#!/bin/sh

usage()
{
  echo "usage:`basename $0` -u(unmute)"
}
if [ $# == 0 ]; then
  amixer set 'Master' 70% mute >/dev/null
  amixer set 'Headphone' 80% mute >/dev/null
  exit -1
fi

if [ $# == 1 ];then
    if [ $1 == '-u' ];then
      amixer set 'Master' 70% unmute >/dev/null
      amixer set 'Headphone' 80% unmute >/dev/null
    else
      usage
    fi
else
    usage
fi