** Tags added: eoan

** Description changed:

- probably a "paper cut" issue here. On 16.04.
+ probably a "paper cut" issue here. Issue exist on latest Ubuntu 19.10
+ and older releases, like 18.04 and 16.04.
  
  Changed the hostname of a system recently by opening the system settings
  tool, into details, and typing a new device name.
  
  Noticed afterwards that running sudo commands in the terminal resulted
  in an 'unable to resolve hostname' message, although the commands ran
  successfully.
  
  Checked and it looked like changing the name updates /etc/hostname as
  expected, but it didn't update /etc/hosts for me - it still had:
  
  127.0.0.1 localhost
  127.0.1.1 (old hostname)
  
  Replacing the old hostname with the new one removed the message from the
  terminal when running sudo commands.

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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to gnome-control-center in Ubuntu.
https://bugs.launchpad.net/bugs/1664438

Title:
  updating device name in system settings doesn't update /etc/hosts

Status in gnome-control-center package in Ubuntu:
  Confirmed
Status in unity-control-center package in Ubuntu:
  Confirmed

Bug description:
  probably a "paper cut" issue here. Issue exist on latest Ubuntu 19.10
  and older releases, like 18.04 and 16.04.

  Changed the hostname of a system recently by opening the system
  settings tool, into details, and typing a new device name.

  Noticed afterwards that running sudo commands in the terminal resulted
  in an 'unable to resolve hostname' message, although the commands ran
  successfully.

  Checked and it looked like changing the name updates /etc/hostname as
  expected, but it didn't update /etc/hosts for me - it still had:

  127.0.0.1 localhost
  127.0.1.1 (old hostname)

  Replacing the old hostname with the new one removed the message from
  the terminal when running sudo commands.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1664438/+subscriptions

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