Really, I don\'t know what happened. Excuse me if this question is so NOOB, but I can\'t find the solution for this problem.
-bash: rvm: command not f
after you run sudo curl -L https://get.rvm.io | bash -s stable --ruby
sudo curl -L https://get.rvm.io | bash -s stable --ruby
you need to close the terminal ,then open again!