[Gllug] Finding similarities among text files

[Ziya Suzen]

Hi there

I am looking for a utility that does opposite of what diff can do and
find similarities between two files (or even better find similarities
among bunch of files).

I have a little project in my hand with a lot of copy paste has been
done. I am going to pull common pieces of code into common files. I
would like to have a kick start with a quick analysis to show me (at
least with some heuristics) the common pieces of code (or text, it
does not have to be so clever and do a semantic comparison).

Please, let me know if you heard of anything like this.

Cheers

--Ziya
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