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Creating and removing users
Creating users in Ubuntu can be done with one 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.
Using useradd
First, here's an example of the 
useradd
 command in action:
sudo useradd -d /home/jdoe -m jdoe
With this command, I created a user named 
jdoe
. With the 
-d
 option, I'm clarifying 
that I would like a home directory created for this user, and following that, I called 
out 
/home/jdoe
 as the user's home directory. The 
-m
 flag tells the system that I would 
like the home directory to be created during the process; otherwise, I would've had 
to create the directory myself. Finally, I called out the username for my new user (in 
this case, 
jdoe
).
Ubuntu Server automatically gives the first user account you create 
during installation access to 
sudo
.

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Managing Users and Permissions