在添加开机启动项是出现如下报错：
sudo launchctl load ~/Library/LaunchAgents/com.usbmux.iproxy.plist
~/Library/LaunchAgents/com.usbmux.iproxy.plist: Path had bad ownership/permissions
Load failed: 122: Path had bad ownership/permissions
执行如下两条命令后可以解决：
sudo chown root ~/Library/LaunchAgents/com.usbmux.iproxy.plist
sudo chgrp wheel ~/Library/LaunchAgents/com.usbmux.iproxy.plist
