this deletes .unwanted
directories from qbittorrent downloads. it works great but the esthetic side effect that I can't shake is that it echoes the file not found
error if none are found.
for /f "delims=" %%u in ('dir .unwanted /a:d /b /s') do rmdir /s /q "%%u" 2>nul && if defined v%~n0 echo deleted "%%u"