GitHub

Generando la llave ssh:

ssh-keygen -t rsa -C "joe.robles.pdj@gmail.com"

Generating public/private rsa key pair.
Enter file in which to save the key (/home/nutra/.ssh/id_rsa): 
Created directory '/home/nutra/.ssh'.
Enter passphrase (empty for no passphrase): 
Enter same passphrase again: 
Your identification has been saved in /home/nutra/.ssh/id_rsa.
Your public key has been saved in /home/nutra/.ssh/id_rsa.pub.
The key fingerprint is:
lk:kl:hg:rt:cx:er:sd:oi joe.robles.pdj@gmail.com
The key's randomart image is:

Copiando la llave:

nutra@sistemas:~$ cat ~/.ssh/id_rsa.pub
ssh-rsa AAAfxVE1BUoBM1TiOFSfFtc7e9jN0FumLHJ6wqk9xDm/eSyJQdwX0hppl joe.robles.pdj@gmail.com
nutra@sistemas:~$

Modificando la configuración de la cuenta:

Seleccionando llaves SSH:

Click en agregar llave SSH:

Pegar llave en campo key: