Some of these seem fairly intuitive once you learn the origin - others, like "biff", you'd never guess. > "I can confirm the origin of biff, if you're interest

Some of these seem fairly intuitive once you learn the origin - others, like "biff", you'd never guess. > "I can confirm the origin of biff, if you're interested. Biff was Heidi Stettner's dog, back when Heidi (and I, and Bill Joy) were all grad students at U.C. Berkeley and the early versions of BSD were being developed. Biff was popular among the residents of Evans Hall, and was known for barking at the mailman, hence the name of the command." Considering the command is used for mail notifications, it's actually quite clever.