From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 41955 invoked by alias); 22 Aug 2017 17:08:01 -0000 Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Received: (qmail 41944 invoked by uid 89); 22 Aug 2017 17:08:00 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-1.4 required=5.0 tests=AWL,BAYES_00,FREEMAIL_FROM,RCVD_IN_DNSWL_NONE,RCVD_IN_SORBS_SPAM,SPF_PASS autolearn=no version=3.3.2 spammy=Hx-languages-length:1614, HContent-Transfer-Encoding:8bit X-HELO: mail-io0-f172.google.com Received: from mail-io0-f172.google.com (HELO mail-io0-f172.google.com) (209.85.223.172) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Tue, 22 Aug 2017 17:07:58 +0000 Received: by mail-io0-f172.google.com with SMTP id g71so63935892ioe.5 for ; Tue, 22 Aug 2017 10:07:58 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=m8h7xZqgjjFSyYKynVdblOoacZBKp5tts2AYb4MMFfw=; b=cO6VnI8cIFcsc4F+FsPRp7s5y7ceekBudEztd9/39uhxE7v/ZIB4hq3LrsJDV3DbJR eS7vzPflUszGYi1BKXg/VxVuEK2+9iOGHJdst5DRVRVgvNOT3dvW9a7Iu/aUX+8+38lT 4YQbphZoskqrr/+jXf9z+10fylIry426FBb/dDRxXgDLIfjGslUaksZY7uEj6+lCoVWa IfWnIy+EDNvvsebM3MGQmm4zzH0o1QqfIv79o9AlnmmIUY865d4CxAicc4t5YbviOXVN vi5pjjOMYT4EKxhwxt9g75f0ZvZGDy+En+P4p5TRzFJ9xAeA9DMFO5TwIf1lgBNsHAeT fjlw== X-Gm-Message-State: AHYfb5i+WovQwJDQhe7TSlKcwP1tmuiaFo17CM/6/CMxatSlqB6ml5yu smEqqiIbgXrlgy0Q X-Received: by 10.107.173.130 with SMTP id m2mr1162231ioo.281.1503421677024; Tue, 22 Aug 2017 10:07:57 -0700 (PDT) Received: from [192.168.0.6] (d4-50-42-50.try.wideopenwest.com. [50.4.50.42]) by smtp.gmail.com with ESMTPSA id y200sm5259784itc.27.2017.08.22.10.07.56 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 22 Aug 2017 10:07:56 -0700 (PDT) Subject: Re: alias appears to not work inside a called bash script To: cygwin@cygwin.com References: <000001d31acd$108b0340$31a109c0$@rogers.com> <0ac245f1-002b-2993-c1de-e4ddaafa9c7d@cs.umass.edu> From: cyg Simple Message-ID: <99262820-ed21-d20d-8da0-2c0daa29f476@gmail.com> Date: Tue, 22 Aug 2017 17:08:00 -0000 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.3.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-IsSubscribed: yes X-SW-Source: 2017-08/txt/msg00199.txt.bz2 On 8/22/2017 11:18 AM, Stephen John Smoogen wrote: > On 22 August 2017 at 10:47, Eliot Moss wrote: >> On 8/22/2017 10:31 AM, Stephen John Smoogen wrote: >> >>> I replicated this problem on my system and found that the fix is to add a >>> >>> shopt -s expand_aliases >>> >>> at the top of the script. I don't know why the option is turned off >>> when running scripts versus in a plain script but that seems to be a >>> default in Cygwin. >> >> >> It's a *bash* default - it has nothing to do with Cygwin as distinct >> from other bash installations. If you had a different experience >> elsewhere, it could be that the default was overridden in some system >> wide bashrc file - but that strikes me as unlikely. I suspect that >> this is done as a security measure, to prevent an alias from introducing >> a surprise. >> > > I checked on CentOS and there is no shopt option set in any of the > /etc/ files. It must be a compiled in default of some sort as EL6 and > EL7 both work without an explicit `shopt -s expand_aliases`. I then > tried on an Ubuntu 16.04 system and it works without the `shopt -s > expand_aliases` also. > > I didn't have access to anything else at the moment so I can't say > which other systems might actually follow the default other than > Cygwin at the moment. Are you talking bash as sh or bash as bash? Bash as sh will expand those aliases. But you should study http://tldp.org/LDP/abs/html/aliases.html for all your scripts. Are there environment variables that could affect the outcome? -- cyg Simple -- 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