How can I delete all the files in subfolders without folders (preserving directory scructure).
P.S. I have a huge variety of computer books organized in subfolders (admin web hardw programming_langs) .. but I don't need them - the only way to know something now is GOOGLE (I've realized now)... non of those books have been read, completely, that's why i'ts DEAD knowledge. 60 TB (~10 gb on *nix matter).