$ ssh-keygen -t rsa -C svnpenn@gmail.com
Generating public/private rsa key pair.
Enter file in which to save the key (/home/Steven/.ssh/id_rsa):
Created directory '/home/Steven/.ssh'.

Enter passphrase (empty for no passphrase):
Enter same passphrase again:

Your identification has been saved in /home/Steven/.ssh/id_rsa.
Your public key has been saved in /home/Steven/.ssh/id_rsa.pub.
The key fingerprint is:
e2:83:fc:1c:62:b6:33:ec:69:80:86:f9:1a:5d:ab:8d svnpenn@gmail.com
The key's randomart image is:
+--[ RSA 2048]----+
|                 |
|                 |
|                 |
|                 |
|.o  . . S        |
|+o.o + .         |
|o..oB +          |
| ..*=* o         |
|..Eo=oo          |
+-----------------+