Where does bundler store gems?
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I know that when using `gem install`, the gem will be stored under /home/username/.rvm/gems/, under which gemset the gem was installed.

But if I use Bundler and specify the gem in the Gemfile, when I run bundle install, where will those gems be stored? And what if I already installed the gem using `gem install`, if I run bundle install, will it use the previous gem installed using `gem install`?

Thanks!

