X-Recipient: archive-cygwin AT delorie DOT com DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:from:to:subject:date:message-id:content-type :content-transfer-encoding:mime-version; q=dns; s=default; b=meW Oe/pqMezUPONkDCPn39co0b3MrxU6Ccaqe34DVxSIsuoUMWJnabIpFztyWPVf7v0 47UU4EILux1FRZfM+f2Oi9d4oNzKyXQ5V+KYpYq6INn4iXekMl2kito2XFxn+sUv 7g1Ui0e0MjadRDThrz5cN0y1GASbBYvu2mR5jfn4= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:from:to:subject:date:message-id:content-type :content-transfer-encoding:mime-version; s=default; bh=qBdbXKv6U wHIV6nnUESwN1dojXY=; b=ICCzsdGO6QoaBkbs3gw3g2gk9jaoR5h4XBbtPNl0w IvM05vaCACHo68njoZNHLblgPryR3NyuO42Da6GR2B7HipuYauo6jhlVCnrvN0Ap uPlfjkRAiQ0hcBNkZlUB9woXl2qjjJJX5q+OzIg8x7QIn8srFzBqeozlO3gdP19r us= Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT cygwin DOT com Mail-Followup-To: cygwin AT cygwin DOT com Delivered-To: mailing list cygwin AT cygwin DOT com Authentication-Results: sourceware.org; auth=none X-Spam-SWARE-Status: No, score=-1.9 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_NONE,SPF_PASS autolearn=ham version=3.3.2 spammy= X-HELO: se02.fab-it.dk From: Ole Tange To: "cygwin AT cygwin DOT com" Subject: grep < fifo fails Date: Wed, 3 Oct 2018 15:37:14 +0000 Message-ID: Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 X-SpamExperts-Domain: prosa.dk X-SpamExperts-Username: outgoing Authentication-Results: fab-it.dk; auth=pass (login) smtp.auth=outgoing AT prosa DOT dk X-SpamExperts-Outgoing-Class: unsure X-SpamExperts-Outgoing-Evidence: Combined (0.50) X-Recommended-Action: accept X-Report-Abuse-To: spam AT se01 DOT fab-it DOT dk Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by delorie.com id w93FbXc6008373 This works: $ mkfifo fifo $ echo > fifo & grep . fifo [1] 10232 [1]+ Done echo > fifo But this fails: $ echo > fifo & grep . < fifo [1] 11756 grep: (standard input): Invalid argument [1]+ Done echo > fifo I see the same behavior on MINGW, but I do not see the same behavior on GNU/Linux. Regards, Ole Tange -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple