peasant98

#!/bin/bash
# Minify all jpg and png images in current directory recursively
command_exists () {
    type "$1" &> /dev/null ;
}

if command_exists optipng ; then
  optipng **/*.png
else
  echo 'Error: optipng is not installed. If you are on a Mac, we recommend googling "homebrew Mac" and installing via brew' >&2