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 499 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 the smallest ID value greater than 500 and greater than every other group. Values between 0 and 499 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 ALSO

chfn(1), chsh(1), passwd(1), gpasswd(8), groupdel(8), groupmod(8), login.defs(5), useradd(8), userdel(8), usermod(8).

Index

NAME

SYNOPSIS

DESCRIPTION

OPTIONS

FILES

CAVEATS

EXIT VALUES

SEE ALSO

Партнёры:

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