bash# useradd bob
This will create a user account called bob. If you want to insert more information you can. Take a look at this example:
bash# useradd -c ``John Doe'' john
This adds a little bit of information. This comment is stored in the /etc/passwd file.
To delete an account you can type:
bash# userdel bob
This will erase the account, but the directories will still be there. To erase everything in the home directory use this command instead:
bash# userdel -r john