recursive_image_optimize.sh

#!/bin/bash

find . -name '*.jpg' -or -name '*.png' |
while read f; do
    ls -l "$f"
    ff=$(identify -format "%m" "$f")
    if [ $ff = "PNG" ]
    then
        #optipng "$f"
        pngquant -f --speed 1 "$f" --output "$f"
        echo "Result post pngquant"
        ls -l "$f"
    else
        if [ $ff = "JPEG" ]
        then
            jpegoptim "$f"
            echo "Result post jpegoptim"
        ls -l "$f"
        fi
    fi
    echo "---------------------------------"
done