title: Tool that will remove duplicate lines from a file?
body: <p>Is there a mac file comparison tool that can detect duplicates within a file?  This is very close to what I'm looking for except it is for Windows: <a href="http://www.rlvision.com/dupli/about.asp" rel="noreferrer">http://www.rlvision.com/dupli/about.asp</a>.  Also, I need to compare duplicate content across two files.  If nothing else, I can just append file2 content to the bottom of file1.</p>