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Setup Ubuntu 16.10 Yakkety Yak Discussion
I also had to install `ruby-dev` from apt repos before installing the rails gem.
If someone chose RVM to work with Ruby I suggest you will need to type:
'echo "source \$HOME/.rvm/scripts/rvm" >> ~/.bashrc'
Because otherwise your terminal will remember this source only for current session and next time you ask for 'ruby -v' or 'gem install ...' you'll get answer like 'The program 'gem' is currently not installed. You can install'
Nice guide, by the way