Connecting to the server
Start Powershell (Linux: Terminal/whatever CLI you want to use) and type (replacing USERNAME with the username given to you):
ssh USERNAME@vceevm.wir.univie.ac.at
Then a message like "The authenticity of host 'vceevm.wir.univie.ac.at (IP)' can't be established.Are you sure you want to continue connecting (yes/no)?" will be shown. Accept this. Then enter your password.
As you type the password it will not be shown. This is normal. You can also copy-paste it. To paste, right-click in the window (Powershell) or press Ctrl+Shift+V (Terminal).
If you are greeted with "Welcome to the VCEE Server!" you have successfully connected to our virtual machine.