title: Add-Content - append to specific line
body: <p>I want to add text into specific line of txt file. I can't find any solution on internet. </p>
  
  <p>This code adds text in further line (I want for example second line):</p>
  
  <pre><code>$test_out = "test"
  
  $test_out | Add-Content "C:\tmp\test.txt"
  </code></pre>