Linux Tutorial

The heart of any operating system is called the kernel, it performs all the fundamental stuff like allow the hardware to communicate with the software. The popular operating system are windows, apple operating system X, Linux etc. Linux is an open-source operating system. The functionality of a Linux operating system is like the functionality of the Unix operating system. The scientist by name Linus Torvalds discovered Linux operating system when he was a computer science student. He thought the Unix operating system needed improvements while he was working on Unix operating system, but the designers of Unix rejected his suggestions, and this led to the development of a Linux operating system that allows changes and modifications to be done by the users.

Necessity to learn Linux

The three main reasons to study Linux are:

Linux is an open-source operating system and anyone with the knowledge of programming languages can modify Linux.
Millions of programs and applications are offered by Linux operating system for free.
Not necessary to use antivirus when Linux is installed on the system as Linux is a highly secure system. A community of global development is looking into it to enhance the security time by time. The operating system becomes more robust and secure with each upgrade.
The server environments prefer Linux operating system because it is stable and reliable. The servers based on Linux can run non stop for years without a reboot. Companies like Google, Facebook, Amazon, etc. use Linux for their servers.

Applications of Linux

The applications of Linux are:

Linux is an open-source operating system. The source code of Linux is easily available for everyone.
Linux provides security.
Older computer systems can be revived using Linux.
Softwares can be updated using Linux.
Customization can be done using Linux.
Various distributions can be done using Linux.
Linux is free to use.
The cost of Linux is low.
Linux has large community support.

Example

The built-in command in Linux to display a line of text or string on a standard output or a file, we use echo command in Linux. The below screenshot shows the output after the execution of echo command to print the statement Hello World.

On-Screen, type

Echo “Hello World!”

Prerequisites

The prerequisites to learn Linux is a strong foundation of C programming language, basics on the operation of the operating system and knowledge of computer organization and architecture. To learn about the Linux based operating systems, getting started with an easy to use an operating system like Ubuntu is recommended. But after installing learn how to use the terminal and get familiar with the User interface. Soon update to Arch Linux or Gentoo to know the internal working.

Target Audience

Beginners can refer this tutorial to understand the basics of Linux, a necessity to learn Linux, applications of Linux, example of Linux and the prerequisites to learn Linux. This tutorial is helpful for people who want to pursue a career in the field of Linux. This tutorial is good learning for all other readers.