docs: def do_cat(self, path):
          """display the contents of a file"""
          path = path[0]
          tmp_file_path = self.TMP_PATH + 'tmp'
  
          if not os.path.exists(self.TMP_PATH):
              os.makedirs(self.TMP_PATH)
  
          f = self.n.downloadFile(self.current_path + path, tmp_file_path)
          f = open(tmp_file_path, 'r')
  
          self.stdout.write(f.read())
          self.stdout.write("\n")