Validate your bundler cache for OSX. For use in your Ruby (or Rails) project that is managed with Bundler.

validate_bundler_cache.sh

#!/usr/bin/env bash

if [[ $1 != [yY] ]] ; then

  echo 'Ensure this is executed in your bundled project.'
  echo 'i.e. where the Gemfile is located'
  ehco 'you should run 'bundle clean' first to ensure you don't check unused gems
  echo "Type 'Y/y' to proceed"
  read proceed

  if [[ $proceed != [yY] ]] ; then
    exit
  fi

fi

if ! which md5 > /dev/null; then
  echo Install md5
	exit 1
fi

if ! which curl > /dev/null; then
	echo Install curl
	exit 1
fi


# set your GEM_HOME to your bundler --local
# Example /Users/hankbeaver/mycom/myapp/local/ruby/1.9.1

home=$(bundle exec gem env GEM_HOME)
cache=$home/cache

echo This will take a while...

for gem in $cache/*.gem; do
  echo inspecting $gem
	gemfile=$(basename $gem)

	local=$(md5 $gem | awk '{print $4}')
	remote=$(curl -s -D - -X HEAD -H 'Connection:close' http://production.cf.rubygems.org/gems/$gemfile | grep 'ETag' | cut -d '"' -f 2)

	if [[ ! $local = $remote ]]; then
		echo $gemfile mismatch. local: $local, remote: $remote
	fi
done

echo All done.