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Re: bash command substitution
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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