title: transferring via pipeline
body: <p>I need to transfer data via pipe and also transfer file with this data, can I do something like this inside the script?</p>
  
  <pre><code>cat ${1} | ./helper ${1}
  </code></pre>
  
  <p>and what is the difference if I write</p>
  
  <pre><code>cat ${1} | ./helper &lt; ${1}
  </code></pre>