battery.sh

#!/bin/bash

if [ -e /sys/class/power_supply/BAT0 ]; then
    zenity --warning --text "STARTED MONITORING BATERY"

    while true;do
            CAPACITY=$( cat /sys/class/power_supply/BAT0/uevent | grep -i capacity | cut -d'=' -f2|head -1 )
            case $CAPACITY in
            [0-9]|11)
                STATUS=$(  cat /sys/class/power_supply/BAT0/uevent | grep -i status | cut -d'=' -f2 | head -1)
                 if [ $(echo $STATUS) == "Discharging" ]; then
#                    notify-send --urgency=critical --icon=dialog-warning "LOW BATTERY! SUSPENDING IN 30 sec"
                    zenity --warning --text "LOW BATTERY! SUSPENDING IN 30 sec"
                    sleep 30
                    gnome-screensaver-command -l && sudo pm-suspend
                    break
                 fi
                ;;
            *)
            sleep 1
                continue
                ;;
            esac
    done
fi