In Linux, how do I log a user out after idle period, even when they are still in a program

Question

Hi all,

I am trying to enforce a policy that logs an idle user out of a bash shell session, even when they are in an active process like a script-based menu, or vi session.

I have tried using "export TMOUT=x" where x is the number of seconds, but this only logs a user out if they are idle at the bash shell prompt.

Is there a bash script or any C code that I can run that will check what users have been idle for too long, and then stop all processes run by that user, and log them out?

Thanks

Ryan