From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: 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 autolearn=ham autolearn_force=no version=3.4.4 Received: from minnie.tuhs.org (minnie.tuhs.org [50.116.15.146]) by inbox.vuxu.org (Postfix) with ESMTP id 4D1842FC7E for ; Fri, 6 Dec 2024 17:44:40 +0100 (CET) Received: from minnie.tuhs.org (localhost [IPv6:::1]) by minnie.tuhs.org (Postfix) with ESMTP id B89354278E; Sat, 7 Dec 2024 02:44:36 +1000 (AEST) Received: from freefriends.org (frenzy.freefriends.org [198.99.81.75]) by minnie.tuhs.org (Postfix) with ESMTPS id 309164278C for ; Sat, 7 Dec 2024 02:44:32 +1000 (AEST) X-Envelope-From: arnold@skeeve.com X-Envelope-To: Received: from freefriends.org (localhost [127.0.0.1]) by freefriends.org (8.16.1/8.16.1) with ESMTPS id 4B6Gi6M5871438 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NOT) for ; Fri, 6 Dec 2024 09:44:06 -0700 Received: (from arnold@localhost) by freefriends.org (8.16.1/8.14.7/Submit) id 4B6Gi6Ok871437 for tuhs@tuhs.org; Fri, 6 Dec 2024 09:44:06 -0700 From: arnold@skeeve.com Message-Id: <202412061644.4B6Gi6Ok871437@freefriends.org> X-Authentication-Warning: frenzy.freefriends.org: arnold set sender to arnold@skeeve.com using -f Date: Fri, 06 Dec 2024 09:44:06 -0700 To: tuhs@tuhs.org References: <568FD44F-01FB-441B-846B-7D42C3A8E1FB@canb.auug.org.au> <20241205030843.8552FAB1EDA5@ary.qy> <2fd6a361-b26f-4ca4-9c65-b6ba0559644e@case.edu> <202412052055.4B5KtYf1781856@freefriends.org> <202412052307.4B5N7Ade790095@freefriends.org> <20241206010926.btnkeeqx7hhnoh47@illithid> In-Reply-To: User-Agent: Heirloom mailx 12.5 7/5/10 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID-Hash: JBJWKJWXH7TOUCNSI6VKFXLPHRSMBDNY X-Message-ID-Hash: JBJWKJWXH7TOUCNSI6VKFXLPHRSMBDNY X-MailFrom: arnold@skeeve.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-tuhs.tuhs.org-0; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.6b1 Precedence: list Subject: [TUHS] Re: Pipes (was Re: After 50 years, what has the Impact of Unix been?) List-Id: The Unix Heritage Society mailing list Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: "Greg A. Woods" wrote: > > Are you sure? I think Tom Duff originated it in his "rc" shell. > > The Wikipedia entry for "Process substitution" says: > > Process substitution was available as a compile-time option for > ksh88, the 1988 version of the KornShell from Bell Labs. The rc > shell provides the feature as "pipeline branching" in Version 10 > Unix, released in 1990. > > So, if we believe that then indeed ksh88 pioneered process substitution. I'd forgotten that it was optional in ksh88. It was there out of the box in ksh93. Arnold