Enable Password Expiration for a User

[Vinil]

As we know, user’s passwords are stored in '/etc/shadow' file in encrypted format. To check password expiration of user’s, you need to use 'chage' command. It displays information of password expiration details along with last password change date.

To view any existing user’s aging information such as expiry date and time, use the following command.

# chage -l username

Code: [Select]

root@server.com [~]# chage -l vinzabb
Last password change                                    : Jan 01, 2014
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

To change password aging of any user, use the following command.

#chage -M 60 username
#chage -M 60 -m 7 -W 7 userName

Parameters

    -M Set maximum number of days
    -m Set minimum number of days
    -W Set the number of days of warning