Change Ubuntu / Debian Hostname after installation

 

Using the terminal,

sudo nano /etc/hostname

 

Using Terminal and graphical editor. (this requires Ubuntu / Desktop desktop edition)

[ Also, this method requires gksu which can be installed using

sudo apt-get -y install gksu

]

gksudo gedit /etc/hostname

 

Change the hostname to what you desire and reboot.

 

To change the hostname for the current session without making permanent change you can also use

 

sudo hostname mnewhost.localdomain

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