#!/bin/bash
outputs=(Left Right)
i=1
for o in ${outputs[@]}; do
    vol=$(amixer get Master |grep "$o" |grep %)
    if [[ "$vol" == *"off"* ]]; then
        volumes[$i]="M"
    else
        volumes[$i]=$(echo $vol |awk '{print $5}'|sed 's/[^0-9%]//g')
    fi
    let i=i+1
done
echo ${volumes[*]}