Battery alert

battery_alert.sh

#!/bin/bash

time=$1
warn_on=20
debug=0

discharging=`acpi | grep Discharging | wc -l` # will be 1 if discharging and 0 if chargin

while true
do
		if [ $discharging -eq 1 ]; then # if discharging, check percentage
				percentage_remaining=`acpi | grep -o [0-9]*% | sed s/%//g`
				echo "Remaining ${percentage_remaining}"
				if [ $percentage_remaining -lt $warn_on ]; then
						DISPLAY=:0  zenity --notification --text "Warning, battery is discharging and at ${percentage_remaining}%!"
						sleep 600
				elif [ $debug -eq 1 ]; then
						DISPLAY=:0  zenity --notification --text "Battery is discharging, but at ${percentage_remaining}% so it's grand!"
				fi
		fi
		sleep $time
done