AirDrop

打开

1	launchctl load /System/Library/LaunchAgents/com.apple.sharingd.plist

关闭

1	launchctl unload /System/Library/LaunchAgents/com.apple.sharingd.plist

Bluetooth

关闭

defaults write /Library/Preferences/com.apple.Bluetooth.plist ControllerPowerState 0

killall bluetoothd
killall blued

eject

1
2
3

for (DRDevice *device in [DRDevice devices]) {
    [device ejectMedia];
}

使用 Disk Arbitration framework

Disk Arbitration framework 是一个基于 Core Foundation 的低级框架。会在磁盘出现和消失时通知您的应用程序，并让您的应用程序影响该过程。借助 Disk Arbitration，我们可以：