Power

- Battery information
- Power Supply (Energy Saver)
- Sleep / Wake settings
ioreg -n AppleSmartBattery -r is returning an empty string on non-macbooks, you might as well use that

```sh
BATTERYSTATUS=$(ioreg -n AppleSmartBattery -r)
if [ -z "$BATTERYSTATUS" ]; then exit(0); fi # No battery information found
```