Search notes:

Registry: HKEY_CLASSES_ROOT\Directory\shell

Open cmd.exe here

The following simple batch file installs a shortcut (context) menu on directories that open cmd.exe with the current directory-path set to the directory on which the context menu was executed.
@rem
@rem   %L is replaced with the path of the directory
@rem
@rem   The % sign needs to be escaped in a batch script with another
@rem   % sign, thus %%L is used in the reg add command:
@rem
@reg add "HKEY_CURRENT_USER\Software\Classes\Directory\shell\Open cmd.exe here\command" /t REG_SZ /ve /d "cmd.exe /k cd %%L" /f
Github repository about-Windows-Registry, path: /HKEY_CURRENT_USER/Software/Classes/Directory/shell/open-cmd.exe-here.bat
Compare with Opening any file with a specific application

Index