Here’s an old axiom.  I post it now so it gets back onto this site in the correct category and also since you may have forgotten it and we never want to forget axioms.

Pound-for-pound, grep is one of the best programs ever written. What if you could use grep in real life? You could find your remote control, find out which of your dresser drawers has socks, find a car within your price range. Awesome!