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Ruby ( MRI / YARV )
Ruby, or ' MRI (Matz's Ruby Interpreter) ' ruby, is a series of ruby interpreters. This is the original, canonical implementation of Ruby from which the standards (ruby-spec) are being extracted.
Ruby is installed by specifying the version to install.
$ rvm install 1.9.2 # Installs 1.9.2 $ rvm install 1.8.7 # Installs 1.8.7