How to tell which version of a gem a rails app is using

ruby-on-rails rubygems
Steve Brewer picture Steve Brewer · Oct 25, 2009 · Viewed 94.8k times · Source

I'm investigating a rails app - the prod server has two version of a specific gem installed, how can I tell which version the prod app is using?

Answer

BJ Clark picture BJ Clark · Oct 26, 2009

In Rails 3 and Rails 4, use bundle show

In Rails 2, rake gems will print out what gems, dependencies, and versions are installed, frozen, etc.

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