text: import os
  from thedarn.utils import for_app
  
  
  @for_app('cat', at_least=1)
  def match(command):
      return (
          command.output.startswith('cat: ') and
          os.path.isdir(command.script_parts[1])
      )
  
  
  def get_new_command(command):
      return command.script.replace('cat', 'ls', 1)
  