Linux operating system uses the multiuser environment to provide different types of instructions to a different user. It uses a common method for managing the users and authentication with the help of username and password. This method is known as the login method. This method basically uses to check the authorized user and provide required data or file on the base of user authentication, this process also uses in networking for accessing the authorized user. In Linux system, the user identified by the symbol. Red hat enterprise Linux provides graphical icons to manage the login system.
1. Switching between console and graphic:
Linux System provides the console to define the commands and generate output, there is 6 console are available in Linux for defining the user instructions. Linux system also provides graphically tool for managing graphically tool for managing the user instruction with the graphical interface. We can switch from console area to graphics area using alt+control+F7 and graphical to console use alt+control+F6. The graphical interface provides a different resizable window to define the command and get output.
2. An element of the x-window system:
X-window system in the part of the graphical environment of Linux system. A provide different applications to manage the user interaction through a graphical environment of Linux system. An institute MIT developed graphical tools for X-window system and implemented in Unix. Operating System to control the user using graphical environment. It supports different type of windows to open the files in the screen and can display more than one window at a time, this system also supports networking process to send or receive the files between the client and server machine.
It is a program that responsible for handling and controlling the output devices through the interface like output keyboard mouse etc. It accepts the request from the client machine and provides a response to the system.
It is a program that has applications to send the request to the server machine and get the response. A server connected to multiple client machines with the help of networking.
C) Communication between x-client and x-server:
X-server and x-client machine are connected together for processing the communication like shared memory, device sharing etc. The client machine connected to the server with the help of networking to send the request and get respond through server machine.
Rad hat provides for the x-window system is x-org. A provide open source software related to x-package. It is a package that provides lock can fee with a graphical environment for controlling the user instruction. This organization provides a common disk of an environment with different graphical tools. Red hat provider also uses GNOME, KDE for the graphical process.
E) Starting x-server:
X-server provides graphical icon different resizable windows to manage the instructions. A command starts or uses an alt+control+F7 key.
3. Changing Password:
Linux system use login network to check the user and password then provide the required file or data to an authorized user. The superuser and change the password with a new password and need to maintain password rules like lower-upper case, password at least and character.
It is a command that allows changing the password of existing user. In this, we define the username and new password with confirmation.
2. Root User:
In this the superuser of Linux operating system that similar to the administrator of window operating system. The command from the display with (#) symbol alters login with superuser. This user able to manipulate the system processing and configuration. The root user also able to set the privileges to another user and modify configuration also.
3. Changing Identity:
Linux system provides the multiuser environment and access with the help of login system. The user can also switch from one user to another user for managing the file and contains authorized a user.
4. Su Command:
It is a command that allows switching user from current to another. We use (ctrl+d) to layout current user. We pass username with this command where we want to switch and define the required password.
5. Editing Text File:
We create the file with the help of command and Linux System represent the configuration file in the form of text. At a command from the files & it contains are not open in editing note. So Linux system provides text editor to modify the content of the file on the base of requirement.
6. Nano Command:
It is a text editor command that allows modifying the contents of the file in this command we pass the file name as arguments that open with a new window to edit the text. It supports shortest keys to control the user instructions. in this we pass cntrl+G for help, Ctrl+O for writing out, Ctrl+R for reading the file, Ctrl+X for an exit, Ctrl+J for justifying, Ctrl+W for the current location, Ctrl+V for next page, Ctrl+U for based the text, Ctrl+T for checking the spelling.