What option allows you to add the user's full name to the account?

What option allows you to add a password to the user account? What is odd about this?

What do you need to add the front of the 'useradd' command to make it work?  (hint:  should anyone be allowed to create new users?)

Run the command 'useradd fred'.  What happens?

What is the command to count the number of users on the system (hint the file '/etc/passwd/'contains all users, one per line).

Delete the file 'planet' from your home directory.