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by kjs3 4446 days ago
I learned a huge amount about how real operating systems are put together and the compromises that get made by reading the V6 Unix source via John Lions Commentaries (yes...I had a photocopied copy). Made exploring the BSD 4.2 and 4.3 source trees (another worthwhile exercise) much easier. I suppose if I was starting out today and not in 1985 I'd look at xv6 or Minix.