computerphile

Computerphile with Professor Brailsford on how a 1979 Bell Labs team reverse engineered a Linotron 202 phototypesetter over a summer to get high-quality print output. It covers typesetting history and the later 2013 rebuild of the famous vacation memo.

Brian Kernighan explains how grep came to be, written overnight by Ken Thompson, and how it got its name from the ed command g/re/p. He also covers the lineage from QED to ed that led to it.