Creating users in Ubuntu can be done with one of either of two commands: adduser and useradd. This can be a little confusing at first, because both of these commands do the same thing (in different ways) and are named very similarly. I'll go over the useradd command first and then I'll explain how adduser differs. You may even prefer the latter, but we'll get to that in a moment.
First, here's an example of the useradd command in action:
sudo useradd -d /home/jdoe -m jdoe