Origins of OS X

Dave McGuire mcguire at
Sat Feb 3 10:55:45 CST 2007

On Feb 3, 2007, at 2:21 AM, David Griffith wrote:
>>     Of course, all this is speculation without having the various
>> contracts and cross-licensing agreements they actually put  
>> together.  I
>> still think, however, that if they used standard sorts of  
>> agreements, OS
>> X infringes UNIX.  Since Apple has never seemed to be naive in the
>> business sense, perhaps we can assume from this that the licensing
>> agreements involved are NOT standard ones, and that NeXT got  
>> rights to
>> the Mach kernel out of it...
> Last time I checked, OSX was based mostly on BSD4.4-lite by way of  
> FreeBSD
> and
> bits of NetBSD.

   FreeBSD, NetBSD, and OpenBSD, a pretty even mix, layered atop a  
CMU Mach-3 microkernel.


Dave McGuire
Port Charlotte, FL

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