Hi Richard, Testing was very successful. As it finds matches based on the bitstream of the data, file names and "Last opened" dates are irrelevant, the results are easily readable. Obviously it cannot automatically delete matches, but I view that more as a feature; all I want is a list of identical files so I can select a candidate for manual deletion. It is cross platform Windows, Mac and Linux. I have used it previously for file copying as well, it has a "Hash, copy, hash" function which can produce a csv list showing the before and after hashes to ensure they are identical and then I can retain the copy log if I need to check back on the files later. I would definitely recommend it for this task. Best, Stuart -- Thanks, Stuart Robinson, AV Technician, Sound Lab, School of Scottish Studies, University of Edinburgh, 29 George Square, Edinburgh, EH8 9LD 0131 651 5001 The University of Edinburgh is a charitable body, registered in Scotland, with registration number SC005336. ________________________________ From: Association for Recorded Sound Discussion List <[log in to unmask]> on behalf of Richard L. Hess <[log in to unmask]> Sent: 15 January 2021 17:47 To: [log in to unmask] <[log in to unmask]> Subject: Re: [ARSCLIST] Finding and Deleting Duplicate Digital Tracks in Large Collections This email was sent to you by someone outside the University. You should only click on links or attachments if you are certain that the email is genuine and the content is safe. Hi, Stuart, This sounds very interesting! Please keep us posted on your results. I was using the "Use Tools That You Already Have" method of solving the problem, but this sounds ideal! Cheers, Richard On 2021-01-15 7:09 a.m., ROBINSON Stuart wrote: > One method I am coincidentally testing just now is using quickhash-gui > > https://www.quickhash-gui.org/download/quickhash-v1-5-6-for-windows/ > > I can use this to select a drive or folder, then scan and hash every file, when it has finished you can right click on the list to "Show only duplicates" then right click again to export that selection to a CSV file, it shows name, path, file size, and file hash. > > It can take a while to scan but it seems very good so far from my testing. > > Best, stuart > -- Richard L. Hess email: [log in to unmask] Aurora, Ontario, Canada 647 479 2800 http://www.richardhess.com/tape/contact.htm Track Format - Speed - Equalization - Azimuth - Noise Reduction Quality tape transfers -- even from hard-to-play tapes.