From the command line, type "backup.bat" and the batch file will run your specified commands: first, copying all files from that directory, then renaming them to remove the extensions.

Learn how to delete files older than X days (say 7, 10, 30, etc. days) automatically using Storage Sense or ForFiles command line in Windows 11/10.

If you are unable to delete undeletable, locked, ghost folders or files from Windows 11/10 use CMD or Unlocker, Free File Unlocker, Delete Doctor, Tizer UnLocker to delete such files or folders.