groupadd

Sommaire

NAME

groupadd - Create a new group

SYNOPSIS

groupadd [-g gid [-o ]] [-f] [-r] [-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 499 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.
-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.

FILES

/etc/group
group account information
/etc/gshadow
secure group account information

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 ALSO

chfn(1), chsh(1), passwd(1), gpasswd(8), groupdel(8), groupmod(8), useradd(8), userdel(8), usermod(8)

AUTHOR

Julianne Frances Haugh (jockgrrl@ix.netcom.com)