#!/bin/bash

# config vars - set them appropriate to your system specs
NUM="2" #find with: amixer controls
DEVICE="Master Playback" #just call amixer
STANDARDVOLUME="80%" #you can also use dB values
AMIXER=amixer
AUDIOPLAY=aplay #any other audioplayer should do the job, too
AUDIOFILE=~/hae.wav

################# don't change anything below here #############################

#check whether we get the volume from commandline
if [ $# -eq 1 ]
then
    VOLUME=$1
else
    VOLUME=${STANDARDVOLUME}
fi

#get the current volume
OLD_VOLUME=$(amixer cget numid=$NUM | grep :)
OLD_VOLUME=${OLD_VOLUME#*=}

#set the desired volume
${AMIXER} sset $DEVICE $VOLUME &> /dev/null
#play the audiofile
${AUDIOPLAY} ${AUDIOFILE} &> /dev/null
#restore the old volume
${AMIXER} sset $DEVICE $OLD_VOLUME &> /dev/null