netsh Interface name store as variable

[shokarta]

hello guys,

so netsh interface show interface gives me this:

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Admin State    State          Type             Interface Name
-------------------------------------------------------------------------
Enabled        Disconnected   Dedicated        Wi-Fi
Enabled        Connected      Dedicated        Ethernet 2
Enabled        Disconnected   Dedicated        Ethernet

and I am looking for a way to store the Interface Name which has state connected (in this example it wold be "Ethernet 2" as variable,
so later on I can do soemthing like this:

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@NETSH interface set interface "Ethernet 2" DISABLED
@NETSH interface set interface "Ethernet 2" ENABLED

but instead hardcoded interface name, i would like to use the one from variable set above...

how can I do that?

[Batcher]

test-1.bat

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@echo off
for /f "tokens=3*" %%a in ('netsh interface show interface ^| findstr "Connected"') do (
    set "AdapterName=%%b"
)
echo,%AdapterName%
pause

[shokarta]

Hello,

can I kindly ask for one more modification?

So from this, basicaly I see in my interfaces:

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Admin State    State          Type             Interface Name
-------------------------------------------------------------------------
Enabled        Disconnected   Dedicated        Wi-Fi
Enabled        Connected      Dedicated        Ethernet 2
Enabled        Connected      Dedicated        VMware Network Adapter VMnet1
Enabled        Connected      Dedicated        VMware Network Adapter VMnet8
Enabled        Disconnected   Dedicated        Ethernet

and while it loops it sets the Ethernet 2, then it replaces vy VMnet1, and after all it replaces by VMnet8 as it looks for ANY "CONNECTED" state...
however, I am realy looking for any "Ethernet" network only...

so can I kindly ask to modify the code bellow to only look for Ethernet* networks only?

Thank you

[ShadowThief]

Pipe a second findstr for "Ethernet"

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@echo off
for /f "tokens=3*" %%a in ('netsh interface show interface ^| findstr "Connected" ^| findstr "Ethernet"') do (
    set "AdapterName=%%b"
)
echo %AdapterName%

[shokarta]

hello,

sorry but does not work... I tried to figure out myself for long time, but I cant

so my:

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netsh interface show interface

returns:

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Admin State    State          Type             Interface Name
-------------------------------------------------------------------------
Enabled        Connected      Dedicated        Wi-Fi
Disabled       Disconnected   Dedicated        Ethernet 2
Enabled        Connected      Dedicated        VMware Network Adapter VMnet1
Enabled        Connected      Dedicated        VMware Network Adapter VMnet8
Enabled        Disconnected   Dedicated        Ethernet

and when I run my test.bat:

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:: set currently connected ethernet as variable
FOR /f "tokens=3*" %%a IN ('netsh interface show interface ^| findstr "Connected" ^| findstr "Ethernet"') DO (SET "AdapterName=%%b")

:: disconnect LAN if connected
IF "%AdapterName:~0,8%"=="Ethernet" (NETSH interface set interface "%AdapterName%" DISABLED)
ECHO LAN disconnected, AdapterName set as %AdapterName%

it only closes the CMD window with error:

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c:\temp\World of Warcraft 5.4.8>test

c:\temp>test.bat
c:\temp>FOR /F "tokens=3*" %a IN ('netsh interface show interface | findstr "Connected" | findstr "Ethernet"') DO (SET "AdapterName=%b" )
DISABLED) was unexpected at this time.
c:\temp>IF "~0,8AdapterName" DISABLED)

can I kindly ask for help here?

[Squashman]

Based on your initial netsh output you do not have any interfaces that are "Connected" and are "Ethernet" What output are expecting when nothing matches?

[miskox]

As Squashman wrote you don't have a match so variable AdapterName remains undefined. Looks like it does not work if variable AdapterName is not defined at all. Looks like IF fails if variable is not defined.
Add

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set AdapterName=doesnotexist

to the beginning of the code.

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set AdapterName=doesnotexist
:: set currently connected ethernet as variable
FOR /f "tokens=3*" %%a IN ('netsh interface show interface ^| findstr "Connected" ^| findstr "Ethernet"') DO (SET "AdapterName=%%b")

:: disconnect LAN if connected
IF "%AdapterName:~0,8%"=="Ethernet" (
	NETSH interface set interface "%AdapterName%" DISABLED
REM should ERRORLEVEL be checked?
	ECHO LAN disconnected, AdapterName set as %AdapterName%
)

Saso