#!/bin/sh # Send a notification if the laptop battery is either low # or is fully charged. export DISPLAY=:0 export DBUS_SESSION_BUS_ADDRESS="unix:path=/run/user/1000/bus" # Battery percentage at which to notify WARNING_LEVEL=20 BATTERY_DISCHARGING=$(acpi -b | grep "Battery 0" | grep -c "Discharging") BATTERY_LEVEL=$(acpi -b | grep "Battery 0" | grep -P -o '[0-9]+(?=%)') # Use two files to store whether we've shown a notification or not (to prevent multiple notifications) EMPTY_FILE=/tmp/batteryempty FULL_FILE=/tmp/batteryfull # Reset notifications if the computer is charging/discharging if [ "$BATTERY_DISCHARGING" -eq 1 ] && [ -f $FULL_FILE ]; then rm $FULL_FILE elif [ "$BATTERY_DISCHARGING" -eq 0 ] && [ -f $EMPTY_FILE ]; then rm $EMPTY_FILE fi # If the battery is charging and is full (and has not shown notification yet) if [ "$BATTERY_LEVEL" -gt 95 ] && [ "$BATTERY_DISCHARGING" -eq 0 ] && [ ! -f $FULL_FILE ]; then notify-send "Battery Charged" "Battery is fully charged." -i "battery" -r 9991 touch $FULL_FILE # If the battery is low and is not charging (and has not shown notification yet) elif [ "$BATTERY_LEVEL" -le $WARNING_LEVEL ] && [ "$BATTERY_DISCHARGING" -eq 1 ] && [ ! -f $EMPTY_FILE ]; then notify-send "Low Battery" "${BATTERY_LEVEL}% of battery remaining." -u critical -i "battery-alert" -r 9991 touch $EMPTY_FILE fi