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Entering and exit system
In the Linux system, the system administrator assigns a user name and an initial password when establishing a new account for the user. In addition, the Linux system gives a computer to a host name. The host name is used to identify independent computers on the network (even if the user's computer is not connected, there should be a host name). The default host name given by the TurboLinux system is: localhost. In the following example, we assume that the user name is "xxq", the host name is "localhost". Enter System (Login) Super User Log in to the user's username ROOT, the password is set when the system is installed. After the system starts successfully, the screen displays the following tips: localhost login: When you enter the super user name "root", then type the Enter key. At this point, the user will see the prompt of the input password on the screen: localhost login: root password: When you need to enter a password. When you enter a password, the password will not be displayed on the screen. If the user enters the wrong password, you will see the following information on the screen: login incorrtain. You need to re-enter. When the user correctly enters the username and password, it can legally enter the system. Screen display: [root @ loclhost / root] # This time indicated that the user has logged in to the system and can operate. Here "#" is a system prompt of a super user. After the ordinary user logs in to establish a normal user account, it can be logged in. When logging in, the user sees the following tips on the screen: localhost login: At this time, enter the username "XXQ" and type the Enter key. At this point, the user will see the prompt of the input password on the screen: localhost login: XXQ Password: When you need to enter a password. When you enter a password, the password will not be displayed on the screen. If the user enters the wrong password, you will see the following information on the screen: login incorrtain. You need to re-enter. When the user correctly enters the username and password, it can legally enter the system. Screen display: [xxq @ loclhost xxq] $ This time indicated that the user has logged in to the system and can be operated. Modify the password to better protect user accounts, Linux allows users to modify their passwords at any time, modify the password command is Passwd, which will prompt the user to enter the old password and new password, and then ask the user to confirm the new password again to avoid The user is inadvertently pressing the wrong button. If the user forgets the password, you can ask the system administrator to reset one for yourself. Virtual Console Linux is a real multi-user operating system, which means that it can accept multiple users simultaneously. Linux also allows a user to log in multiple times, because Linux and many versions of UNIX provide a virtual console access method, allowing users to be directly connected from the console at the same time (system console is directly connected to the system. Multiple logins for multiple logins. The selection of the virtual console can be implemented by pressing the Alt key and a function key, usually using F1-F6. For example, after the user logs in, press the ALT-F2 key to see the "login:" prompt, indicating that the user sees the second virtual console. Then just press the ALT-F1 key to return to the first virtual console. A newly installed Linux system allows users to use ALT-F1 to ALT-F6 keys to access the first six virtual console.
