#!/bin/bash

[ -z $1 ] && 
{
cat<<!

Usage: vol <n>
where 'n' is 0-100 (Note: 0-50 ~= 'OFF').

!
exit 
}
 
cam -v $1,$1 -b $1,$1 -t $1,$1 -s $1,$1 -p $1,$1 -S $1,$1 -c $1,$1