dng2jpg.sh

#/system/bin/sh

# Required to install imagemagick and dcraw via Termux.

export LD_LIBRARY_PATH=/data/data/com.termux/files/usr/lib:$LD_LIBRARY_PATH
export LANG=en_US.UTF-8
export PREFIX=/data/data/com.termux/files/usr
export PATH=/data/data/com.termux/files/usr/bin:$PATH

if [ -z "$1" ]; then exit 0; fi;

for f in $@
do
    export TARGET_FILE=${ echo $f | sed s/\.dng$/.jpg/i }
    echo "Processing $f file..."
    dcraw -w -c "$f" | convert -resize 60% -quality 85 - "$TARGET_FILE" && rm "$f";
    echo "$f => $TARGET_FILE converted!"
done

Thanks for this hey.