json with image dimensions from directory

imagesizes.sh

function imagesizes() {
  for filename in *; do
     imgsize "$filename"
  done
}

function imgsize() {
  local width height
  if [[ -f $1 ]]; then
    height=$(sips -g pixelHeight "$1"|tail -n 1|awk '{print $2}')
    width=$(sips -g pixelWidth "$1"|tail -n 1|awk '{print $2}')
    echo "{ 'src': '${1}',  'width': '${width}', 'height': '${height}' },"
  else
    echo "File not found"
  fi
}