Source code for nicspeed.bat

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@ECHO OFF
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:: Check Windows version
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IF NOT "%OS%"=="Windows_NT" GOTO Syntax
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:: First command line check
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IF NOT "%~2"=="" GOTO Syntax
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:: Thorough command line check
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ECHO.%~1| FINDSTR /R /B /I /C:"[A-Z0-9_-]*$" >NUL

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IF ERRORLEVEL 1 GOTO Syntax
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:: Proceed
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SETLOCAL ENABLEDELAYEDEXPANSION
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:: Determine name of computer to be investigated

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IF "%~1"=="" (
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	SET Computer=%ComputerName%
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) ELSE (
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	SET Computer=%~1
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)
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:: Find the network adapter link speed
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FOR /F "tokens=1* delims==" %%A IN ('WMIC.EXE /Node:"%Computer%" /NameSpace:\\root\WMI Path MSNdis_EthernetCurrentAddress Where "Active='TRUE'" Get InstanceName /Format:LIST ^| FIND "="') DO (

	REM * * * * * *  Chomp off the trailing CR/LF  * * * * * *

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	FOR /F "tokens=*" %%C IN ("%%~B") DO (
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		FOR /F "tokens=1* delims==" %%D IN ('WMIC.EXE /Node:"%Computer%" /NameSpace:\\root\CIMV2 Path Win32_NetworkAdapter Where "(AdapterTypeId='0' And Name='%%~C' And PhysicalAdapter='TRUE')" Get Name /Format:LIST 2^>NUL ^| FIND "="') DO (

			REM * * * * * *  Chomp off the trailing CR/LF  * * * * * *

			FOR /F "tokens=*" %%F IN ("%%~E") DO (

				FOR /F "tokens=1* delims==" %%G IN ('WMIC.EXE /Node:"%Computer%" /NameSpace:\\root\CIMV2 Path Win32_NetworkAdapter Where "(Name='%%~F' And PhysicalAdapter='TRUE' And AdapterTypeId=0)" Get Name /Format:LIST 2^>NUL ^| FIND "="') DO (

					REM * * * * * *  Chomp off the trailing CR/LF  * * * * * *

					FOR /F "tokens=*" %%I IN ("%%~H") DO (

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						SET InstanceName=
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						SET NdisLinkSpeed=
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						SET Multiplier=k
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						FOR /F "tokens=*" %%J IN ('WMIC.EXE /Node:"%Computer%" /NameSpace:\\root\WMI Path MSNdis_LinkSpeed Where "InstanceName='%%~I'" Get InstanceName^,NdisLinkSpeed /Format:LIST 2^>NUL ^| FIND "="') DO (

							REM * * * * * *  Chomp off the trailing CR/LF  * * * * * *

							FOR /F "tokens=*" %%K IN ("%%~J") DO (

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								SET %%K
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							)
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						)
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						REM * * * * * *  If over 1000 kb/s display in Mb/s  * * * * * *

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						IF !NdisLinkSpeed! GTR 1000 (
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							SET /A NdisLinkSpeed = !NdisLinkSpeed! + 500

							SET /A NdisLinkSpeed = !NdisLinkSpeed! / 1000

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							SET Multiplier=M
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						)
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						REM * * * * * *  If over 1000 Mb/s display in Gb/s  * * * * * *

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						IF !NdisLinkSpeed! GTR 1000 (
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							SET /A NdisLinkSpeed = !NdisLinkSpeed! + 500

							SET /A NdisLinkSpeed = !NdisLinkSpeed! / 1000

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							SET Multiplier=G
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						)
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						REM * * * * * *  Display results  * * * * * *

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						ECHO NIC   : !InstanceName!
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						ECHO Speed : !NdisLinkSpeed! !Multiplier!b/s

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						ECHO.
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					)
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				)
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			)
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		)
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	)
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)
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ENDLOCAL
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GOTO:EOF
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:Syntax
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ECHO.
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ECHO NICSpeed.bat,  Version 1.00 for Windows XP Professional and later

ECHO Display active Ethernet adapters' link speed

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ECHO.
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ECHO Usage:  NICSPEED.BAT  [ remote_computer ]

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ECHO.
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ECHO Written by Rob van der Woude
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ECHO http://www.robvanderwoude.com
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