From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=5.0 tests=MAILING_LIST_MULTI, RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 20810 invoked from network); 8 Dec 2020 19:06:00 -0000 Received: from minnie.tuhs.org (45.79.103.53) by inbox.vuxu.org with ESMTPUTF8; 8 Dec 2020 19:06:00 -0000 Received: by minnie.tuhs.org (Postfix, from userid 112) id 9533094545; Wed, 9 Dec 2020 05:05:57 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id B190A944D4; Wed, 9 Dec 2020 05:05:44 +1000 (AEST) Received: by minnie.tuhs.org (Postfix, from userid 112) id 4C8EB944D4; Wed, 9 Dec 2020 05:05:41 +1000 (AEST) Received: from mcvoy.com (mcvoy.com [192.169.23.250]) by minnie.tuhs.org (Postfix) with ESMTPS id B8F5E944D3 for ; Wed, 9 Dec 2020 05:05:40 +1000 (AEST) Received: by mcvoy.com (Postfix, from userid 3546) id CC92635E0AB; Tue, 8 Dec 2020 11:05:39 -0800 (PST) Date: Tue, 8 Dec 2020 11:05:39 -0800 From: Larry McVoy To: Mary Ann Horton Message-ID: <20201208190539.GA3303@mcvoy.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.24 (2015-08-30) Subject: Re: [TUHS] Were cron and at done at the same time? Or one before the other? 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" Doesn't it stand to reason that cron would come first, isn't at implemented with an entry in a crontab? On Tue, Dec 08, 2020 at 10:51:05AM -0800, Mary Ann Horton wrote: > My V6 manual has cron(VIII) - documentation of /usr/lib/crontab - but no > mention of at. > > This is consistent with my recollection - I first saw at in V7. > > ?????? Mary Ann > > On 12/8/20 10:11 AM, ron minnich wrote: > >When I got into Unix in 1976 cron and at were both there. > > > >I got to wondering for no particular reason which came first -- I had > >always assumed cron, but ...? > > > >Anyone know? -- --- Larry McVoy lm at mcvoy.com http://www.mcvoy.com/lm