bash command substitution

[Vukovics Mihály]

Hello,

it was compiled with mingw, and the \r was the issue, thanks!

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Köszönettel:
Vukovics Mihály

On 2017-10-01 19:54, Brian Inglis wrote:
> 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 Â Â Â  Â Â Â  Â Â Â Â  # this woudl be the desired value
>> + VHEIGHT=Â Â Â  Â Â Â  # 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 Â Â Â  # 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".

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