I38/scripts/battery_alert.sh

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#!/bin/sh
if ! command -v acpi &> /dev/null ; then
exit 0
fi
while : ; do
acpi -b | awk -F'[,:%]' '{print $2, $3}' | {
read -r status capacity
if [[ "$status" == "Discharging" ]] && [[ "$capacity" -le 15 ]] && [[ "$capacity" -gt 10 ]]; then
play -qV0 "|sox -n -p synth saw E2 fade 0 0.25 0.05" "|sox -n -p synth saw E2 fade 0 0.25 0.05" norm -7
spd-say -P important "Battery $capacity percent."
elif [[ "$status" == "Discharging" ]] && [[ "$capacity" -le 10 ]] && [[ "$capacity" -gt 5 ]]; then
play -qV0 "|sox -n -p synth saw E2 fade 0 0.25 0.05" "|sox -n -p synth saw E2 fade 0 0.25 0.05" norm -7
spd-say -P important "Battery $capacity percent."
elif [[ "$status" == "Discharging" ]] && [[ "$capacity" -lt 5 ]]; then
play -qV0 "|sox -np synth sq C#5 sq D#5 sq F#5 sq A5 sq C#6" remix - fade 0 5.5 5 pitch -400
spd-say -P important "Battery $capacity percent."
fi
}
sleep 5m
done
exit 0