Most programs I tested have very simple basic usage - just the program name and a list of directories. I doubt typing the above would be faster, and figuring ou

Most programs I tested have very simple basic usage - just the program name and a list of directories. I doubt typing the above would be faster, and figuring out for the first time - definitely not. Also executing that on a million of files would take ages, even compared to slowest proper duplicate finders. Anyway, thanks for sharing - it is always very exciting to see how far you can go with a few unix utilities and a bit of scripting :)