The Original Hacker's Dictionary

This file, jargon.txt, was maintained on MIT-AI for many years, before being published by Guy Steele and others as the Hackers's Dictionary. Many eyars after the original book went out of print, Eric Raymond picked it up, updated it and republished it as the New Hacker's Dictionary.

Unfortunately, in the process, he destroyed it: first, by changing its emphasis from Lisp-based to UNIX-based; second, by watering down what was otherwise the fairly undiluted record of a single cultural group; and third, by adding in all sorts of terms which are "jargon" only in the sense that they're technical. This, however, is pretty much the original.