批处理文件：windows下关闭指定端口

@echo off
setlocal enabledelayedexpansion
set /p port=please input port number:
for /f "tokens=1-5" %%a in ('netstat -ano ^| find ":%port%"') do (
if "%%e%" == "" (
    set pid=%%d
      ) else (
        set pid=%%e
     )
   echo !pid!
   taskkill /f /pid !pid!
)
pause