Forcing user to change password the first time they log in

If you are creating new user in your machine, and you would like them to change password the first time they login, using command chage is the way. Let's say our user is foo.

# chage -d 0 foo

where -d is for lastday. When we set it to 0, it will ask for password change the first time foo logs in.

That's all folks :)