Hacker Typer

In school I worked as an intern for a U.S. defense contractor (which I feel rather bad about now, but that's neither here nor there). Every now and then some important general or captain type would show up for a meeting and walk around and look at what all the various labs were doing. When they came to the room where all the interns sat we would all pull up hacker typer and just furiously type away while they were looking in the door.

The important person would always be very impressed and say what a good job we were doing, and our boss who was showing them around (and knew exactly what we were doing) would have to nod and sweat bullets and then would get furious with us afterwards (but it was worth it and we did it every time we knew someone was coming to do an inspection).

Ahh, I used to queue this up on another screen when I needed things to look "busy":

    cat /dev/random | hexdump -C | grep 'ca fe'

Note that it runs a lot faster now than it used to in the 90s.

Only tangentially related, but on my MacBook Pro simply running

   cat /dev/random 

causes my terminal to hang and my speakers start emitting a loud buzzing sound until the terminal is force-quit or system is restarted.

I can understand the terminal not being able to handle the amount of data from /dev/random but for the speakers to start emitting sounds as a result of this is certainly very strange. Almost like /dev/random was being piped into /dev/audio or something. Anyone have an explanation?