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 his/her password. OPTIONS The options which apply to the chage command are:
-d, lastday LASTDAY 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 LASTDAY is set to 0 the user is forced to change his password on the next log on.
-E, expiredate EXPIREDATE 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.
Passing the number -1 as the EXPIREDATE will remove an account expiration date. For example the following command can be used to set an account to expire in 180 days:
chage -E $(date -d +180days +%Y-%m-%d)
-h, help Display help message and exit.
-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 MINDAYS Set the minimum number of days between password changes to MINDAYS. A value of zero for this field indicates that the user may change his/her password at any time.
-M, maxdays MAXDAYS Set the maximum number of days during which a password is valid. When MAXDAYS plus LASTDAY is less than the current day, the user will be required to change his/her password before being able to use his/her 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 MAXDAYS will remove checking a password's validity.
-R, root CHROOTDIR Apply changes in the CHROOTDIR directory and use the configuration files from the CHROOTDIR directory.
-W, warndays WARNDAYS Set the number of days of warning before a password change is required. The WARNDAYS option is the number of days prior to the password expiring that a user will be warned his/her 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 command is restricted to the root user, except for the -l option, which may be used by an unprivileged user to determine when his/her 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 4.1.5.1 10/30/2018 CHAGE(1)