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How do I check I've installed Ruby, rails and other components. When I typed localhost with port it doesn't open anything. Why so much confusion with the installation why there is two different course for installation?
go to your localhost and type ' ruby -v ' to check what version is installed.
its ruby 2.0.0p481
You should be good as far as ruby goes.
When video says type command line rvm use 2.0.0 it say rvm is not recognized as an internal or external command