I have some questions , regarding user account in RHEL, 1.Is an inactive user means(
usemod -f), is that user account is disabled? I want a user account be there, but I want him to do nothing there? how to do that? 2. How can I make a new user , to be prompted to set his password , when the very first time he logs in? 3. How can I setup warning messages of expiry date ...