How to delete all same files and keep only one?

Question

I'm having 35k notepad files and something have same content with similar filename change how to detect all and keep only one file?

Answer 1

I don't know what happened to the previous question you made but once again, google is your friend
Hopefully, this time the question will not disappear unexpectedly...
http://code.activestate.com/recipes/362459-dupinator-detect-and-delete-duplicate-files/
https://github.com/deplicate/deplicate/blob/master/README.md