John Lions
John Lions was an Australian computer scientist. He is best known as the author of Lions' Commentary on UNIX 6th Edition, with Source Code, commonly known as the Lions Book.
Early life
Lions gained a degree with first-class honours from the University of Sydney in 1959. He applied, and received a scholarship to study at the University of Cambridge where he earned his doctorate on Control engineering in 1963. After his graduation, he worked at the consulting firm KCS Ltd in Toronto, Ontario, Canada. In 1967, he briefly took a position at Dalhousie University in Halifax, Canada before moving on to working for Burroughs in Los Angeles as a Systems Analyst.Later life
In 1972 he moved back to Sydney, Australia and became a senior lecturer in the Department of Computer Science at the University of [New South Wales]. In 1980, he was promoted to Associate Professor and apart from sabbaticals in 1978, 1983 and 1989 at Bell Laboratories, he remained at the school until retiring in 1995 due to bad health.Work
- His most famous work, the Lions Book, was written as course notes for his operating systems course at UNSW.
- Lions organised the Australian UNIX Users' Group and was its founding president from 1984 to 1986.
- Lions was involved in the setting up of an annual conference for academics, the Australian [Computer Science Conference] and he was the editor of the Australian Computer Journal for six years and was made a fellow of the Australian Computer Society for his contribution.
Personal life
John Lions was married to Marianne and had two children, Katherine and Elizabeth.Contribution to UNSW
This commentary is included in an unofficial history of UNSW's Computer Science & Engineering by Ken Robinson (computer scientist), their longest serving member of teaching staff.John Lions and UNIX
Also in the early seventies, the groundbreaking creation of the UNIX operating system and the C programming language by Bell Laboratories researchers Ken Thompson and Dennis Ritchie inspired programmers globally including Lecturers Ken Robinson and John Lions. In 1973, Ken Robinson recognised the UNIX OS as "too good to be true" and acquired a copy of the system from Bell Laboratories. John Lions took over the management of the installation of UNIX on the department's PDP 11/40 computer and, recognising the importance of the accessibility of this system immediately incorporated a study of UNIX in his teaching, making significant modifications to two of his courses. In addition, he wrote the ‘Source Code and Commentary on Unix Level 6’ and handed cardboard bound copies on computer printout paper to his astonished students. Containing the entire UNIX 6 operating system, the book proved an invaluable teaching resource and a technical bible for a whole generation of professionals.
Legally, the book was only supposed to be available to licensees of UNIX 6 and by the time of the release of UNIX 7 in 1979, intellectual property laws were invoked to ban its publication. One programming student recalled, ‘because we couldn’t legally discuss the book in the university’s operating systems class, several of us would meet at night in an empty classroom to discuss the book. It was the only time in my life I was an active member of an underground.’ .
In the early 1980s multiple copies of the Lion’s book were photocopied. John Lions taught until 1991 and lived just long enough to see the ban on his book finally lifted in 1998. The importance of his work was recognised by the dedication on 26 June 2002 of the John Lions Garden outside the K17 building, with an annular placed around the largest tree bearing the inscription, ‘Lions’ books inspired a generation of operating systems designers.’ At the same time, a Lions Chair in Computer Science was established, funded partly through the University, but largely through the tremendous efforts of former students who he motivated and inspired with his teaching and research and who acknowledge his defining influence on their professional lives.
UNSW had the first installation of UNIX in Australia, and was one of the first places to be using that system outside of the USA. The School of Computer Science and Engineering has continued to base a significant amount of its teaching on UNIX-like systems, nowadays Linux.