#!/bin/bash
volumecontrol() {
    pkill -SIGTRAP baraction.sh
    case $1 in
        increase)
            amixer set Master 5%+
            ;;
        ecrease)
            amixer set Master 5%-
            ;;
        toggle)
            amixer set Master toggle
            ;;
        *)
            ;;
    esac;
}

volumecontrol $1