各种阻止 macOS 检测更新的方法
macOS关闭「系统偏好」里的「自动更新」
删除 ~/Library/Preferences/com.apple.preferences.softwareupdate.plist
修改更新服务器
修改：
sudo defaults write /Library/Preferences/com.apple.SoftwareUpdate CatalogURL http://su.example.com:8088/index.sucatalog
恢复：
sudo defaults delete /Library/Preferences/com.apple.SoftwareUpdate CatalogURL
修改 hosts
127.0.0.1 swdist.apple.com
127.0.0.1 swscan.apple.com
127.0.0.1 swcdn.apple.com #optional, download url
127.0.0.1 gdmf.apple.com
127.0.0.1 mesu.apple.com
127.0.0.1 xp.apple.com
消除小红点
defaults delete com.apple.systempreferences AttentionPrefBundleIDs
defaults delete com.apple.systempreferences DidShowPrefBundleIDs
killall Dock