I have several hard drives I've used throughout the years to backup my data. Each one has a different folder structure and fileset. I now have a massive NAS that I want to consolidate all my data onto. I've created a new folder structure on the NAS and have moved over most of my data.
Does anyone know of a tool that could index my NAS and then compare any other hard drive, folder, or other media and list what folders/files are not on the NAS.
I believe I could write a script that would md5/sha1 each file on the NAS and put that data into a database. Then the script could compare using those hashes and list differences. I'm hoping for a better solution if one exists.