GROUPMEMS(8) System Management Commands GROUPMEMS(8)

groupmems - administer members of a user's primary group

groupmems -a user_name | -d user_name | [-g group_name] | -l | -p

The groupmems command allows a user to administer their own group membership list without the requirement of superuser privileges. The groupmems utility is for systems that configure its users to be in their own name sake primary group (i.e., guest / guest).

Only the superuser, as administrator, can use groupmems to alter the memberships of other groups.

The options which apply to the groupmems command are:

-a, --add user_name

Add a user to the group membership list.

If the /etc/gshadow file exist, and the group has no entry in the /etc/gshadow file, a new entry will be created.

-d, --delete user_name

Delete a user from the group membership list.

If the /etc/gshadow file exist, the user will be removed from the list of members and administrators of the group.

If the /etc/gshadow file exist, and the group has no entry in the /etc/gshadow file, a new entry will be created.

-g, --group group_name

The superuser can specify which group membership list to modify.

-h, --help

Wyświetlenie komunikatu pomocy i zakończenie działania.

-l, --list

List the group membership list.

-p, --purge

Purge all users from the group membership list.

If the /etc/gshadow file exist, and the group has no entry in the /etc/gshadow file, a new entry will be created.

-R, --root CHROOT_DIR

Apply changes in the CHROOT_DIR directory and use the configuration files from the CHROOT_DIR directory. Only absolute paths are supported.

The groupmems executable should be in mode 2710 as user root and in group groups. The system administrator can add users to group groups to allow or disallow them using the groupmems utility to manage their own group membership list.

	$ groupadd -r groups
	$ chmod 2710 groupmems
	$ chown root:groups groupmems
	$ groupmems -g groups -a gk4

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

/etc/group

Informacje o grupach użytkowników.

/etc/gshadow

secure group account information

chfn(1), chsh(1), passwd(1), groupadd(8), groupdel(8), useradd(8), userdel(8), usermod(8).

04/01/2024 shadow-utils 4.15.1