I don't know Windows scripting, but that looks like something you'd have to put in a file and call for it to work, instead of just running that on the command l

I don't know Windows scripting, but that looks like something you'd have to put in a file and call for it to work, instead of just running that on the command line. You can do the same thing on Unix systems. Writing $0|$0 on a file and running it should also work as a fork bomb.