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Old 02-24-2004, 11:56 AM   #1
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is freebsd linux

I have seen freeBSD refered to as a version of Unix rather than a distro of Linux. What is the difference?

Old 02-24-2004, 12:01 PM   #2
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FreeBSD is based of a fork of UNIX created by Berkeley University (BSD = Berkeley Software Distribution). It runs on an entirely different kernel (ie. not the Linux kernel). BSD has a license to call themselves UNIX officially. Linux does not.

Last edited by jtshaw; 02-24-2004 at 12:04 PM.
Old 02-24-2004, 12:52 PM   #3
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ritght, bsd is based on a mach kernel linux is just that... a linux kernel
Old 02-24-2004, 01:33 PM   #4
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You're confused for good reason. Techno-geeks think of the kernel and operating system as separate. In this context the kernel each uses would be irrelevant since UNIX is an operating system. Most people, however, think of them as integral components and, therefore, Linux as an OS, not just a kernel. Technically, again, neither is a registered UNIX system, so it's more accurate to call them UNIX-like. The kernel differentiates them but they're both basically UNIX clones.
Old 02-24-2004, 03:51 PM   #5
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In addition I think of it as the following:

BSD is to linux as Windows is to linux.

Linux tends to be chaotic in a good way. BSD is intended to be more predictable & reliable.
Old 02-24-2004, 06:38 PM   #6
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does that mean all in linux can be explained in chaos theory?, like me see....... hmm i knew i shoulda learn that!,

but anyways, BSD's all have somthing tehy can all a OS, and everyhting else is a add on, in linux, everyhting is a add on (i think it adds to security personaly, at least it adds to my turst in that my system aint gonna crap out if a add another program ), soo you see?
Old 02-24-2004, 07:38 PM   #7
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Ya, I was incorrect when I said BSD had a license to call themselves UNIX. That is definitely not true. The BSD kernel and the Linux kernel are fundementally very different. BSD uses a Mach based kernel (as frieza said) which is a micro kernel. In a microkernel you have a very small kernel that does as little as possible and a bunch of modules on top of that to handle the rest of the system. The Linux kernel is a monolithic kernel. It is huge and handles all the OS required tasks internally. It does have module support for some things, but it is not modular in the same sense the BSD kernel is.

Aside from the kernel, much of the other software is the same. BSD uses still largely develop using GCC. They use things like Apache, xfree86, ect.


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