Hello,

If you want to do this for new users you could do it with the following command:

useradd -e 2020-01-30 your_new_user

The above would create a user that would expire on 30/Jan/2020.

If you want to do this for an existing user you can use the usermod command:

usermod --expiredate 2020-01-30 your_new_user

If you don’t want to specify an exact date, but set the user to expire in let’s say 15 days, you could do something like this:

usermod --expiredate $(date -d "15 days" "+%Y-%m-%d") your_new_user

Hope that this helps!
Regards,
Bobby