Alter password expiry date to force user to change password on next login.
Display user password expiry information.
$ sudo chage -l milosz Last password change : Jul 24, 2017 Password expires : never Password inactive : never Account expires : never Minimum number of days between password change : 0 Maximum number of days between password change : 99999 Number of days of warning before password expires : 7
Change user password expiry information to require password change on next login.
$ sudo chage -d 0 milosz
Display user password expiry information.
$ sudo chage -l milosz Last password change : password must be changed Password expires : password must be changed Password inactive : password must be changed Account expires : never Minimum number of days between password change : 0 Maximum number of days between password change : 99999 Number of days of warning before password expires : 7
User will be forced to change the password on next login.
$ ssh milosz@192.0.2.10 milosz@192.0.2.10's password: ********* You are required to change your password immediately (root enforced) Linux debian 4.9.0-3-amd64 #1 SMP Debian 4.9.30-2+deb9u2 (2017-06-26) x86_64 The programs included with the Debian GNU/Linux system are free software; the exact distribution terms for each program are described in the individual files in /usr/share/doc/*/copyright. Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent permitted by applicable law. Last login: Sun Nov 26 15:29:41 2017 from 192.0.2.254 WARNING: Your password has expired. You must change your password now and login again! Changing password for milosz. (current) UNIX password: ********* Enter new UNIX password: ********* Retype new UNIX password: ********* passwd: password updated successfully Connection to 192.0.2.10 closed.
Alternatively you can use passwd utility to achieve the same result.
$ sudo passwd milosz -e passwd: password expiry information changed.
$ sudo chage -l milosz Last password change : password must be changed Password expires : password must be changed Password inactive : password must be changed Account expires : never Minimum number of days between password change : 0 Maximum number of days between password change : 99999 Number of days of warning before password expires : 7