Possible Duplicate:
How do you kick a benign user off your system?

I'm trying to remove a user account with the userdel -r command. However, it says that it is unable to remove the user because they are still signed in - even if I boot the machine without explicitly using that account it still says this. I've tried using sudo pkill -KILL -u but with no success. Any help appreciated.

  • You can force it with -f. But you should probably find out why and how they are logged in first, or you may leave your system in an inconsistent state. – ire_and_curses Nov 26 '12 at 23:16

Try using the -f option to forcefully delete the user.

userdel -rf