Sync pamixer with playerctl volume

volume-control-sync.sh

#!/bin/bash

function up() {
    pamixer -i 10
    sync
}

function down() {
    pamixer -d 10
    sync
}

function sync() {
    if [ $(playerctl status) != "Stopped" ]; then
        volume=$(LC_ALL=C printf "%.*f\n" 2 $(echo "scale=2; $(pamixer --get-volume) / 100.0" | bc))
        playerctl volume $volume
    fi
}

eval $1