NOME
gpasswd - administer /etc/group and /etc/gshadow
SINOSSI
|
gpasswd [option] group |
DESCRIZIONE
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.
Note sulle
password di gruppo
Le password di gruppo rappresentano un intrinseco problema
di sicurezza perché più di una persona deve
conoscerle. Ciononostante i gruppi sono uno strumento molto
utile per la cooperazione tra vari utenti.
OPZIONI
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
Mostra un messaggio di aiuto ed esce.
-Q, --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.
-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,...
Imposta l'elenco degli utenti amministratori.
-M, --members user,...
Definisce l'elenco dei membri del gruppo.
AVVISI/CAVEAT
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.
CONFIGURAZIONE
The following configuration variables in /etc/login.defs change the behavior of this tool:
FILE
/etc/group
Informazioni sugli account di gruppo.
/etc/gshadow
Informazioni sicure sugli account di gruppo.
VEDERE ANCHE
newgrp(1), groupadd(8), groupdel(8), groupmod(8), grpck(8), group(5), gshadow(5).