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 

2 Answers 2


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

passwd -e


The command

chage -d 0 user01

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

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