GROUPMOD(8)		  System Management Commands		   GROUPMOD(8)



NAME
       groupmod - modify a group definition on the system

SYNOPSIS
       groupmod [options] GROUP

DESCRIPTION
       The groupmod command 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
	   The group ID of the given GROUP will be changed to GID. The value
	   of 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 that have the old
	   group ID and must continue to belong to GROUP, must have their
	   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 a
	   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	  10/28/2007			   GROUPMOD(8)