John Lions
From Computer History Wiki
John Lions (1937-1998) was a professor of computer science at Adelaide University.
He is most famous for his book A Commentary on the Unix Operating System, and its companion volume Unix Operating System Source Code, Level Six, written in 1976 as teaching material. It covers source code of the Unix kernel, and as such was restricted for many years as part of the copyright and licensing legal processes. It was subsequently reissued as Lions' Commentary on UNIX 6th Edition with Source Code, Peer-to-Peer Communications, 1996, and also widely distributed online.
