SSH keys

 https://help.github.com/articles/generating-a-new-ssh-key-and-adding-it-to-the-ssh-agent/

https://wiki.archlinux.org/index.php/SSH_keys_(%E7%AE%80%E4%BD%93%E4%B8%AD%E6%96%87)


http://roclinux.cn/?p=2551