Provided by: passwd_4.0.13-7ubuntu3_i386 bug


       groupadd - Create a new group


       groupadd [-g gid [-o]] [-f] [-K KEY=VALUE] group


       The groupadd command creates a new group account using the values
       specified on the command line and the default values from the system.
       The new group will be entered into the system files as needed.


       The options which apply to the groupadd command are:

       -f     This option causes to just exit with success status if the
              specified group already exists. With -g, if specified gid
              already exists, other (unique) gid is chosen (i.e.  -g is turned

       -g GID The numerical value of the group’s ID. This value must be
              unique, unless the -o option is used. The value must be
              non-negative. The default is to use the smallest ID value
              greater than 999 and greater than every other group. Values
              between 0 and 999 are typically reserved for system accounts.

       -h, --help
              Display help message and exit.

       -K KEY=VALUE
              Overrides /etc/login.defs defaults (GID_MIN, GID_MAX and
              others). Multiple -K options can be specified.

              Example: -K GID_MIN=100 -K GID_MAX=499

              Note: -K GID_MIN=10,GID_MAX=499 doesn’t work yet.

       -o     This option permits to add group with non-unique GID.


              group account information

              secure group account information

              shadow password suite configuration


       Groupnames must begin with a lower case letter or an underscore, and
       only lower case letters, underscores, dashes, and dollar signs may
       follow. In regular expression terms: [a-z_][a-z0-9_-]*[$]

       Groupnames may only be up to 16 characters long.


       The groupadd command exits with the following values:

       0      success

       2      invalid command syntax

       3      invalid argument to option

       4      gid not unique (when -o not used)

       9      group name not unique

       10     can’t update group file


       chfn(1), chsh(1), passwd(1), gpasswd(8), groupdel(8), groupmod(8),
       login.defs(5), useradd(8), userdel(8), usermod(8).


       Julianne Frances Haugh (

                                  09/30/2005                       GROUPADD(8)