#linux

In a vocabulary built from puns, insults and physics jokes, the Unix scheduler is named with a straight face after the Greek word for time. The story is in what happened next: a daemon that checked its watch so eagerly it had to be taught to sleep.

The default shell of the Linux world is a forty-year-old joke about a man named Bourne. The rest of the shell family tree is no more serious: one shell is named after a teaching assistant's login, one after a fish, and two of them are both called sh.

Everyone types it, few know the name drifted. The command was born around 1980 at SUNY Buffalo meaning one thing, the official project now spells it another way, and the man pages quietly rewrote what the first two letters mean. The story of the most-typed safety mechanism in computing.