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[72.197.247.231]) by smtp.gmail.com with ESMTPSA id w190sm11795904pfw.35.2020.06.14.16.37.36 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 14 Jun 2020 16:37:36 -0700 (PDT) To: Michael Siegel References: <20200614225208.GB6122@minnie.tuhs.org> From: Mary Ann Horton Message-ID: Date: Sun, 14 Jun 2020 16:37:35 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.8.0 MIME-Version: 1.0 In-Reply-To: <20200614225208.GB6122@minnie.tuhs.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US Subject: Re: [TUHS] Fwd: Origins and life of the pg pager X-BeenThere: tuhs@minnie.tuhs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: The Unix Heritage Society mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: tuhs@minnie.tuhs.org Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" Eric Shienbrood at Berkeley wrote "more" around 1979, and it was the standard BSD pager. It was inspired by the --More-- option in the ITS terminal driver at MIT. "pg" did not come from Berkeley. My recollection is that it came from AT&T in response to requests to include "more", which was in exptools at Bell Labs but not in any standard AT&T system. "pg" is not in my UNIX 5.0 manual, but it's in my SVID with the comment "New in System V Release 2". UNIX 5.0 was the AT&T internal pre-release of System V.  SVID was the System V Interface Definition from AT&T.     Mary Ann On 6/14/20 3:52 PM, Warren Toomey wrote: > All, I just received this e-mail from a non-TUHS list member. If you have > an answer for Michael, could you reply to him and pop a cc here as well? > > Thanks, Warren > > ----- Forwarded message from Michael Siegel ----- > > Date: Sun, 14 Jun 2020 16:37:59 +0200 > From: Michael Siegel > To: wkt@tuhs.org > Subject: Origins and life of the pg pager > > Hi there, > > I'm trying to find out where the pg pager originated. > > The research I've done so far vaguely suggests it came with one of the > System V versions, though Internet claims it to be “the name of the > historical utility on BSD UNIX systems” occasionally.[1] > > I think System V because the source code of pg.c in the util-linux > package says that this utility is “a clone of the System V CRT paging > utility.”[2] > > I'd also like to find out when pg was discarded and if it ever made it > into POSIX before that. Linux still has pg to the very day, but none of > the current major BSDs (Free/Net/Open) offer it. POSIX 2001, 2004 > Edition lists it as an excluded utility.[3] I've not been able to get > the text of any prior POSIX documents. It seems they aren't freely > available. > > Any ideas on how to proceed? > > > Best > Michael > > > [1] This one's from Wikipedia (https://en.wikipedia.org/wiki/Pg_(Unix)), > but I've also found other sites stating the same. > > [2] > https://git.kernel.org/pub/scm/utils/util-linux/util-linux.git/tree/text-utils/pg.c > > [3] https://pubs.opengroup.org/onlinepubs/009696899/xrat/xcu_chap04.html > > ----- End forwarded message -----