(8) NAME groupmod - modify a group definition on the system SYNOPSIS groupmod [options] GROUP DESCRIPTION The groupmod modifies the definition of the specified GROUP by modifying the appropriate entry in the group database. OPTIONS The options which apply to the groupmod command are: -g, --gid GID Specify the new group ID for the GROUP. The numerical value of the GID must be a non-negative decimal integer. This value must be unique, unless the -o option is used. Values between 0 and 999 are typically reserved for system groups. Any files which the old group ID is the file group ID must have the file group ID changed manually. -h, --help Display help message and exit. -n, --new-name NEW_GROUP The name of the group will be changed from GROUP to NEW_GROUP name. -o, --non-unique When used with the -g option allow to change the group GID to non-unique value. FILES /etc/group Group account information. /etc/gshadow Secure group account information. EXIT VALUES The groupmod command exits with the following values: 0 success 2 invalid command syntax 3 invalid argument to option 4 specified group doesn't exist 6 specified group doesn't exist 9 group name already in use 10 can't update group file SEE ALSO chfn(1), chsh(1), passwd(1), gpasswd(8), groupadd(8), groupdel(8), useradd(8), userdel(8), usermod(8). System Management Commands 07/30/2006 GROUPMOD(8)