gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB curl -sSL https://get.rvm.io | bash -s stable # After executing the commannds above, make you you have the following # lines in the "~/.zshrc" file (I use zsh). export PATH="$PATH:$HOME/.rvm/bin" source"$HOME/.rvm/scripts/rvm" rvm install 1.9.3