From: Wouter van Doorn <wouter@vandoorn.tv>
To: cygwin@cygwin.com
Subject: Re: bash command substitution
Date: Sun, 01 Oct 2017 17:16:00 -0000 [thread overview]
Message-ID: <CANZ2p_eMARdbhRxS9j0D2GFMb71n-B+k2Z9dTOQ8bcNKguwDnw@mail.gmail.com> (raw)
In-Reply-To: <59d11f4f.3b189d0a.39b5f.144a@mx.google.com>
Try the following:
echo $(echo hello | cat)
If that remains empty, (it should of course result in 'hello') you're
suffering from the same problem I have. And no, I did not get it resolved.
In which case I'd be elated if you could get anyone interested in finding a
solution!
If this happens to you, too, then the problem is that the pipe in a
subshell simply does not work. For the vast majority, it DOES work.
On 1 October 2017 at 18:01, Steven Penny <svnpenn@gmail.com> wrote:
> On Sun, 1 Oct 2017 08:40:51, Vukovics Mihaly wrote:
>
>> VHEIGHT=$(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?
>>
>
> I am not having this trouble:
>
> $ VHEIGHT=$(ffprobe -v 0 -of compact=p=0:nk=1 -select_streams 0 \
> -show_entries stream=height 'The Master (2012).mp4')
>
> $ echo "$VHEIGHT"
> 1040
>
> but as Marco said, you might need to sanitize for carriage returns:
>
> $ echo "$VHEIGHT" | od -tcx1
> 0000000 1 0 4 0 \r \n
> 31 30 34 30 0d 0a
>
>
>
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next prev parent reply other threads:[~2017-10-01 17:16 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-01 6:40 Vukovics Mihaly
2017-10-01 8:19 ` Marco Atzeri
2017-10-01 17:01 ` Steven Penny
2017-10-01 17:16 ` Wouter van Doorn [this message]
2017-10-01 17:54 ` Brian Inglis
2017-10-02 12:23 ` Vukovics Mihály
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