Explore the fascinating history and enduring impact of the Unix operating system in this 49-minute conference talk by Brian Kernighan at LCA 2022 Online. Trace the evolution of Unix from a small experiment to a multi-billion dollar industry, examining its preserved good ideas, abandoned concepts, and questionable practices that have thrived. Gain insights into the creation of Unix, its technical legacy, and its influence on modern computing. Discover how Unix fostered a community, shaped the development of tools and programming languages, and continues to impact the open-source ecosystem. Learn about key figures like Ken Thompson and Linus Torvalds, and understand Unix's role in various industries, from pocket calculators to blockbuster movies.