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#!/usr/bin/env bash
# Device path from 'upower -e'
BATTERY_PATH="/org/freedesktop/UPower/devices/DisplayDevice"
# Get initial battery percentage
get_battery_percentage() {
busctl get-property org.freedesktop.UPower "$BATTERY_PATH" org.freedesktop.UPower.Device Percentage |
awk '{print int($2)}'
}
while true; do
PERCENT=$(get_battery_percentage)
if [[ $PERCENT -le 10 ]]; then
notify-send -u critical "Battery Low" "Battery at ${PERCENT}%" -i battery-caution -t 30000
# Wait 5 minutes before rechecking to avoid spam
sleep 300
else
# Check every minute otherwise
sleep 60
fi
done
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