#!/bin/bash

sound="mute"

if grep -q "\[on\]" <(amixer get Master); then
    current="$(amixer get Master | sed -n '/%/s/.*\[\(.*\)%\].*/\1/p' | head -1)"
    if (( current <= 25 )); then
        sound="none"
    elif (( current <= 50 )); then
        sound="low"
    elif (( current <= 75 )); then
        sound="medium"
    else
        sound="high"
    fi
fi

echo "<icon=sound/$sound.xpm/>"