屏蔽网络访问
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3127.0.0.1 swscan.apple.com
127.0.0.1 swcdn.apple.com
127.0.0.1 swdist.apple.com临时清除系统更新标记
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2defaults write com.apple.systempreferences AttentionPrefBundleIDs 0
Killall Dock修改权限(非必需)
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2cd /Volumes/Macintosh\ HD
chmod 644 System/Library/PrivateFrameworks/SoftwareUpdate.framework/Versions/A/Resources/SoftwareUpdateNotificationManager.app/Contents/MacOS/SoftwareUpdateNotificationManager
MAC-关闭自动更新
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