Since its creation in an attic at Bell Labs more than 30 years ago, the Unix operating system has spread far beyond anything that its creators could possibly have imagined. It has led to the development of much innovative software, and has influenced myriad programmers, usually for the better, while affecting other operating systems lamentably little. In this talk, Dr. Kernighan described some of the early days and the golden age, and then in the light of more recent times discussed what the Unix legacy might turn out to be. Dr. Kernighan gave a great talk to a large, welcoming crowd. Brian sends his regards to the DC computing community; he had a wonderful time speaking and wishes us the best in reviving the DC ACM chapter. Joab Jackson with the Government Computer News has blogged the lecture.