reg add

Activate REG_DWORD in current user:
reg add "HKCU\" /v "" /t REG_DWORD /d 1 /f

Deactivate REG_DWORD in current user:
reg add "HKCU\" /v "" /t REG_DWORD /d 0 /f

Activate REG_DWORD in local machine:
reg add "HKLM\" /v "" /t REG_DWORD /d 1 /f

Deactivate REG_DWORD in local machine:
reg add "HKLM\" /v "" /t REG_DWORD /d 0 /f

Replace REG_SZ in current user:
reg add "HKCU\" /v "" /t REG_SZ /d "" /f

Replace REG_SZ in local machine:
reg add "HKLM\" /v "" /t REG_SZ /d "" /f

If you want to include " in REG_SZ path then use extra \":
reg add "HKLM\" /v "" /t REG_SZ /d "\"%programfiles%\"" /f