Provided by: passwd_4.1.4.2+svn3283-3ubuntu5_i386 bug


       groupadd - create a new group


       groupadd [options] group


       The groupadd command creates a new group account using the values
       specified on the command line plus 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, --force
           This option causes the command to simply exit with success status
           if the specified group already exists. When used with -g, and the
           specified GID already exists, another (unique) GID is chosen (i.e.
           -g is turned off).

       -g, --gid 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 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, --non-unique
           This option permits to add a group with a non-unique GID.

       -p, --password PASSWORD
           The encrypted password, as returned by crypt(3). The default is to
           disable the password.

           Note: This option is not recommended because the password (or
           encrypted password) will be visible by users listing the processes.

           You should make sure the password respects the system's password

       -r, --system
           Create a system group.

           The numeric identifiers of new system groups are chosen in the
           SYS_GID_MIN-SYS_GID_MAX range, defined in login.defs, instead of


       The following configuration variables in /etc/login.defs change the
       behavior of this tool:

       GID_MAX (number), GID_MIN (number)
           Range of group IDs used for the creation of regular groups by
           useradd, groupadd, or newusers.

       MAX_MEMBERS_PER_GROUP (number)
           Maximum members per group entry. When the maximum is reached, a new
           group entry (line) is started in /etc/group (with the same name,
           same password, and same GID).

           The default value is 0, meaning that there are no limits in the
           number of members in a group.

           This feature (split group) permits to limit the length of lines in
           the group file. This is useful to make sure that lines for NIS
           groups are not larger than 1024 characters.

           If you need to enforce such limit, you can use 25.

           Note: split groups may not be supported by all tools (even in the
           Shadow toolsuite). You should not use this variable unless you
           really need it.

       SYS_GID_MAX (number), SYS_GID_MIN (number)
           Range of group IDs used for the creation of system groups by
           useradd, groupadd, or newusers.


           Group account information.

           Secure group account information.

           Shadow password suite configuration.


       It is usually recommended to only use groupnames that begin with a
       lower case letter or an underscore, followed by lower case letters,
       digits, underscores, or dashes. They can end with a dollar sign. In
       regular expression terms: [a-z_][a-z0-9_-]*[$]?

       On Debian, the only constraints are that groupnames must neither start
       with a dash ('-') nor contain a colon (':') or a whitespace (space:' ',
       end of line: '\n', tabulation: '\t', etc.).

       Groupnames may only be up to 32 characters long.

       You may not add a NIS or LDAP group. This must be performed on the
       corresponding server.

       If the groupname already exists in an external group database such as
       NIS or LDAP, groupadd will deny the group creation request.


       The groupadd command exits with the following values:


           invalid command syntax

           invalid argument to option

           GID not unique (when -o not used)

           group name not unique

           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).