chage



CHAGE(1)                         User Commands                        CHAGE(1)




NAME

       chage - change user password expiry information


SYNOPSIS

       chage [options] user


DESCRIPTION

       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 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 on which the user’s account will no longer be
              accessible. The EXPIRE_DATE option is the number of days since
              January 1, 1970 on which the accounted is locked. 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.

       -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 accounts
              inactivity.

       -l, --list
              Show account aging information.

       -m, --mindays MIN_DAYS
              Set the minimum number of days between password changes. A value
              of zero for this field indicates that the user may change her
              password at any time.

       -M, --maxdays MAX_DAYS
              Set 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 her password before being able
              to use her account. This occurence can be planned for in advance
              by use of the -W option, which provides the user with advance
              warning.

              Passing the number -1 as the MAX_DAYS will remove checking a
              password validation.

       -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 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 shadow password file to be available. Its
       functionality is not available when passwords are stored in the passwd
       file.

       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 her
       password or account is due to expire.


FILES

       /etc/passwd
              user account information

       /etc/shadow
              secure user account information


SEE ALSO

       passwd(5), shadow(5).


AUTHOR

       Julianne Frances Haugh <jockgrrl@ix.netcom.com>



User Commands                     08/09/2005                          CHAGE(1)

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