That awkward moment when...
you get on one of your Linux Boxes to run fdupes over the course of a day on your external hard drive only to discover you had over 400, almost 500 GB of dupes on it, for about 100 to 150 GB of data.
I kid you not, this just happened. I’ve been saying my files were a mess, but DAMN! Now I know why I couldn’t find half my files half the time.
For those who don’t know, fdupes is a program that checks for duplicate files that are 100% identical in all ways but name. Add a few options, and you can have it print them to a file, print them to the screen, delete those duplicate files, do all that recursively (through out the subtrees)... you can do a lot with anything using a Bash Command Line - which is now available on Windows as well as Linux. Do a search called Bash for Windows 10. It’s through a partnership between Microsoft and the creators of Ubuntu - a Debian based flavor.
Hell, I know more about using the Bash command line than the graphical user interface... which is actually sad. Part of me prefers the CLI to the GUI in Linux.