How to reinstall all gems in a Ruby application (19 mar 12)
gem list | cut -d" " -f1 | xargs gem uninstall -aIx
gem install --no-ri --no-rdoc bundler -v 1.0.12
bundle install
gem list | cut -d" " -f1 | xargs gem uninstall -aIx
gem install --no-ri --no-rdoc bundler -v 1.0.12
bundle install