Manual: chage

CHAGE(1)						User Commands						    CHAGE(1)

NAME
       chage - change user password expiry information

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
	   Set the date or number of days since January 1, 1970 on which the user's account will no longer be accessible.
	   The date may also be expressed in the format YYYY-MM-DD (or the format more commonly used in your area). A user
	   whose account is locked must contact the system administrator before being able to use the system again.

	   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
	   Display help message and exit.

       -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
	   Show account aging information.

       -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. 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:

FILES
       /etc/passwd
	   User account information.

       /etc/shadow
	   Secure user account information.

EXIT VALUES
       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

SEE ALSO
       passwd(5), shadow(5).

shadow-utils 4.17.4					 02/02/2026						    CHAGE(1)