| Files | Description |
|---|---|
| /etc/passwd | Where the user's name, and other pertinent information are stored. This includes the password unless your system is using shadow passwords. |
| /etc/shadow | Where the user's password is stored if you are using shadow passwords. |
| /etc/group | Where group names are stored. |
| /etc/aliases | Where the user's name is matched to a nickname for e-mail. |
| /etc/sudoers | A list of users with special privileges along with the commands they can execute. |