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sudo nano /etc/hostname
sudo nano /etc/hosts

With above I couldn't change the name, because there is an error showing :

read only permission

at the bottom of the window

1

You can use sudoedit (see man sudoedit) to edit those files as,

sudoedit /etc/hostname
sudoedit /etc/hosts

They're protected against casual modification.

  • It's nice support it workout..thanks..but after reboot hostname was same as old..It did not change permanently. Pls let me know how to change the hostname permanently. ..thanks again.. – Migara Feb 1 '17 at 10:57
  • I'm working on kernel GNU/Linux 4.4.0-47-generic 1606 – Migara Feb 1 '17 at 11:09

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