How do I disable the guest account on Ubuntu 13.10 (Saucy)

Question

Yes! I want to get rid of the guest account on Ubuntu. How do I do this??

I do not want this account but neither I find it in /etc/passwd and /etc/group nor within the users by navigating to system Settings -> user accounts...

Answer 1

1. Open /etc/lightdm/lightdm.conf.d/50-unity-greeter.conf with root rights.
2. Append the line allow-guest=false
3. Reboot.

Answer 2

I don't know if you can remove the account, but you can disable it : it won't be an option at login.

• Edit /etc/lightdm/lightdm.conf

  sudo nano /etc/lightdm/lightdm.conf
  

• Add the following line at the end :

  allow-guest = false
  

• Save CTRL + O

• Quit the text-editor CTRL + X

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Or in one command-line :

echo "allow-guest = false" | sudo tee -a /etc/lightdm/lightdm.conf