From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.2 Received: from minnie.tuhs.org (minnie.tuhs.org [45.79.103.53]) by inbox.vuxu.org (OpenSMTPD) with ESMTP id 8d0bcbe8 for ; Fri, 3 Jan 2020 23:32:50 +0000 (UTC) Received: by minnie.tuhs.org (Postfix, from userid 112) id 484ED9B483; Sat, 4 Jan 2020 09:32:49 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 3C3FA9516C; Sat, 4 Jan 2020 09:32:24 +1000 (AEST) Received: by minnie.tuhs.org (Postfix, from userid 112) id 51A4A9516C; Sat, 4 Jan 2020 09:32:21 +1000 (AEST) Received: from viclamta20p.bpe.bigpond.com (viclamta20p.bpe.bigpond.com [203.38.21.84]) by minnie.tuhs.org (Postfix) with ESMTPS id 4D1819516B for ; Sat, 4 Jan 2020 09:32:20 +1000 (AEST) Received: from smtp.telstra.com ([10.10.26.4]) by viclafep20p-svc.bpe.nexus.telstra.com.au with ESMTP id <20200103233218.TTNA7286.viclafep20p-svc.bpe.nexus.telstra.com.au@smtp.telstra.com> for ; Sat, 4 Jan 2020 10:32:18 +1100 X-RG-Spam: Unknown X-RazorGate-Vade: gggruggvucftvghtrhhoucdtuddrgedufedrvdeggedguddvucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuuffpveftpgfvgffnuffvtfetpdfqfgfvnecuuegrihhlohhuthemucegtddtnecunecujfgurhepfffhvffujgfkfhgfgggtsehttddttddtredvnecuhfhrohhmpeffrghvvgcujfhorhhsfhgrlhhluceouggrvhgvsehhohhrshhfrghllhdrohhrgheqnecukfhppeduuddtrddugedurdduleefrddvfeefnecurfgrrhgrmhephhgvlhhopegrnhgvuhhrihhnrdhhohhrshhfrghllhdrohhrghdpihhnvghtpeduuddtrddugedurdduleefrddvfeefpdhmrghilhhfrhhomhepoegurghvvgeshhhorhhsfhgrlhhlrdhorhhgqedprhgtphhtthhopeeothhuhhhssehtuhhhshdrohhrgheqnecuvehluhhsthgvrhfuihiivgeptd X-RazorGate-Vade-Verdict: clean 0 X-RazorGate-Vade-Classification: clean X-RG-VS-CLASS: clean Received: from aneurin.horsfall.org (110.141.193.233) by smtp.telstra.com (5.8.418) id 5DF6FFEC02FF1F5C for tuhs@tuhs.org; Sat, 4 Jan 2020 10:32:17 +1100 Received: from aneurin.horsfall.org (localhost [127.0.0.1]) by aneurin.horsfall.org (8.15.2/8.15.2) with ESMTP id 003NWGic058435 for ; Sat, 4 Jan 2020 10:32:17 +1100 (EST) (envelope-from dave@horsfall.org) Received: from localhost (dave@localhost) by aneurin.horsfall.org (8.15.2/8.15.2/Submit) with ESMTP id 003NWF7T058432 for ; Sat, 4 Jan 2020 10:32:16 +1100 (EST) (envelope-from dave@horsfall.org) X-Authentication-Warning: aneurin.horsfall.org: dave owned process doing -bs Date: Sat, 4 Jan 2020 10:32:15 +1100 (EST) From: Dave Horsfall To: The Eunuchs Hysterical Society In-Reply-To: <1inSly-4mJ-00@marmaro.de> Message-ID: References: <1inMKv-0Km-00@marmaro.de> <1inSly-4mJ-00@marmaro.de> User-Agent: Alpine 2.21.9999 (BSF 287 2018-06-16) X-GPG-Public-Key: http://www.horsfall.org/gpgkey.pub X-GPG-Fingerprint: 05B4 FFBC 0218 B438 66E0 587B EF46 7357 EF5E F58B X-Home-Page: http://www.horsfall.org/ X-Witty-Saying: "chmod 666 the_mode_of_the_beast" MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Subject: Re: [TUHS] sh: cmd | >file 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" On Fri, 3 Jan 2020, markus schnalke wrote: > Especially I'd like to know since when and why ``>file'' is a full > command? Was it clever design or by accident? I/O redirection occurs before command execution (in this case, the null command). First, it creates (or truncates) the file, then runs the command; oh, it's the null command... -- Dave