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mroach/magic_trackpad_battery_logger.sh

Created July 30, 2018 12:30
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Logs Magic Trackpad 2 battery life to log file with timestamp
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magic_trackpad_battery_logger.sh
#!/bin/bash
set -e
tmpfile="${TMPDIR}sys_bluetooth_$(date +%s).plist"
# dump data to temp plist file
/usr/sbin/system_profiler -xml SPBluetoothDataType > "$tmpfile"
# read battery percentage from tempfile and delete percent sign
batt=`/usr/libexec/PlistBuddy "$tmpfile" -c "Print 0:_items:0:device_title:0:'Magic Trackpad 2':device_batteryPercent" | tr -d '%'`
ts=$(date +"%F %T")
rm $tmpfile
echo "$ts,$batt" >> ~/mtp.log
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