title: How to create a .ppk private key file usnig ssh-keygen
body: <p>When I try to create a ssh key pair using <code>ssh-keygen -t rsa -b 4096 -C "your_email@example.com"</code> it creates a public key id_rsa.pub and a private key id_rsa. But this file does not have a .ppk extension. How can we generate a <code>.pub</code> and <code>.ppk</code> file ? I can also use puttygen but on the puttygen UI where do I put the user email?</p>