title: shell scripting: get a specified range of parameters
body: <p>I normally come here if google doesnt work. So this time it goes like this:
  In a function, i want to assign  to a variable from the 4-th input parameter onward. 
  Example:</p>
  
  <pre><code>function foo {  
    var="$4$5$6..."   
    use var  
    commands using $1, etc  
  }
  </code></pre>
  
  <p>So i think i cannot use shift, since i want to use $1 afterwards. I do not either want to use an extra var to store $1,$2,$3 and shift. So how should it work?</p>