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.
There are a few different ways you could solve it but it depends on what final outcome you need.
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.
cd /path/to/drive
find . -type f -exec sha256sum {} + | sed -E 's/^([^ ]+) \./\1,/' >> ~/all_hashes.txt
sort ~/all_hashes.txt > ~/sorted_hashes.txt
awk -F, 'NR==1{print;next} {print $0 | "sort | uniq -w64 -D"}' ~/sorted_hashes.txt > ~/non_unique_hashes.txt