death.tool

#!/bin/bash
# warn if all batteries are bellow a certain percent

min_percent=10

has_charge(){
    while read -r percent; do
        [[ "$percent" -gt "$min_percent" ]] && return 0
    done < <(acpi -b | cut -d, -f2 | sed 's/[ %]//g')
}

mkdir -p "/tmp/$USER"
warn_file="/tmp/$USER/death_warned"

while :; do
    if has_charge; then
        [ -f "$warn_file" ] && rm "$warn_file"
    else
        [ -f "$warn_file" ] && exit

        touch "$warn_file"

        notify-send -u "critical" -i "battery-low" -a death "low battery" "bellow $min_percent%"
    fi
    sleep 1m
done