defaults write /Library/Preferences/com.apple.SoftwareUpdate.plist AutomaticCheckEnabled -bool FALSE
defaults write /Library/Preferences/com.apple.SoftwareUpdate.plist AutomaticDownload -bool FALSE
defaults write /Library/Preferences/com.apple.SoftwareUpdate.plist AutomaticallyInstallMacOSUpdates -bool FALSE
defaults write /Library/Preferences/com.apple.SoftwareUpdate.plist ConfigDataInstall -bool FALSE
defaults write /Library/Preferences/com.apple.SoftwareUpdate.plist CriticalUpdateInstall -bool FALSE
defaults write /Library/Preferences/com.apple.commerce.plist AutoUpdate -bool FALSE
defaults write com.apple.systempreferences AttentionPrefBundleIDs 0
/usr/sbin/softwareupdate --ignore "macOS Catalina"