How to modify the hostname of Ubuntu 15.04

Editor to share with you how to modify the host name of Ubuntu 15.04, I believe that most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

1. Temporary modification

Root@ubuntu15:/#hostname XXXX

In this way, the host name is temporarily changed to XXXX, but the effective host name will not be displayed immediately under the terminal, and a terminal window will be reopened (the terminal connected through ssh needs to reconnect). In this way, the new host name will not be saved in the system, and the host name will be restored to the original host name after rebooting the system.

two。 Permanent modification:

The content of direct editing / etc/hostname is:

XXXX

After rebooting, the name of the host is changed to XXXX, and the reboot remains unchanged.

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