GROUPADD(8) System Management Commands GROUPADD(8)NAMEgroupadd - Create a new group
SYNOPSISgroupadd [-g GID [-o]] [-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).
-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.
FILES
/etc/group
group account information
/etc/gshadow
secure group account information
/etc/login.defs
shadow password suite configuration
CAVEATS
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.
If the groupname already exists in an external group database such as
NIS, groupadd will deny the group creation request.
Groupnames may only be up to 16 characters long.
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 01/02/2006 GROUPADD(8)
