resize image, batch - by longest side.txt

if [ ! `which mogrify` ]; then
  sudo dnf install ImageMagick
fi
echo "WARNING: this replaces the existing images. Press Ctrl C to cancel..."
echo "3..."
sleep 1
echo "2..."
sleep 1
echo "1..."
sleep 1
mogrify -resize "900x900>" -quality 75 *.jpg
# ignoring dimensions: mogrify -resize 33% -quality 75 *.jpg