I don’t think there is a good way to tell which two duplicate files was “first” other than checking Creation Date but if this is Linux that attribute may not be enabled in your fs type.
The closest thing I’ve seen is a python dedup scripts but after it identifies all the dups it deletes all but one of them and then puts hard links, to that real file, where all the deleted dups were.
I don’t think there is a good way to tell which two duplicate files was “first” other than checking Creation Date but if this is Linux that attribute may not be enabled in your fs type.
The closest thing I’ve seen is a python dedup scripts but after it identifies all the dups it deletes all but one of them and then puts hard links, to that real file, where all the deleted dups were.