As seen on xkcd’s awesome April Fool’s homepage, xkcdfools is a mock terminal client written in jQuery. Many familiar commands are supported:
guest@xkcd:/$ ls welcome.txt license.txt blag/ blog/ fora/ forums/ store/ about/
Terminal history works by hitting the up arrow, and there are even some funny Easter eggs included as well including:
guest@xkcd:/$ whoami You are Richard Stallman. guest@xkcd:/$
as well as the famous Konami code (↑, ↑, ↓, ↓, ←, →, ←, →, B, A). Woot!