I’ll have to reinstall it to remind myself what it was, if I recall correctly it was not easy to work out what I needed to do, as I simply wanted to say scan everything for duplicates that are in the (directory hierarchy e.g. multimedia/photos/) I have deemed as being the source of truth)…

Give me a few years and maybe :P - but for now I’d rather not risk important data with my own limited skills especially if there is a product out there that it’s tried and tested and hopefully recommended by someone in this sub… I didn’t expect my ask to be quite so unique…

Hi @xewgranodius - I’m not actually worried about which came first, the key thing for me is which one is located in the directory (source) of truth. If it’s not in there then it’s fair game and can be moved/deleted…

Thanks - I think I tried that - but at the time it had no concept of a source (location) of truth to preserve / find duplicates against - has that changed ? They don’t seem to reference that specific capability on that link ?

I’d like to find something that has that capability- so I can say multimedia/photos/ is the source of truth - anything identical found elsewhere is a duplicate. I hoped this would be an easy thing to as the ask is simply to ignore any duplicates in a particular folder hierarchy…

Thanks @CrappyTan69 - I ideally need this to run on my NAS, and if possible be opensource/free - looks like for what I’d need Double Killer for, it’s £15/$20 - maybe an option as a last resort…

Thanks @speculatrix - I wish I had your confidence in scripting - hence I’m hoping to find something that does all that clever stuff for me… The key thing for me is to say something like multimedia/photos/ is the source of truth anything found elsewhere is a duplicate …