The approach that <a href="http:&#x2F;&#x2F;www.pixelbeat.org&#x2F;fslint" rel="nofollow">http:&#x2F;&#x2F;www.pixelbeat.org&#x2F;fslint</a> takes is to md5 and sha1 the files to avoid false positives.<p>The core of the duplicate detection is the shell script here:<p><a href="https:&#x2F;&#x2F;github.com&#x2F;pixelb&#x2F;fslint&#x2F;blob&#x2F;ffcd3b85&#x2F;fslint&#x2F;findup#L162" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;pixelb&#x2F;fslint&#x2F;blob&#x2F;ffcd3b85&#x2F;fslint&#x2F;findup...</a>