A quality operating system

Daniel Staal DStaal at usa.net
Sun Aug 21 02:46:11 UTC 2011

--As of August 20, 2011 7:01:07 PM -0700, Carl G Smith is alleged to have 

> I have heard that the OS X OS is based on FreeBSD. Is this true?

--As for the rest, it is mine.

Partially.  It combines a mostly Mach kernel with some FreeBSD-derived 
userland and interfaces, then adds a proprietary window manager and UI on 
top of the rest.

So the largest single source of code is probably FreeBSD, but neither the 
kernel or the part most people interact with isn't.

Daniel T. Staal

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