我工作中的示例：
先登录192.168.2.145
Your password will be expired in 200 days.
Welcome to Baoleiji System.
Last login: Wed Aug 9 14:41:18 2017 from 110.190.90.23
Welcome to Ubuntu 12.04.5 LTS (GNU/Linux 3.13.0-67-generic x86_64)
* Documentation: https://help.ubuntu.com/
New release '14.04.3 LTS' available.
Run 'do-release-upgrade' to upgrade to it.
Your Hardware Enablement Stack (HWE) is supported until April 2017.
hd@ubuntu:
执行下面命令
ssh handsome@182.140.237.55 （handsome 这是用户 后面跟你要登录的服务器）
The authenticity of host '182.140.237.55 (182.140.237.55)' can't be established.
ECDSA key fingerprint is 79:8a:36:4b:d2:69:bc:d1:48:1e:6a:76:4d:c4:a7:15.
Are you sure you want to continue connecting (yes/no)?
Warning: Permanently added '182.140.237.55' (ECDSA) to the list of known hosts.
handsome@182.140.237.55's password:
Welcome to Ubuntu 12.04.5 LTS (GNU/Linux 3.13.0-32-generic x86_64)
* Documentation: https://help.ubuntu.com/
113 packages can be updated.
93 updates are security updates.
New release '14.04.2 LTS' available.
Run 'do-release-upgrade' to upgrade to it.
Your Hardware Enablement Stack (HWE) is supported until April 2017.
Last login: Wed Apr 5 13:37:26 2017 from 222.211.162.175
handsome@iptv: