docs: def find_new(self):
          """Find all '.new' files from /etc/ folder
          and subfolders
          """
          print("\nSearch for .new configuration files:\n")
          for path, dirs, files in os.walk(self.etc):
              del dirs    # delete unsed
              for f in files:
                  if f.endswith(".new"):
                      self.news.append(os.path.join(path, f))
          if not self.news:
              print("  No new configuration files\n")
              raise SystemExit()