GROUPADD(8)                                                        GROUPADD(8)


       groupadd - Create a new group


       groupadd [-g gid [-o]] [-r] [-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

       -r     This flag instructs groupadd to add a system account.  The first
              available gid lower than 499 will be automatically selected
              unless the -g option is also given on the command line. This is
              an option added by Red Hat.

       -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 500 and greater than every other group. Values
              between 0 and 499 are typically reserved for system accounts.

       -K KEY=VALUE
              Overrides /etc/login.defs defaults (GID_MIN, GID_MAX and
              others). Multiple -K options can be specified, e.g.: -K
              GID_MIN=100 -K GID_MAX=499

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

       -o     Allow add group wit non-unique GID.


              group account information

              secure group account information


       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),
       useradd(8), userdel(8), usermod(8)


       Julianne Frances Haugh (

                                  08/03/2005                       GROUPADD(8)

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