Batch File: If registry key's data is equal to

Question

I\'m trying to make a .bat toggler for certain Explorer settings. To do this I need the batch file to query the Registry key\'s data and then set the key accordingly. For ex

Answer 1

The Answer from Dennis is correct, but I thought id paste the whole batch file so you can see it all working.

REG QUERY "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced" /v "HideFileExt" | Find "0x0"
IF %ERRORLEVEL% == 1 goto turnoff
If %ERRORLEVEL% == 0 goto turnon

goto end
:turnon
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced" /v 

HideFileExt /t REG_DWORD /f /D 1
goto end

:turnoff
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced" /v 

HideFileExt /t REG_DWORD /f /D 0
goto end

:end
@exit

Answer 2

The /d switch doesn't do what you think. It is a modifier to the /f switch, which is used to specify a search pattern. Unfortunately, /v already defines a search pattern, and they do not get along.

To check whether HideFileExt is set to 0, you can pipe reg's result to find:

reg query HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced /v HideFileExt | find "0x0"
if errorlevel 1 echo "HideFileExt is 0"
if errorlevel 0 echo "HideFileExt is not 0"