vipw, vigr − éditer les fichiers passwd, group, shadow ou gshadow

vipw [options]

vigr [options]

The vipw and vigr commands edits the files /etc/passwd and /etc/group, respectively. With the −s flag, they will edit the shadow versions of those files, /etc/shadow and /etc/gshadow, respectively. The programs will set the appropriate locks to prevent file corruption. When looking for an editor, the programs will first try the environment variable $VISUAL, then the environment variable $EDITOR, and finally the default editor, vi(1).

Les options applicables aux commandes vipw et vigr sont :

−g, −−group

Ãditer la base de données de groupes.

−h, −−help

Afficher un message d´aide et quitter.

−p, −−passwd

Ãditer la base de données de mots de passe.

−q, −−quiet

Mode silencieux.

−s, −−shadow

Ãditer les bases de données shadow ou gshadow.

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

MAX_MEMBERS_PER_GROUP (number)

Maximum members per group entry. When the maximum is reached, a new group entry (line) is started in /etc/group (with the same name, same password, and same GID).

The default value is 0, meaning that there are no limits in the number of members in a group.

This feature (split group) permits to limit the length of lines in the group file. This is useful to make sure that lines for NIS groups are not larger than 1024 characters.

If you need to enforce such limit, you can use 25.

Note: split groups may not be supported by all tools (even in the Shadow toolsuite. You should not use this variable unless you really need it.

/etc/group

Informations sur les groupes.

/etc/gshadow

Informations sécurisées sur les groupes.

/etc/passwd

Informations sur les comptes des utilisateurs.

/etc/shadow

Informations sécurisées sur les comptes utilisateurs.

vi(1), group(5), gshadow(5)passwd(5), shadow(5).