Picking up where we left off last week, our story now brings us to Berkeley Software Distribution (BSD). Unix first came to the University of California, Berkeley in 1975. Ken Thompson took at sabbatical to come help set up Unix version 6 on their PDP-11. Initially, BSD was just an enhanced Unix, sporting an extra layer of patches that provided additional functions. This layered approach was partly a result of budget constraints which had the PDP-11/45 split between various departments, limiting Unix to run just a third of the day.
Thanks Diego, really enjoying this series. Looking forward to the Plan 9 write-up! :D