Usage: extfix [-hLnRVXy] [-e=<EXT>[,<EXT>...]]... <PATH>
File Extension Fix Tool
      <PATH>        Directory to scan for files with invalid extension.
  -e, --extensions=<EXT>[,<EXT>...]
                    File extensions to filter.
  -h, --help        Show this help message and exit.
  -L, --links       Follow links.
  -n, --dry-run     Do everything except actually rename the files.
  -R, --recursive   Operate on files and directories recursively.
  -V, --version     Print version information and exit.
  -X, --errors      Produce execution error messages.
  -y, --yes         Automatic yes to prompts (run non-interactively).