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Ruby Installing a Ruby Development Environment Installing a Ruby Development Environment Installing Ruby on Mac

Ruby installation on Mac OSX 10.9: After ruby -v, it says ruby 2.0.0p451.

But if I execute this according to the video, "ruby global 2.0.0p451" or "ruby global 2.0.0-p451", the terminal responds "version ..." not found. According to the video, I then install the most recent version, "2.1.2", but then the terminal always stops or executing something at this step "Installing openssl-1.0.1h..." for a long-time. Does anybody know what's going on? Thank you very much.

The problem is resulted from the Kaspersky Internet Security. After I turned it off, now the system is proceeding to Installing ruby-2.1.2. Yahoo!!!!!!!!!!