[root@xxx root]# ssh-keygen -t rsa Generating public/private rsa key pair. Enter file in which to save the key (/root/.ssh/id_rsa): Created directory '/root/.ssh'. Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in /root/.ssh/id_rsa. Your public key has been saved in /root/.ssh/id_rsa.pub. The key fingerprint is: e0:f0:3b:d3:0a:3d:da:42:01:6a:61:2f:6c:a0:c6:e7 root@xxx [root@xxx root]#