コマンドでMagicMouseのバッテリ残量[%]を取得

#!/bin/bash

num=0
while ioreg -arl -c AppleDeviceManagementHIDEventService -k BatteryPercent -d 1 > /tmp/hid_info.plist && /usr/libexec/PlistBuddy -c "Print $num:Product"  -c "Print $num:BatteryPercent" /tmp/hid_info.plist 2>/dev/null 
do
    num=`expr $num + 1`
done

Magic Keyboard
100
Magic Mouse 2
26