'Linux: home-brewed, hobbyist, group-hacked. UNIX-like operating system created in 1991 by Linus Torvalds then passed around from hand to hand like so much anti-Soviet samizdat. Noncommercial, sold on the cheap mainly for the cost of the documentation, impracticable except perhaps for the thrill of actually looking at the source code and utterly useless to my life as a software engineering consultant.'