How to use HOSTS files to block and accelerate websites in batch processing

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The code is as follows:

@ echo off&setlocal&cls

Echo/&echo\ & echo=&echo] & echo [& echo+

: start

Set/p a = selection mode (1: blocking websites 2: accelerating access 3: deleting blocked websites 4: exiting):

If not defined a goto start

If an equ 1 (echo/&goto a)

If an equ 2 (echo/&goto b)

If an equ 3 (echo/&goto c)

If a% equ 4 (cls&goto: eof)

Cls

Echo typing error, press any key to start over.

Pause > nul

Echo/&echo\ & echo=&echo] & echo [& echo+

Goto start

: a

Set/p b = enter the address of the website to be blocked (e.g. www.baidu.com):

>% systemroot%\ system32\ drivers\ etc\ hosts echo 0.0.0.0% b%

Echo * setup complete *

Goto: eof

: b

Set/p b = enter the host IP to accelerate access (for example: 192.168.1.6):

Set/p bb= enter the domain name of the host to accelerate access (such as www.baidu.com):

>% systemroot%\ system32\ drivers\ etc\ hosts echo% b% bb%

Echo * setup complete *

Goto: eof

: c

Set/p b = enter the address of the website that was once blocked:

Pushd% systemroot%\ system32\ drivers\ etc\

> nul findstr / I "\" > hosts.pp findstr / vi "\"