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  4. groupadd(8)

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groupadd(8) Команды управления системой groupadd(8)

ИМЯ

groupadd - создаёт новую группу

СИНОПСИС

groupadd [параметры] группа

ОПИСАНИЕ

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.

ПАРАМЕТРЫ

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 or equal to GID_MIN and greater than every other group.

See also the -r option and the GID_MAX description.

-h, --help

Показать краткую справку и закончить работу.

-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

Разрешить добавление группы с не уникальным 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.

Вы должны проверить, что пароль соответствует политике системных паролей.

-r, --system

Создать системную группу.

The numeric identifiers of new system groups are chosen in the SYS_GID_MIN-SYS_GID_MAX range, defined in login.defs, instead of GID_MIN-GID_MAX.

-R, --root CHROOT_DIR

Apply changes in the CHROOT_DIR directory and use the configuration files from the CHROOT_DIR directory.

-P, --prefix PREFIX_DIR

Apply changes in the PREFIX_DIR directory and use the configuration files from the PREFIX_DIR directory. This option does not chroot and is intended for preparing a cross-compilation target. Some limitations: NIS and LDAP users/groups are not verified. PAM authentication is using the host files. No SELINUX support.

-U, --users

A list of usernames to add as members of the group.

The default behavior (if the -g, -N, and -U options are not specified) is defined by the USERGROUPS_ENAB variable in /etc/login.defs.

НАСТРОЙКА

The following configuration variables in /etc/login.defs change the behavior of this tool:

ФАЙЛЫ

/etc/group

содержит информацию о группах

/etc/gshadow

содержит защищаемую информацию о группах

/etc/login.defs

содержит конфигурацию подсистемы теневых паролей

ПРЕДОСТЕРЕЖЕНИЯ

Groupnames may contain only lower and upper case letters, digits, underscores, or dashes. They can end with a dollar sign. Dashes are not allowed at the beginning of the groupname. Fully numeric groupnames and groupnames . or .. are also disallowed.

Groupnames may only be up to 32 characters long.

Нельзя добавить группу NIS или LDAP. Это необходимо делать на соответствующем сервере.

If the groupname already exists in an external group database such as NIS or LDAP, groupadd will deny the group creation request.

ВОЗВРАЩАЕМЫЕ ЗНАЧЕНИЯ

The groupadd command exits with the following values:

0

success

2

invalid command syntax

3

invalid argument to option

4

GID is already used (when called without -o)

9

group name is already used

10

can't update group file

СМОТРИТЕ ТАКЖЕ

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

07/12/2023 shadow-utils 4.9