@echo off
:start
@setlocal ENABLEDELAYEDEXPANSION
title 可屏蔽网址的批处理.
mode con cols=50 lines=15
echo *************************************************
echo *****************选择如下操作********************
echo.
echo.
echo ***************1.添加要屏蔽的网址****************
echo ***************2.删除已屏蔽的网址****************
echo ***************3.查找已屏蔽的网址****************
echo ***************4.退出****************************
echo.

copy C:\WINDOWS\system32\drivers\etc\hosts C:\WINDOWS\system32\drivers\etc\hosts.txt>nul

:chose
set /p enter=请你输入你的选择:
if not "%enter%"=="" set enter=%enter%
if /i "%enter%"=="1" goto add
if /i "%enter%"=="2" goto del
if /i "%enter%"=="4" goto end
if /i "%enter%"=="3" goto check
goto chose

:add
set /p input=输入要添加的网址
if /i "%input%"=="n" goto start
echo 127.0.0.1      %input%>>C:\WINDOWS\system32\drivers\etc\hosts.txt
echo 成功添加屏蔽网址%input%
echo 请准确的输入or按n退出!
copy C:\WINDOWS\system32\drivers\etc\hosts.txt C:\WINDOWS\system32\drivers\etc\hosts>nul
goto add

:del
echo ~_~你选择了删除操作切记务必最好输入完整的网址~_~
set /p del=输入要删除的网址:
if  /i "%del%"=="n" goto start
@for /f "tokens=* delims=" %%i in ('findstr /i /v /c:%del% C:\WINDOWS\system32\drivers\etc\hosts.txt') do (
set var=%%i
echo !var!>>b.txt
)
copy b.txt C:\WINDOWS\system32\drivers\etc\hosts.txt>nul
del b.txt
echo 操作完成
echo 请准确的输入or按n退出!
copy C:\WINDOWS\system32\drivers\etc\hosts.txt C:\WINDOWS\system32\drivers\etc\hosts>nul
goto del

:check
for /f "tokens=2 delims= " %%i in ('findstr /i /c:"www" C:\WINDOWS\system32\drivers\etc\hosts.txt') do (set var=%%i
echo !var!
)
for /f "tokens=2 delims= " %%i in ('findstr /i /c:"bbs" C:\WINDOWS\system32\drivers\etc\hosts.txt') do (set var=%%i
echo !var!
)
copy C:\WINDOWS\system32\drivers\etc\hosts.txt C:\WINDOWS\system32\drivers\etc\hosts>nul
pause
cls
goto start

:end
copy C:\WINDOWS\system32\drivers\etc\hosts.txt C:\WINDOWS\system32\drivers\etc\hosts>nul
del C:\WINDOWS\system32\drivers\etc\hosts.txt
exit