useradd prompt user to change password at first login

Question

what option should I add to my useradd command such that when the user logs in for the first time he's prompted to change the password or something?

I was thinking about this, but not sure if it's the right option:

useradd -K PASS_MAX_DAYS=0 username 

Answer 1

I use the passwd command to expire a password after setting it.

passwd -e

Answer 2

The command

chage -d 0 user01

forces the user01 to update its password on the next login.