http://www.macupdate.com/download/45970/smartdupe.sh
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Next time, install SmartDupe with 1-click
Learn how MacUpdate Desktop can install apps on MacUpdate with the simple click of the 
icon. Plus, keep all your apps updated.
SmartDupe is bash script which replaces file Duplicates in a given path by Hard links to free space on your Hard Drive.
Works for UNIX Based Systems Mac OS X and Linux
Requirements
Mac OS X 10.1.5 or later
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