chage - change user password expiry information



  • 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 his/her 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).
    
           -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.
    
    	   Passing the number -1 as the EXPIRE_DATE will remove an account expiration date.
    
           -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 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 his/her 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 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 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.
    
           -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
    	   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 4.2			    05/16/2017					 CHAGE(1)
    

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