changing hostname in ubuntu

I cloned a virtual server and late realised they had the same hostname.

No problem.

  1. change the hostname in /etc/hostname:
sudo nano /etc/hostname
  1. change the hostname in /etc/hosts:

this file will contain localhost and your old hostname. eg, localhost <new-host-name>

edit this file to suit.

Finally, change the hostname in the current session:

This can be done one of two ways. Restart the system, or issue the following command:

sudo hostname <new-host-name>

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