GROUPADD(8) System Management Commands GROUPADD(8)NAMEgroupadd - create a new group
SYNOPSISgroupadd [-g gid [-o]] [-r] [-f] [-K KEY=VALUE] group
DESCRIPTION
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.
OPTIONS
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 off).
-r This flag instructs groupadd to add a system account. The first
available gid lower than GID_MIN 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 ID value equal to or greater than GID_MIN and
smaller than GID_MAX. Values between 0 and GID_MIN 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: Set the gid of range from 100 to 499.
# groupadd-K GID_MIN=100 -K GID_MAX=499 test
The new group "test" is added into /etc/group.
/etc/group test:x:105:
Note: This option does not work when arguments are separated by
comma.
(Example: -K GID_MIN=10,GID_MAX=499)
-o This option permits to add group with non-unique GID.
FILES
/etc/group
Group account information.
/etc/gshadow
Secure group account information.
/etc/login.defs
Shadow password suite configuration.
CAVEATS
If the groupname already exists in an external group database such as
NIS, 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 GID not unique (when -o not used)
9 group name not unique
10 can't update group file
SEE ALSOchfn(1), chsh(1), passwd(1), gpasswd(8), groupdel(8), groupmod(8),
login.defs(5), useradd(8), userdel(8), usermod(8).
System Management Commands 06/24/2006 GROUPADD(8)
