CrLf

@echo off&setlocal enabledelayedexpansion
set /p 屏蔽=要屏蔽的网址：
set /p 解除=要解除的屏蔽：
echo 127.0.0.1 !屏蔽!>"%Windir%\System32\drivers\etc\hosts"
if defined 解除 findstr /vxrc:"\<[0-9.]*\>\<!解除!\>" "%Windir%\System32\drivers\etc\hosts">host.tmp
move /y host.tmp "%Windir%\System32\drivers\etc\hosts"
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