Funny, I just learned about this command a couple of days ago as a simple way to max out your CPU. I was trying to drain the battery on my Macbook Pro and runni

Funny, I just learned about this command a couple of days ago as a simple way to max out your CPU. I was trying to drain the battery on my Macbook Pro and running 4 of these at the same time did the trick nicely. Redirected to /dev/null and run in the background: "yes > /dev/null &"