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    Command:

    groupadd

    
    
    

    SYNOPSIS

           groupadd [options] group
    
    
    

    DESCRIPTION

           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.
    
    
    

    OPTIONS

           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
               policy.
    
           -r, --system
               Create a system group.
    
               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.
    
    
    

    FILES

           /etc/group
               Group account information.
    
           /etc/gshadow
               Secure group account information.
    
           /etc/login.defs
               Shadow password suite configuration.
    
    
    

    CAVEATS

           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.
    
    
    

    EXIT VALUES

           The groupadd command exits with the following values:
    
           0
               success
    
           2
               invalid command syntax
    
           3
               invalid argument to option
    
           4
    
    
    

    System Management Commands 07/24/2009 GROUPADD(8)

    
    
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