怎样批量删除电脑现有的dns地址，并重新添加新的dns

Question

win7电脑现有6个dns地址，这6个地址需要全部删除，同时添加2个新地址，请问批处理指令怎样写

Answer 1

@ECHO ON
netsh interface ipv4 show dns
SETLOCAL EnableDelayedExpansion
 
SET adapterName=
 
FOR /F "tokens=* delims=:" %%a IN ('IPCONFIG ^| FIND /I "以太网适配器"') DO (
SET adapterName=%%a
REM Removes "Ethernet adapter" from the front of the adapter name
SET adapterName=!adapterName:~7!
REM Removes the colon from the end of the adapter name
SET adapterName=!adapterName:~0,-1!
echo %%adapterName
 
netsh interface ipv4 delete dns name="!adapterName!" all
netsh interface ipv4 set dns name="!adapterName!" static 223.5.5.5 primary
netsh interface ipv4 add dns name="!adapterName!" 8.8.8.8 index=2
)
 
ipconfig /flushdns
netsh interface ipv4 show dns
 
:EOF