User management is a fundamental skill associated with the need to manage a server, and in this respect, it will inevitably represent a milestone when troubleshooting any system. So, with this in mind, we will quickly analyze the process of managing users in order to dispel any confusion.
You can add a new user (and create a home folder for them) by using the following command:
# adduser <username>
You can provide the new user with a password like this:
# passwd <username>
Alternatively, if you would like to force a password reset, thereby implying that a user must reset his/her password, then the following command will suffice:
# chage -d 0 <username>
In addition, you can null a password for a specific user by typing:
# usermod -p "" <username>
However, if you would like to grant this new user the ability to use sudo, then type:
# gpasswd -a <username> wheel
Finally, if you would like to know more about a user...