In any UNIX, the command cat /dev/whoop-ass does pretty much the expected thing - opens up a can of whoop-ass on standard output. Fun? Sure! Useful? Well, for it to be really useful, you need to add a few more parameters. After all, the CRT that is usually standard output may not give a damn that it's just been whoop-assed, and if you're too close to the screen, you might accidentally catch some of that whoop-ass. So you really need to redirect it if you want to be safe and effective.

Example 1:

cat /dev/whoop-ass > foo is a good way to get back at noder foo for mentioning your name in a negative light, or daring to disagree with you.

Example 2:

cat /dev/whoop-ass > /dev/null is good practice - sort of like a punching bag. The bit bucket doesn't mind, and you stand a much lower chance of getting injured than you do if you just blast the whoop-ass to STDOUT.

It should be noted that /dev/whoop-ass has some extraordinary capabilities - opening up a can of whoop-ass on some random passerby has been shown to elevate endorphin levels and release stress. Highly recommended for late-night coding sprees.