FreeBSD vs. RedHat

[David J Ducshcher]

On Thursday, October 2, 2003, at 07:42 AM, Lucas Holt wrote:

>
>> Let me give acknowledgment to Greg Lehey ahead of time for this as 
>> this
>> bit that follows comes from _The Complete FreeBSD_.
>>
>> ".. by the mid-80s, there were four different versions of UNIX: the
>> Research Version ... the Berkeley Software Distribution ... System V
>> ... and XENIX, "
>>
>> Sorry for omitting parts, but the overall idea of the passage remains
>> intact.
>>
>> I believe, and someone correct me here, that BSD was a modification of
>> the /original/ UNIX code which existed prior to Sys V in 1983,
>> indicating that BSD and Sys V are different branches from the same
>> trunk.  The history is rather confusing though, so I expect to be 
>> wrong
>> on this.
>>
>> -- 
>> Todd Stephens
>>
>
> You are right through the 80s.  In the 90s, the System V code had to 
> be pulled from most of the kernel.  The NetBSD and FreeBSD projects 
> started with the BSD 386 code, and had to redo their distro as a 
> result of a lawsuit to the BSD 4.4 lite code.  That code had several 
> files removed as part of the lawsuit settlement.  I'd guess that only 
> SCO products, Solaris, AIX, and (if you believe SCO) Linux 2.4 has 
> System V code in them now.  Of course I mean solaris 2.x+, since 1.x 
> was based on BSD code.

Here is nice simple picture that seems to explain the history of unix 
fairly well. :)

   http://www.levenez.com/unix/history.html

DaveD