Any messages of the day or important information are then displayed, and finally, the user gains access to the system. In this case, the user is given a Unix prompt. All users will get a menu system rather than a Unix prompt when they login, but everyone will have access to the Unix prompt through the menu system. More advanced users can turn the menu system off altogether. The first thing you should do when you login for the first time is change your password .
Passwords are the first line of defense in maintaining a secure system.
The above shows a successful change of password. The user typed the passwd command, then entered the old password, followed by a new password. The user was asked to re-enter the new password, to make sure it was typed correctly. If the new password matches both times it is typed in, then it the Unix system will accept the change. However, if the two are different, an error will appear saying that the two do not match, and the user will have to type them in again.