adduser(1M)

adduser -- create a login for a new user

Synopsis

adduser login_name name user_ID logdir Yes|No

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.