adduser is used to create a login for a new user.
It must be given the following arguments:
login_name
This is the name entered by the user when logging in.
It can be no longer than eight alphanumeric characters.
name
This is the user's full name.
It identifies the person to whom the login is assigned.
If name contains spaces, it must be in quotes.
user_ID
This is the numerical user ID that will be associated
with the login_name.
It must be between 100 and 60,000
and must be unique for each user.
logdir
This is the user's home directory.
It must be a valid directory name
and cannot already exist on the system.
Typically the user's home directory matches the login name.
For example, the home directory for
the owner of login name ams
might be /usr/ams.
Yes | No
If the user will have system administration privileges.