title: modifying the Linux file content
body: <p>I want to modify SSH config file from command-line interface (CLI).</p>
  
  <p>Initially file has :</p>
  
  <pre><code>PasswordAuthentication no
  </code></pre>
  
  <p>Should look like </p>
  
  <pre><code>PasswordAuthentication yes
  </code></pre>
  
  <p>I am able to replace the text using <a href="https://www.gnu.org/software/sed/manual/sed.html" rel="nofollow noreferrer"><strong>sed</strong></a> but couldn't modify. please help
  Thanks</p>