(with-eval-after-load 'dired
  (define-key dired-mode-map (kbd "C-c C-s") 'dired-toggle-sudo))
(with-eval-after-load 'tramp
  ;; Allow to use: /sudo:user@host:/path/to/file
  (add-to-list 'tramp-default-proxies-alist
               '(".*" "\\`.+\\'" "/ssh:%h:")))