sudo useradd -m -s /bin/bash
sudo useradd -m -s /bin/bash <name>
Risk: Careful
What it does
Adds a new user to the server.
When to use it
When a new person or program needs its own key.
Example
$ sudo useradd -m -s /bin/bash ainaAina, with a home folder and the bash shell.
Learn it in: Users, groups and sudo · Official docs