I've had the Safari Debug Menu enabled before, but I just recently reinstalled a fresh copy of OS X (Erase and Install), so I need to enable it again. I've tried entering "defaults write com.apple.Safari IncludeDebugMenu 1" into Terminal, but it hasn't worked, it just tells me "command not found". Does anyone know why this happens and how to fix it, or an alternate way to enable the Debug Menu that doesn't use Terminal?