Enable Guest User in Ubuntu 17.10

Enable Guest User in Ubuntu 17.10

sudo sh -c 'printf "[Seat:*]\nallow-guest=true\n" >/etc/lightdm/lightdm.conf.d/40-enable-guest.conf'

Disable Guest User in Ubuntu 17.10

sudo rm /etc/lightdm/lightdm.conf.d/40-enable-guest.conf