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Created August 18, 2012 23:52
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Installing Ruby after upgrading from Snow Leopard to Mountain Lion
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After you've done the steps below it will be as if you did an upgrade rather than a clean install. Your home directory will be there, as will your applications.

  1. Back up system to an external HD (I used Super Duper)
  2. Install mountain lion clean: http://eggfreckles.net/notes/installing-mountain-lion-clean/
  3. At the end of the install, transfer files back from my external HD
  4. Remove everything in /usr/local with sudo rm -Rf /usr/local/*
  5. Follow these instructions: http://jfire.io/blog/2012/03/02/xcode-4-dot-3-homebrew-and-ruby/
  6. I had trouble with ree/1.8.7 so I had to follow these instructions: http://stackoverflow.com/questions/11664835/mountain-lion-rvm-install-1-8-7-x11-error/11666019#11666019
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