[TUHS] Is there a good, even definitive, list of reimplementations of the Unix kernel? What would good cut-off criteria be?

[Steve Jenkin via TUHS]

My bad. 
Peter Salus did include Linux, didn't tag it as "Unix-like". Something I should've checked for.

	Linux, written by Linus Torvalds, also runs on 386/486 machines and uses no CSRG code.

Thanks for the correction, update, much appreciated.

> On 21 Apr 2026, at 11:59, jslee via TUHS <tuhs at tuhs.org> wrote:
> 
> On Mon, 20 Apr 2026, at 08:24, steve jenkin via TUHS wrote:
>> Very remiss of me, I failed to Consult the Oracle first: Peter Salus' 
>> "Quarter Century of Unix", 1994 [ pre Linux ]
> 
> Per Ted Tso’s reply earlier, Linux was already well and truly alive before 1994


==============

Included are Salus' comments on various people, tagged as CSRG.

Baecker, Ron 		responsible for the Toronto CSRG and for Pike, Duff, Tilbrook, and Tilson

Bostic, Keith 		member of CSRG; worked on 2.10, 4.4, etc.

CSRG the Computer Systems Research Group at the University of California, Berkeley; also (unrelated) group at University of Toronto

Fabry, Robert 		faculty advisor of CSRG who obtained DARPA funding for BSD

Karels, Mike 		motive force at the CSRG


Interestingly, Bill Joy & others not tagged as CSRG, these hits for BSD & SUN

BSD Berkeley Software Distribution
BSDI Berkeley Software Design, Inc.
Ultrix DEC’s version of 4.2BSD

Adams, Rick wrote SLIP; principal of UUNET and BSDI
Babaoglu, Ozalp with Bill Joy, wrote virtual memory for BSD (1978-79); designed paging
Bechtolsheim, Andreas designer of original SUN board

Elz, Robert	 early Australian user who wrote BSD disk quotas and autoconfiguration files
Gilmore, John 	major force at Sun early on; principal of Cygnus
Joy, Bill 		Unix enthusiast; created much of BSD, 2BSD, 3BSD, 4BSD; co-founder of Sun Microsystems; designed NFS
Leffler, Sam 	= major force behind 4.2BSD and TCP; wrote tip with Shannon
Pendry, Jan-Simon 		implementor of portals in 4.4BSD

--
Steve Jenkin, IT Systems and Design 
0412 786 915 (+61 412 786 915)
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mailto:sjenkin at canb.auug.org.au http://members.tip.net.au/~sjenkin