RHEL install rvm prefix: /usr/local/rvm # curl -L get.rvm.io | bash -s stable install ruby 1.9.3 # ruby -v ruby 1.8.7 (2011-06-30 patchlevel 352) [x86_64-linux] # source /usr/local/rvm/scripts/rvm # rvm install 1.9.3 #### make ruby-1.9.3 d…