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RailsInstaller: Can I maintain the gem fold when re-installing a new version?

ruby-on-rails,ruby,railsinstaller

Gems are specific to ruby version. You should just delete the ruby1.9.3 related folder, and re-install all the gems for ruby 2.1.0 version by running bundle install. No harm in leaving behind the ruby 1.9.3 gems as well, but a good practice to remove them. How to uninstall all ruby...