A while back, the MGG podcast had a method for turning off Mojave Update notifications. I can't find it; does anyone know what episode it was? If memory serves, I thought it would turn off only Mojave update notifications -- not all MacOS update notifications -- which is preferable. 

I found this terminal command for turning them all off.

sudo mv /Library/Bundles/OSXNotification.bundle ~/Documents/ && softwareupdate --ignore macOSInstallerNotification_GM

Thanks.