That might well Chapter 6 "Getting Started" of the Lions Commentary on v6 Unix for the PDP-11. My nicely bound copy was published by Peer-to-Peer Communications in 1996. https://www.peerllc.com/?option=com_content&task=view&id&ItemidD I'm not sure I know where my samizdat copy from UCB in the early 1980s is ... Erik