I once read this webpage on the Internet where this guy managed to use his caps lock key as both a backspace key and a control key simultaneously. He had his keyboard set up so that if caps lock was the only key being pressed and no other keys were being held down then it would do a single backspace when it was released. If he wanted to use it as a control key, then he would have to be holding down another key in addition to the caps lock key so that it would execute a command when they were both released. I think he did this by writing a driver for AutoHotKey (which I don't have). I can't find his webpage anymore. Is there any way that I could do this on Ubuntu?