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  4. gpasswd(1)

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GPASSWD(1) Dienstprogramme für Benutzer GPASSWD(1)

NAME

gpasswd - administer /etc/group and /etc/gshadow

ÜBERSICHT

gpasswd [Option] Gruppe

BESCHREIBUNG

The gpasswd command is used to administer /etc/group, and /etc/gshadow. Every group can have administrators, members and a password.

System administrators can use the -A option to define group administrator(s) and the -M option to define members. They have all rights of group administrators and members.

gpasswd called by a group administrator with a group name only prompts for the new password of the group.

If a password is set the members can still use newgrp(1) without a password, and non-members must supply the password.

Hinweise zu Gruppenpasswörtern

Gruppenpasswörter beinhalten ein Sicherheitsrisiko, da mehrere Personen das Passwort kennen. Dennoch können sie sinnvoll sein, um die Zusammenarbeit zwischen Benutzern zu erleichtern.

OPTIONEN

Except for the -A and -M options, the options cannot be combined.

The options which apply to the gpasswd command are:

-a, --add user

Add the user to the named group.

-d, --delete user

Remove the user from the named group.

-h, --help

zeigt die Hilfe an und beendet das Programm

-Q, --root CHROOT_DIR

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

-r, --remove-password

Remove the password from the named group. The group password will be empty. Only group members will be allowed to use newgrp to join the named group.

-R, --restrict

Restrict the access to the named group. The group password is set to "!". Only group members with a password will be allowed to use newgrp to join the named group.

-A, --administrators user,...

Liste der Gruppenverwalter bestimmen

-M, --members user,...

Liste der Mitglieder der Gruppe bestimmen

WARNUNGEN

This tool only operates on the /etc/group and /etc/gshadow files. Thus you cannot change any NIS or LDAP group. This must be performed on the corresponding server.

KONFIGURATION

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

DATEIEN

/etc/group

Informationen zu den Gruppenkonten

/etc/gshadow

sichere Informationen zu den Gruppenkonten

SIEHE AUCH

newgrp(1), groupadd(8), groupdel(8), groupmod(8), grpck(8), group(5), gshadow(5).

12.07.2023 shadow-utils 4.9