John Lions

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 (although he did not himself write the content in the latter), together known as the Lions book. The former was written in 1976 as teaching material; they cover the source code of the UNIX kernel. Because of that they were formally unavailable for many years, due to copyright and licensing legal issues. They were subsequently re-issued as Lions' Commentary on UNIX 6th Edition with Source Code, by Peer-to-Peer Communications, 1996, and also widely distributed online.

He also spent time at Bell Laboratories, after the UNIX group there became aware of him.

Externa links

• 6th Edition - high quality scan of an original