Provided by: passwd_4.1.4.2+svn3283-3ubuntu2_i386 bug

NOM

       shadow - shadowed password file

DESCRIPTION

       shadow est un fichier qui contient les informations cachees concernant
       les mots de passe des utilisateurs et leurs dates de validite.

       Ce fichier ne doit pas etre accessible en lecture par les utilisateurs
       normaux afin de maintenir la securite des mots de passe, en
       particuliers pour prevenir les attaques par dictionnaires.

       Each line of this file contains 9 fields, separated by colons
       (<< : >>), in the following order:

       nom de connexion de l'utilisateur (<< login >>)
           It must be a valid account name, which exist on the system.

       mot de passe chiffr'e
           Consultez crypt(3) pour plus d'informations sur le traitement de
           cette chaine.

           Si le champ du mot de passe contient une chaine qui ne peut pas
           etre un resultat valable de crypt(3), par exemple si elle contient
           les caracteres ! ou *, alors l'utilisateur ne pourra pas utiliser
           son mot de passe UNIX pour se connecter (mais il se peut que
           l'utilisateur puisse se connecter au systeme par d'autres moyens).

           This field may be empty, in which case no passwords are required to
           authenticate as the specified login name. However, some
           applications which read the /etc/shadow file may decide not to
           permit any access at all if the password field is empty.

           A password field which starts with a exclamation mark means that
           the password is locked. The remaining characters on the line
           represent the password field before the password was locked.

       date du dernier changement de mot de passe
           The date of the last password change, expressed as the number of
           days since Jan 1, 1970.

           The value 0 has a special meaning, which is that the user should
           change her pasword the next time she will log in the system.

           An empty field means that password aging features are disabled.

       age minimum du mot de passe
           The minimum password age is the number of days the user will have
           to wait before she will be allowed to change her password again.

           An empty field and value 0 mean that there are no minimum password
           age.

       age maximum du mot de passe
           The maximum password age is the number of days after which the user
           will have to change her password.

           After this number of days is elapsed, the password may still be
           valid. The user should be asked to change her password the next
           time she will log in.

           An empty field means that there are no maximum password age, no
           password warning period, and no password inactivity period (see
           below).

           If the maximum password age is lower than the minimum password age,
           the user cannot change her password.

       password warning period
           The number of days before a password is going to expire (see the
           maximum password age above) during which the user should be warned.

           An empty field and value 0 mean that there are no password warning
           period.

       password inactivity period
           The number of days after a password has expired (see the maximum
           password age above) during which the password should still be
           accepted (and the user should update her password during the next
           login).

           After expiration of the password and this expiration period is
           elapsed, no login is possible using the current user's password.
           The user should contact her administrator.

           An empty field means that there are no enforcement of an inactivity
           period.

       date de fin de validit'e du compte
           The date of expiration of the account, expressed as the number of
           days since Jan 1, 1970.

           Note that an account expiration differs from a password expiration.
           In case of an acount expiration, the user shall not be allowed to
           login. In case of a password expiration, the user is not allowed to
           login using her password.

           An empty field means that the account will never expire.

           The value 0 should not be used as it is interpreted as either an
           account with no expiration, or as an expiration on Jan 1, 1970.

       champ r'eserv'e
           Ce champ est reserve pour une utilisation future.

FICHIERS

       /etc/passwd
           Informations sur les comptes des utilisateurs.

       /etc/shadow
           Informations securisees sur les comptes utilisateurs.

       /etc/shadow-
           Backup file for /etc/shadow.

           Note that this file is used by the tools of the shadow toolsuite,
           but not by all user and password management tools.

VOIR AUSSI

       chage(1), login(1), passwd(1), passwd(5), pwck(8), pwconv(8),
       pwunconv(8), su(1), sulogin(8).