<humour, programming> (UTSL) (A pun on Obi-Wan Kenobi's "Use the Force, Luke!" in "Star Wars") A more polite version of RTFS. This is a common way of suggesting that someone would be better off reading the source code that supports whatever feature is causing confusion, rather than making yet another futile pass through the manuals, or broadcasting questions on Usenet that haven't attracted wizards to answer them. Once upon a time in Elder Days, everyone running Unix had source. After 1978, AT&T's policy tightened up, so this objurgation was in theory appropriately directed only at associates of some outfit with a Unix source licence. In practice, bootlegs of Unix source code (made precisely for reference purposes) were so ubiquitous that one could utter it at almost anyone on the network without concern. Nowadays, free Unix clones are becoming common enough that almost anyone can read source legally. The most widely distributed is probably Linux. FreeBSD, NetBSD, 386BSD, jolix also have their followers. Cheap commercial Unix implementations with source such as BSD/OS from BSDI are accelerating this trend. (1996-01-02)

Luke of Steiris (also Luke Thaumaturgus, Luke the Younger, Luke of Hellas, Luke the Wonder-worker; 896 — 953 AD) was a Byzantine saint of the tenth century AD who lived in the themes (provinces) of Hellas and Peloponnese in Greece, and who founded the Monastery of Hosios Loukas (Venerable Luke) on the slopes of Mount Helicon, between Delphi and Levadia, near the coast of the Gulf of Corinth in Boeotia, Greece. He was one of the earliest saints to be seen levitating in prayer.

Luke Lillingstone or Lillingston (1653–1713) was a British Army general who accompanied William of Orange to England in 1688.