Lion's commentary on Unix 6th edition : with source code

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 legendary underground classic, reproduced without modification, is really two works in one: the complete source code to an early version of the UNIX operating system; and a brilliant commentary on that code by John Lions Dennis Ritchie, Ken Thompson, and other UNIX luminaries have contributed new essays on the enduring value of this Computer Science masterpiece. Lions marriage of source code with commentary was originally used as an operating systems textbook, a purpose for which it remains well-suited. As a self-study UNIX conceptual tutorial, it has informed and inspired computer professionals and advanced operating system students for over twenty years. John Lions ; With Forewords By Dennis M. Ritchie And Ken Thompson, Prefatory Notes By Peter H. Salus And Michael Tilson, A Historical Note By Peter H. Salus, And Appreciations By Greg Rose ... [et Al.]. Originally Circulated As Two Restricted-release Volumes: Unix Operating System Source Code Level Six, And, A Commentary On The Unix Operating System.