I have a query regarding Password Policy in Linux

balasahu

There are two things in Password Expiration Policy in Linux which is making me bit confused. That is :

1. Maximum number of days between password change

   &

2. Minimum number of days between password change

First one I understood that Suppose I set Maximum Number of days between password change as 30 days means the Password will be active for next 30 days and we have change the password within 30 days.

But I dont understand What is the use of Minimum number of days between password change.