To continue the Ethernity NODE installation, is easier if you connect to the new installed Ubuntu environment using SSH from another computer.
On a Windows computer, you can download PuTTY from here:
Use the IP address highlighted at the "IP Address" step from above and click on Open.
To login, use the username and the password you configured while installing Ubuntu.
Inside a console on Linux, or Terminal App on macOS, type:
Where username is the username you filled in at Ubuntu setup and ip.address is the IP address found at the last step of the installation.
To authenticate, use the password you configured while installing Ubuntu