The userland is freebsd.. i.e. the executables in /usr/bin, /bin, etc. I'm sure apple alters a few things. The part of OSX that differs is in the kernel. Roughly half the kernel is FreeBSD 5.0 and the other half is based on the Mach 3.0 kernel design. Basically apple hacked two kernel designs together to get a fast, modular kernel. (well if you believe everything their documentation says at This information is based on some articles I read on apple's developer site about OS X.3.

Apple also doesn't use the ports collection which is a shame!

If you want to run a BSD besides OSX/darwin on a Mac, check out NetBSD or OpenBSD.

Lucas Holt [EMAIL PROTECTED] ________________________________________________________ (Jewel Fan Site) (Free blogging)

'Re-implementing what I designed in 1979 is not interesting to me personally. For kids who are 20 years younger than me, Linux is a great way to cut your teeth. It's a cultural phenomenon and a business phenomenon. Mac OS X is a rock-solid system that's beautifully designed. I much prefer it to Linux.'
-- Bill Joy, Wired Article 2003

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