So I have a problem. I have WAY too many hard drives and backups from decades of computing. I just hoard everything. The issue is now I don’t know what I have duplicates of and what I don’t. or when I want to format an old external drive for something else, I’m not sure if I actually have a backup of it.
I just want a way to basically compare folders and see what files are missing or what are duplicates. I’m fine with CLI but I may prefer a GUI for this so I’m not deleting files by accident as easily…
I have searched around for this question but all the solutions seem way too complex for me.


There’s a couple programs I use.
Meld, for comparing folders exactly: http://meldmerge.org/
Czkawka for finding duplicate and similar files all scattered around: https://czkawka.net/
+1 for meld. Also, I use fdupes a lot just to see where many duplicates reside
I was literally about to link czawka