title: using linux how can I pass the contents of a file as a parameter to an executable?
body: <p>let's say I want to run <code>./program</code> with a string argument</p>
  
  <p>instead of typing
      <code>./program string</code> each time, how can I do <code>./program &lt;file&gt;</code> where <code>&lt;file&gt;</code> is a file that contains string?</p>
  
  <p>thankyou  </p>