What you should do after you install the Linux operating system

1. Start the system

Usually Lilo is installed on the MBR, after the computer starts, the MBR program is executed, there will be a not very beautiful graphics: the left side is a small red hat image, the right list of the operating system can be started, you can use the keyboard arrows to switch. After the installation of the default is Linux, that is, you do not choose, a moment to start their own Linux.

If you want the default choice is windows, then you can start Linux, with VI modify the/ETC directory under the lilo.conf file, plus default=windows, and then perform/Sbin/lilo regenerate Lilo.

2. User Login

Linux is a real multi-user operating system, users want to use the system, must first log in, after the use of the system, must exit. When the user logs on to the system, the user name and password must be entered in order to enable the system to identify the user, and the system can be authenticated before logging into the system.

There are two types of users under Linux:

1 root User: Superuser, the owner of the system, and only one root user in the Linux system, it can operate in the system. The password that is set when the system is installed is the root user's password.

2 Ordinary users: Linux systems can create many ordinary users, and assign them the appropriate permissions, so that their limited use of Linux systems.

Regarding the user's management, we will explain in detail later.

The user login is divided into two steps:

1 Enter the user's login name, the system according to the login to identify users;

2 Enter the user's password, the password is a user's choice of a string, to other users completely confidential, is the only way to identify users when the system is logged on, so every user should protect their password!

At the beginning of the system, only the root user, and the other users were created by the root user. Because the root user has too much permissions, it can cause significant damage if the root user is mistakenly operating. Therefore, it is recommended that the system administrator to create a new user, only need to do system maintenance, management tasks to log in as root user.

Here is a login instance: (of which bold text is input)

Red Hat Linux release 7.1 (Seawolf)
Kernerl 2.4.2-2 on an i686
Home login:root
Password:

In the above example, we found that after the password is empty, in fact, is not to enter the password, but in the input, the Linux system will not display it, so as to protect the password!

If the login succeeds, we will get the shell (shell is used to interact with the user program, it is like the Command.com in DOS, but in Linux can have a variety of shell options, such as Bash, CSH, ksh, etc.) prompts, If you log in as root, the prompt you get is "#", otherwise it will be "$".

Tip: If the installation is set to start on the GUI, the system starts, the user login interface will be graphical, a bit like windows, and when you enter the correct username and password, you will go directly to X Window. This setting can be modified:

There is a inittab file in the/etc directory with one row of configuration:

id:3:default

In which, the number 3 is to represent a start into the character terminal, if 5 to represent a start into the X Window.