The Unix reader, Doug McIlroy's annotated guide to research Unix

Doug McIlroy[1] invented pipes, by the way. He's also the author of spell, diff, sort, join, graph, speak and tr. He has written some fascinating papers, like Squinting at Power Series[2].

Thanks Christian Neukirchen for posting this on his blog[3], Mark Dominus[4] for asking for a copy and Doug McIlroy for sharing in the first place.

[1] http://www.cs.dartmouth.edu/~doug/

[2] http://swtch.com/~rsc/thread/squint.pdf

[3] http://chneukirchen.org/trivium

[4] http://blog.plover.com