See Moodle for the due date.
Log into the “missing” server. See the second lecture on Remote Computing if you need to brush up on how to do this. There should be a file in your home directory (the directory you end up in after logging in) called hello.txt. Submit the contents of this file on Moodle to get credit for the assignment.
Once you have done that, create a new file in your home directory called hi.txt. You can include any content you want in this file, it just has to have the correct filename.