From owner-freebsd-questions@freebsd.org Sat Mar 6 20:46:44 2021 Return-Path: Delivered-To: freebsd-questions@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 73361572832 for ; Sat, 6 Mar 2021 20:46:44 +0000 (UTC) (envelope-from rwmaillists@googlemail.com) Received: from mail-wr1-x42b.google.com (mail-wr1-x42b.google.com [IPv6:2a00:1450:4864:20::42b]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1O1" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4DtGqR3Ww8z4qBL for ; Sat, 6 Mar 2021 20:46:42 +0000 (UTC) (envelope-from rwmaillists@googlemail.com) Received: by mail-wr1-x42b.google.com with SMTP id 7so6804740wrz.0 for ; Sat, 06 Mar 2021 12:46:42 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:subject:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=oqnZvmrBe4LIbir7i1DVHKYDWJ6etQYi7waP6s7/mns=; b=drvA4ybYAUlSMmyuUSxNZcLxM2TQo98PxOjDs4zjVbzpRPTRh81zq9YSnc7/lx0khE 3OvfMy+8JMTwXu6WhGLZssl4qY7ZVsUsJX4AieRELYeJoXU4JDxRCahfOi6u1v/BVZdM wQ+I5JEkOONxh66jYuN8879s7UqpMOts8nkjwzPlH+CeV8uWFsfLreChOWFTgOXrUlk2 gmv9idnedmZAKq380aL/FTZjF7S35W4Ib2eM5qyaTvpkblVk+1PJG6ysHoUVXMiOJNnt C8yIGaJKyOk8bdH5YXck7W0VEP4A+UtxBlCympyyo8ZMLyC0KnI1ksHuTII2yHCkwTST kpTA== X-Gm-Message-State: AOAM532Cdwhq/GCn4YA5JV2WWTInF2isU8Xu7x2Zhzp2bbXZG3Ek4/+v /0ByxOn9fSl7Rpwuon2XBwKGTOPXVN+Ttw== X-Google-Smtp-Source: ABdhPJwOQhgchn7HNm4vaxCCxIobJ6ygGnBTBc/m2g66BMCzeP+7PFdii3aTSadukIUYov4yjZgZRQ== X-Received: by 2002:a05:6000:2aa:: with SMTP id l10mr15600537wry.368.1615063594873; Sat, 06 Mar 2021 12:46:34 -0800 (PST) Received: from gumby.homeunix.com (host-92-15-61-44.as43234.net. [92.15.61.44]) by smtp.gmail.com with ESMTPSA id p17sm9537149wmd.42.2021.03.06.12.46.34 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 06 Mar 2021 12:46:34 -0800 (PST) Date: Sat, 6 Mar 2021 20:46:33 +0000 From: RW To: freebsd-questions@freebsd.org Subject: Re: which is "better" - /dev/fd or FIFO Message-ID: <20210306204633.3be9720a@gumby.homeunix.com> In-Reply-To: References: X-Mailer: Claws Mail 3.17.8 (GTK+ 2.24.33; amd64-portbld-freebsd12.1) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 4DtGqR3Ww8z4qBL X-Spamd-Bar: / X-Spamd-Result: default: False [0.47 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; FREEMAIL_FROM(0.00)[googlemail.com]; R_SPF_ALLOW(0.00)[+ip6:2a00:1450:4000::/36]; TO_DN_NONE(0.00)[]; RCVD_COUNT_THREE(0.00)[3]; RBL_SEM_IPV6(1.00)[2a00:1450:4864:20::42b:from]; DKIM_TRACE(0.00)[googlemail.com:+]; DMARC_POLICY_ALLOW(0.00)[googlemail.com,quarantine]; NEURAL_HAM_SHORT(-1.00)[-1.000]; RECEIVED_SPAMHAUS_PBL(0.00)[92.15.61.44:received]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; FREEMAIL_ENVFROM(0.00)[googlemail.com]; ASN(0.00)[asn:15169, ipnet:2a00:1450::/32, country:US]; RBL_DBL_DONT_QUERY_IPS(0.00)[2a00:1450:4864:20::42b:from]; DWL_DNSWL_NONE(0.00)[googlemail.com:dkim]; ARC_NA(0.00)[]; R_DKIM_ALLOW(0.00)[googlemail.com:s=20161025]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; NEURAL_HAM_LONG(-0.53)[-0.530]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-questions@freebsd.org]; NEURAL_SPAM_MEDIUM(1.00)[0.999]; RCPT_COUNT_ONE(0.00)[1]; SPAMHAUS_ZRD(0.00)[2a00:1450:4864:20::42b:from:127.0.2.255]; BAD_REP_POLICIES(0.10)[]; RCVD_IN_DNSWL_NONE(0.00)[2a00:1450:4864:20::42b:from]; RCVD_TLS_ALL(0.00)[]; MAILMAN_DEST(0.00)[freebsd-questions] X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 06 Mar 2021 20:46:44 -0000 On Sat, 6 Mar 2021 14:08:13 +0000 tech-lists wrote: > Hi, > > Some ports, notably shells/bash, have a makeoptions config where you > can select "enable use of /dev/fd". But there's no explanation given > why this is advantageous or not, or if there's some kind of risk, in a > freebsd context [1]. It's not enabled by default. Please can anyone > explain? See: https://reviews.freebsd.org/rP439169