Unix: A History and a Memoir. Since its creation in a Bell Labs attic in 1969, the Unix operating system has spread far beyond anything its creators could have imagined. It has led to the development of a great deal of innovative software, influenced myriad programmers, and changed the path of computer technology. This book is part history and part memoir. It tells the story of the origin of Unix, explaining what Unix is, how it came about, and why it matters. Accessible to non-speciaists, the book is written for anyone with an interest in computing or the history of inventions. Published by Kindle Direct Publishing, October 2019. Available at Amazon in paperback and e-book formats. Korean translation by 하성창 Sungchang Ha, August 2020. Translations into Chinese, German, Polish, Russian and other languages are underway. More information, errata, etc.