NOM¶
chage - Modifier les informations de validité d'un mot de
passe
SYNOPSIS¶
chage [options] LOGIN
DESCRIPTION¶
The chage command changes the number of days between
password changes and the date of the last password change. This information
is used by the system to determine when a user must change their
password.
OPTIONS¶
The options which apply to the chage command are:
-d, --lastday LAST_DAY
Set the number of days since January 1st, 1970 when the
password was last changed. The date may also be expressed in the format
YYYY-MM-DD (or the format more commonly used in your area). If the
LAST_DAY is set to 0 the user is forced to change his password
on the next log on.
-E, --expiredate EXPIRE_DATE
Configurer la date, ou le nombre de jours à
compter du 1er janvier 1970, à partir de laquelle le
compte de l'utilisateur ne sera plus accessible. La date peut aussi
être exprimée dans le format AAAA-MM-JJ (ou le format plus
communément utilisé dans votre région). Un utilisateur
dont le compte est bloqué doit contacter l'administrateur
système pour pouvoir utiliser à nouveau le système.
For example the following can be used to set an account to expire
in 180 days:
chage -E $(date -d +180days +%Y-%m-%d)
Passing the number -1 as the EXPIRE_DATE will remove
an account expiration date.
-h, --help
Afficher un message d'aide et quitter.
-i, --iso8601
When printing dates, use YYYY-MM-DD format.
-I, --inactive INACTIVE
Set the number of days of inactivity after a password has
expired before the account is locked. The
INACTIVE option is the number
of days of inactivity. A user whose account is locked must contact the system
administrator before being able to use the system again.
Passing the number -1 as the INACTIVE will remove an
account's inactivity.
-l, --list
Afficher les informations sur l'âge des
comptes.
-m, --mindays MIN_DAYS
Set the minimum number of days between password changes
to MIN_DAYS. A value of zero for this field indicates that the user may
change their password at any time.
-M, --maxdays MAX_DAYS
Set the maximum number of days during which a password is
valid. When
MAX_DAYS plus
LAST_DAY is less than the current day,
the user will be required to change their password before being able to use
their account. This occurrence can be planned for in advance by use of the
-W option, which provides the user with advance warning.
Passing the number -1 as MAX_DAYS will remove
checking a password's validity.
-R, --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.
-P, --prefix PREFIX_DIR
Apply changes to configuration files under the root
filesystem found under the directory PREFIX_DIR. This option does not
chroot and is intended for preparing a cross-compilation target. Some
limitations: NIS and LDAP users/groups are not verified. PAM authentication is
using the host files. No SELINUX support.
-W, --warndays WARN_DAYS
Set the number of days of warning before a password
change is required. The WARN_DAYS option is the number of days prior to
the password expiring that a user will be warned their password is about to
expire.
If none of the options are selected, chage operates in an
interactive fashion, prompting the user with the current values for all of
the fields. Enter the new value to change the field, or leave the line blank
to use the current value. The current value is displayed between a pair of
[ ] marks.
NOTE¶
The chage program requires a shadow password file to be
available.
The chage program will report only the information from the shadow
password file. This implies that configuration from other sources (e.g. LDAP
or empty password hash field from the passwd file) that affect the user's
login will not be shown in the chage output.
The chage program will also not report any inconsistency
between the shadow and passwd files (e.g. missing x in the passwd file). The
pwck can be used to check for this kind of inconsistencies.
The chage command is restricted to the root user, except
for the -l option, which may be used by an unprivileged user to
determine when their password or account is due to expire.
CONFIGURATION¶
The following configuration variables in /etc/login.defs change
the behavior of this tool:
FICHIERS¶
/etc/passwd
Informations sur les comptes des utilisateurs.
/etc/shadow
Informations sécurisées sur les comptes
utilisateurs.
VALEURS DE RETOUR¶
The chage command exits with the following values:
0
success
1
permission denied
2
invalid command syntax
15
can't find the shadow password file
