The auto update notification is pretty annoying since it popup everyday, and you need several clicks to make it disappear.
change from UI
I tried to disable it from
System Preference -> App Store -> uncheck Automatically check for update. it does not that the checkbox keep checked after i reopen the system preference panel.
Have to do it from command line via sudo.
sudo softwareupdate --schedule off sudo defaults write /Library/Preferences/com.apple.SoftwareUpdate AutomaticCheckEnabled -bool FALSE
You can view the status by running
sudo defaults read /Library/Preferences/com.apple.SoftwareUpdate