Switch #Ubuntu 18.04 to TTY text mode:
sudo init 3 # or use
sudo systemctl isolate multi-user.target
Switch back to graphical mode:
sudo init 5 # or use
sudo systemctl isolate graphical.target
Set TTY text mode as default:
sudo systemctl set-default multi-user.target
Switch back to graphical mode as default:
sudo systemctl set-default graphical.target
Welcome to your niu world ! We are a cute and loving international community Ｏ(≧▽≦)Ｏ !
We are a moderated instance, that aren't supporting harassment nor hateful speech. But we aren't a "safe" space, we won't prevent you to interact with instances that aren't respecting our rules.
"Be conservative in what you send and liberal in what you receive." - Netiquette
The main language used here is English, but for most of us this isn't our main language, so it's a great place to learn!