Ruby On Mac OSX
In Mac, Ruby is preinstalled. You can open Terminal and input the followings to view the version of Ruby installed in your Mac
ruby -v
Update Ruby. You might want to update your Ruby, however there is no installer for Ruby like Windows. Instead, we can use MacPort.
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Step 1. Install MacPort. You can download from their website: macports.org or DMG Image of Version 1.9.1 for Snow Leopard
Step 2. Open “Terminal” and input command:
sudo port
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Step 3. MacPort should be started after inputting your password, then input command:
install ruby
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It is easy, isn’t it? You can check what you have installed, you can input this command in MacPort:
installed