From: Vukovics Mihaly <vm@informatik.hu>
To: cygwin@cygwin.com
Subject: bash command substitution
Date: Sun, 01 Oct 2017 06:40:00 -0000 [thread overview]
Message-ID: <8f69ce8f-1092-abdb-e19d-85018ef0c260@informatik.hu> (raw)
Hello All,
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?
-
Köszönettel:
Vukovics Mihály
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next reply other threads:[~2017-10-01 6:40 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-01 6:40 Vukovics Mihaly [this message]
2017-10-01 8:19 ` Marco Atzeri
2017-10-01 17:01 ` Steven Penny
2017-10-01 17:16 ` Wouter van Doorn
2017-10-01 17:54 ` Brian Inglis
2017-10-02 12:23 ` Vukovics Mihály
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