"UNIX code is in various operating systems. In the early 1980s
when I was learning to be a UNIX kernel programmer, I picked up a
copy of Lyon's annotated UNIX book. His book had the source code
for one of the early releases of UNIX from Bell Labs along with a
description of what many of the C statements meant. Anyone could
have used that code and most likely did.
"So, what is really new here? Basically, nothing as far as I can
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