[RndTbl] Public access machine

The CLL is setting up a public access machine in the next couple of weeks. It is installed with Mint 8 (a multimedia Ubuntu fork). I would like to set up a couple of init scripts. The first will delete the public account home directory and copy a "clean" version in its place each time the computer starts. The second will shut down the computer after half an hour of use.

I haven't touched on cron since university 20 years ago and I've never written an init script. Having written a few shell scripts I know the copy script should be very simple. I'm not sure how to set up the timer script or make them run on start up. Would anybody be able to fire off some quick directions?

This may be a "foot in the door" situation.

Later Mike