Reinstall Ruby framework on OS X Yosemite

ruby rubygems osx-yosemite

Solution 1:

So, this is how I did:

1) Downloaded the Yosemite installer from the App Store

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2) Show contents of "Install OS X Yosemite.app"

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3) Open Contents/SharedSupport/InstallESD.dmg

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4) Install Packages/Essentials.pkg

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