From owner-freebsd-questions Mon Nov 27 17:22:10 2000 Delivered-To: freebsd-questions@freebsd.org Received: from guru.mired.org (okc-65-26-235-186.mmcable.com [65.26.235.186]) by hub.freebsd.org (Postfix) with SMTP id EDE8C37B479 for ; Mon, 27 Nov 2000 17:22:07 -0800 (PST) Received: (qmail 32811 invoked by uid 100); 28 Nov 2000 01:22:07 -0000 From: Mike Meyer MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <14883.2239.111479.686861@guru.mired.org> Date: Mon, 27 Nov 2000 19:22:07 -0600 (CST) To: Kenneth Wayne Culver Cc: questions@freebsd.org Subject: Re: Linux vs. FreeBsd (reposted) In-Reply-To: <29201054@toto.iv> X-Mailer: VM 6.75 under 21.1 (patch 10) "Capitol Reef" XEmacs Lucid X-face: "5Mnwy%?j>IIV\)A=):rjWL~NB2aH[}Yq8Z=u~vJ`"(,&SiLvbbz2W`;h9L,Yg`+vb1>RG% *h+%X^n0EZd>TM8_IB;a8F?(Fb"lw'IgCoyM.[Lg#r\ X-Message: You should get a better mailer. Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG GKenneth Wayne Culver types: > > well, 4.4 BSD is (i believe) a direct descendant of System V and the > > closest you'll find to actual UNIX today. Linux is based largely in > > Posix. You'll remember that BSD was originally developed using the > > AT&T code and while it contains no AT&T code today, linux never did. > You have it backwards. System V integrates things from 4.4BSD and from the > other branch of UNIX (System IV?). Integration of BSD code was an ongoing thing for SysIII/V. Since Unix was originally available in only in source form (because AT&T wasn't allowed to enter the computer market), there's been a lot of cross-fertilization all along. The first BSDism in the PWB/RT/USG/CB/SysIII/SysV family in or prior to SysIII. SysIV never saw the light of day outside Bell Labs, and had little influence on anything other than than SysV, again due to legal oddities. FWIW, the "other" branch is the Unix Time Sharing System, aka "research" Unix, from which all things Unix derive. It's just Unix v1 through v8, at which point it becomes Plan 9 [from Bell Labs, not Outer Space].