configs/arch-config/scripts/dunst-volume.sh

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#!/bin/bash
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set -euo pipefail
# You can call this script like this:
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# $./dunst-volume.sh up
# $./dunst-volume.sh down
# $./dunst-volume.sh mute
get_volume() {
amixer get Master | grep '%' | head -n 1 | cut -d '[' -f 2 | cut -d '%' -f 1
}
is_mute() {
amixer get Master | grep '%' | grep -oE '[^ ]+$' | grep off > /dev/null
}
send_notification() {
volume=$(get_volume)
# Make the bar with the special character ─ (it's not dash -)
# https://en.wikipedia.org/wiki/Box-drawing_character
bar=$(seq -s "─" $(($volume / 5)) | sed 's/[0-9]//g')
# Send the notification
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dunstify -i audio-volume-high -r 2593 -a volume-script "$volume $bar "
}
case $1 in
up)
# Set the volume on (if it was muted)
amixer -D pulse set Master on > /dev/null
# Up the volume (+ 5%)
amixer -D pulse sset Master 5%+ > /dev/null
send_notification
;;
down)
amixer -D pulse set Master on > /dev/null
amixer -D pulse sset Master 5%- > /dev/null
send_notification
;;
mute)
# Toggle mute
amixer -D pulse set Master 1+ toggle > /dev/null
if is_mute ; then
dunstify -i audio-volume-muted -r 2593 -u normal "Mute"
else
send_notification
fi
;;
esac