What is Mac OS X? An Explanation for Technical Folk

What is Mac OS X?
"This document does not aim to regurgitate Marketing KoolAid, not that there's anything wrong with it™, but is intended primarily as an introduction to Mac OS X for those members of the technical community who are not familiar with it."

This is a must read for anyone interested in Mac OS X technology.

In a slightly related article see also: Command Line Archival in Mac OS X.

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