[girishso]

Off topic, any tool to deduplicate files across different external Hard disks?

Over the years I made multiple copies of my laptop HDD to different external HDDs, ended up with lots of duplicate copies of files.

[nikisweeting]

How would you want the duplicates resolved? Just reported in some interface or would you want the duplicates deleted off some machines automatically?

There are a few different ways you could solve it but it depends on what final outcome you need.

[girishso]

Just reporting in some plain text format so I can manually delete the duplicates, or create some script to delete.

I can't have like 10 external HDDs attached at the same time, so the tool needs to dump details (hashes?) somewhere on Mac HDD, and compare against those to find the duplicates.

[UltraSane]

dupeGuru works pretty well.