Provided by: passwd_4.15.3-3ubuntu2_amd64
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).