Ruby Versions

Confused...

On my Mac I am using RubyMine v.2016.3. Within the 'Ruby SDK and Gem' setting I have version 'RVM: ruby-2.3.0' installed and selected by default. In RubyMine's terminal, when I do 'ruby -v', it says it's using 'ruby 2.0.0p648'. Where is it getting that from? I have the run the uninstall command for 'ruby 2.0.0p648' and it says it's been removed. Also, when checking the Ruby version on an external terminal (iTerm) it says it's 'ruby-2.3.0'. Using 'rvm list' only shows 'ruby-2.3.0'. Using 'rvm —-default use 2.3.0' seems to make no difference.

So, where is my system getting 'ruby-2.0.0p648' from and how can I make it use the proper version (ruby-2.3.0)..???