Checking if a value name for a key is present on the windows registry through batch file

Question

I need help for verifying if the value for a key exist or not.

I don't know how to check if my specified value name exist or not in my specified Key path.
I have this:

reg add "HKLM\SOFTWARE\....." /v "ARCHIVELOGENABLE" /d "Y"    

So, how to check if ARCHIVELOGENABLE is one of the value names in my Key path?

I have something like this:

@echo off
reg query myKEY > nul

if %ERRORLEVEL% EQU 1 echo (
  goto INSTALL
) else (
    if (my value name not exist) (
      goto INSTALL
    ) else (
      goto SKIP_INSTALL
    )
)

--my value name not exist, what should I write here?

Answer 1

There are some issues in your code and IF clause.

Example. Let's check ForceActiveDesktopOn value in key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer

@echo off
reg query HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer /v ForceActiveDesktopOn > nul

if %ERRORLEVEL% EQU 1 (
echo Key not found 
goto INSTALL) else (
echo Key is found, skipping
goto SKIP_INSTALL
)

:INSTALL

:SKIP_INSTALL

You need also to insert your key name and value in reg query line