I'm running Ubuntu 12.04 LTS, and installed Ruby via RVM.
The problem is, when I type ruby -v into the terminal, it says that my Ruby version is 1.8.7, and using the shotgun gem for Sinatra also says that I'm running Ruby 1.8.7.
But when I type rvm list it shows that the only version of Ruby that I have installed is 2.0.0 and it is my current and default version.
I installed Ruby 2.0.0 via RVM and it is the only version I had installed on my machine.
Now when I tried to install Rails 4 but got an error saying that I need Ruby 1.9 or higher.
How do I know what version am I really on, and how do I set 2.0.0 as my only version?
Run this command:
rvm get stable --auto-dotfiles
and make sure to read all the output. RVM will tell you if something is wrong, which in your case might be because GEM_HOME is set to something different then PATH.
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