From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=0.3 required=5.0 tests=MAILING_LIST_MULTI, RCVD_IN_DNSWL_NONE,RDNS_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.2 Received: (qmail 30560 invoked from network); 10 Mar 2020 07:30:39 -0000 Received-SPF: pass (minnie.tuhs.org: domain of minnie.tuhs.org designates 45.79.103.53 as permitted sender) receiver=inbox.vuxu.org; client-ip=45.79.103.53 envelope-from= Received: from unknown (HELO minnie.tuhs.org) (45.79.103.53) by inbox.vuxu.org with ESMTP; 10 Mar 2020 07:30:39 -0000 Received: by minnie.tuhs.org (Postfix, from userid 112) id 4161393D4A; Tue, 10 Mar 2020 17:30:34 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id CAE4293D29; Tue, 10 Mar 2020 17:29:58 +1000 (AEST) Received: by minnie.tuhs.org (Postfix, from userid 112) id 48A4B93D29; Tue, 10 Mar 2020 17:29:56 +1000 (AEST) Received: from freefriends.org (freefriends.org [96.88.95.60]) by minnie.tuhs.org (Postfix) with ESMTPS id AC2CE93D06 for ; Tue, 10 Mar 2020 17:29:55 +1000 (AEST) X-Envelope-From: arnold@skeeve.com Received: from freefriends.org (freefriends.org [96.88.95.60]) by freefriends.org (8.14.7/8.14.7) with ESMTP id 02A7TsVQ002008 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 10 Mar 2020 01:29:54 -0600 Received: (from arnold@localhost) by freefriends.org (8.14.7/8.14.7/Submit) id 02A7Tsg0002007; Tue, 10 Mar 2020 01:29:54 -0600 From: arnold@skeeve.com Message-Id: <202003100729.02A7Tsg0002007@freefriends.org> X-Authentication-Warning: frenzy.freefriends.org: arnold set sender to arnold@skeeve.com using -f Date: Tue, 10 Mar 2020 01:29:54 -0600 To: tuhs@minnie.tuhs.org, gtaylor@tnetconsulting.net References: <20200306224431.D226C18C080@mercury.lcs.mit.edu> <1fab6a1a-ccfb-02cc-c23e-1a0d8c9e954a@spamtrap.tnetconsulting.net> In-Reply-To: <1fab6a1a-ccfb-02cc-c23e-1a0d8c9e954a@spamtrap.tnetconsulting.net> User-Agent: Heirloom mailx 12.5 7/5/10 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Subject: Re: [TUHS] First appearance of named pipes 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: , Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" Grant Taylor via TUHS wrote: > On 3/6/20 3:44 PM, Noel Chiappa wrote: > > a pipe is a FIFO. > > Hum.... > > Does that mean that I should be able to replace pipes in my shell > commands with a collections of FIFOs? Absolutely: $ mkfifo the_fifo $ ls -l the_fifo prw-rw-r-- 1 arnold arnold 0 Mar 10 09:28 the_fifo $ echo foo > the_fifo & sleep 1 ; cat the_fifo [1] 3721 foo [1]+ Done echo foo > the_fifo As you stated, not that you'd want to do that, but you can. Arnold