diff two urls using FileMerge

gistfile1.sh

curldiff( ) {
  template="/tmp/curldiff-XXXXXXXX"
  file1=$(mktemp $template)
  file2=$(mktemp $template)
  echo "Loading $1"
  curl -# -L -o $file1 $1
  echo "Loading $2"
  curl -# -L -o $file2 $2
  opendiff $file1 $file2
  rm $file1 $file2
}