复制$ ssh -i Downloads/demo.pem ubuntu@172.16.1.1 The authenticity of host 172.16.1.1 (172.16.1.1) cant be established. RSA key fingerprint is df:0e:d0:32:f8:6d:74:49:ea:60:99:82:f1:07:5d:3b. Are you sure you want to continue connecting (yes/no)?使用k实 yes Warning: Permanently added 172.16.1.1 (RSA) to the list of known hosts. Welcome to Ubuntu 12.04 LTS (GNU/Linux 3.2.0-23-virtual x86_64) * Documentation: https://help.ubuntu.com/ System information disabled due to load higher than 1.0 0 packages can be updated. 0 updates are security updates. Get cloud support with Ubuntu Advantage Cloud Guest http://www.ubuntu.com/business/services/cloud The programs included with the Ubuntu system are free software; the exact distribution terms for each program are described in the individual files in /usr/share/doc/*/copyright. Ubuntu comes with ABSOLUTELY NO WARRANTY, to the extent permitted by applicable law. To run a command as administrator (user "root"), use "sudo <command>". See "man sudo_root" for details. ubuntu@demo1:~$ ubuntu@demo1:~$ hostname demo1 ubuntu@demo1:~$ ps PID TTY TIME CMD 835 pts/0 00:00:06 bash 948 pts/0 00:00:00 ps ubuntu@demo1:~$ 1.2.3.4.5.6.7.8.9.10.11.12.13.14.15.16.17.18.19.20.21.22.23.24.25.26.27.28.29.30.31.32.33.34.35.36.