From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 127158 invoked by alias); 1 Oct 2017 17:54:45 -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 127149 invoked by uid 89); 1 Oct 2017 17:54:45 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=0.5 required=5.0 tests=AWL,BAYES_50,KAM_LAZY_DOMAIN_SECURITY,RCVD_IN_DNSWL_LOW autolearn=no version=3.3.2 spammy=H*R:D*ca, Canada, canada, calgary X-HELO: smtp-out-no.shaw.ca Received: from smtp-out-no.shaw.ca (HELO smtp-out-no.shaw.ca) (64.59.134.12) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Sun, 01 Oct 2017 17:54:44 +0000 Received: from [192.168.1.100] ([24.64.240.204]) by shaw.ca with SMTP id yiRsdHZJbI8mCyiRtdPhXB; Sun, 01 Oct 2017 11:54:42 -0600 X-Authority-Analysis: v=2.2 cv=HahkdmM8 c=1 sm=1 tr=0 a=MVEHjbUiAHxQW0jfcDq5EA==:117 a=MVEHjbUiAHxQW0jfcDq5EA==:17 a=IkcTkHD0fZMA:10 a=wn2tWnfOKRrLvmu7J_sA:9 a=QEXdDO2ut3YA:10 From: Brian Inglis Subject: Re: bash command substitution Reply-To: Brian.Inglis@SystematicSw.ab.ca To: cygwin@cygwin.com References: <8f69ce8f-1092-abdb-e19d-85018ef0c260@informatik.hu> Message-ID: <530cc7d7-b5cb-f840-887b-a46c0f5c6bd5@SystematicSw.ab.ca> Date: Sun, 01 Oct 2017 17:54:00 -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: <8f69ce8f-1092-abdb-e19d-85018ef0c260@informatik.hu> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-CMAE-Envelope: MS4wfMxcP8CVBmFcwDYBu/f8rqHJ/u1QfHST8h+AJMnvhze2bQZu6fa+o0OlNS+yg+Wv+C9MFOBwdIvRJAWwfsKtQCi9tWdnEyzCms+dz+uBhAyHAIgA5qn4 8WuEebcYPjQ94urH7pcsgMeXsYjJnONZ6t2rbDOr+0EgWRLfDAzm15mO0GZFOsrT2l5b6OEkNrYEaA== X-IsSubscribed: yes X-SW-Source: 2017-10/txt/msg00007.txt.bz2 On 2017-10-01 00:40, Vukovics Mihaly wrote: > I just wanted to use my bash script written in Debian 8 in cygwin(latest, win10 > 64bit), but does not work. > At a specific line there is a command substitution trying to get result from > ffprobe: > VHEIGHT=$(ffprobe -v error -show_entries stream=width,height -of > default=noprint_wrappers=1 ${OLDFILE} | grep "height" | cut -f2 -d'=') > For debugging purpose the same command is executed without putting the result > into a variable, and works! Does anyone know why is it not working in cygwin? > Code: > ... > declare -i VHEIGHT > ffprobe -v error -show_entries stream=width,height -of > default=noprint_wrappers=1 ${OLDFILE} | grep height | cut -f2 -d'=' > VHEIGHT=$(ffprobe -v error -show_entries stream=width,height -of > default=noprint_wrappers=1 ${OLDFILE} | grep "height" | cut -f2 -d'=') > ... > Here is some debug log (set -x): > .... > + declare -i VHEIGHT > + ffprobe -v error -show_entries stream=width,height -of > default=noprint_wrappers=1 P1220312.MP4 > + grep height > + cut -f2 -d= > 2160              # this woudl be the desired value > + VHEIGHT=        # here the variable is empty! > + VIDSTABDETECTOPTS=:shakiness=10 > + VIDSTABDETECTOPTS+=:result=P1220312-stab.trf > + VIDSTABTRANSFORMOPTS+=:crop=keep > .... > The same in Linux bash: > ... > + declare -i VHEIGHT > + ffprobe -v error -show_entries stream=width,height -of > default=noprint_wrappers=1 P1220312.MP4 > + grep height > + cut -f2 -d= > 2160 > ++ ffprobe -v error -show_entries stream=width,height -of > default=noprint_wrappers=1 P1220312.MP4 > ++ grep height > ++ cut -f2 -d= > + VHEIGHT=2160     # here is the desired value in the variable!!! > ... > Any suggestions? Non-numeric characters in string - add "| cat -A" to the end of your pipe, or equivalent od or xxd commands to see what's there. There is no Cygwin package so how was ffprobe built - with Cygwin or Mingw? May be extraneous trailing spaces or \r at end of input - try "set -o igncr". -- Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada -- 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