Lions' Commentary on Unix

Source Code and Commentary on Unix level 6; John Lions; Peer-To-Peer Communications; ISBN 1-57398-013-7.

This legendary underground classic, reproduced without modification, is two works in one: the complete source code to an early version (Edition 6) of the UNIX operating system and a brilliant commentary on that code by John Lions. Lions' marriage of source code with commentary was originally used as an operating systems textbook, and remains just as relevant today.

This book has been mentioned in the following pages of the Jargon File: Lions Book.