title: SSH connection using private key authentication in Ubuntu
body: <p>I was given a <code>ppk</code> to access the server of my client. It was working perfectly using puTTY in windows as I can easily browse the private key. However, I need to access the server in Ubuntu environment I tried the command</p>
  
  <p>ssh -i /path/to/private_key.ppk user@myserver.com</p>
  
  <p>But it was asking for paraphrase which I wasn't ask when connecting using PuTTY in Windows.</p>