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Unix Tutorial

Home Software Development Software Development Tutorials Unix Tutorial

Basic

What is Unix?

Uses of Unix

Career In Unix

Install UNIX

Unix Architecture

Unix Commands

VI Command in Unix

AWK Command in Unix

Paste Command in Unix

SED Command in Unix

Sort Command in Unix

WHO Command in Unix

Unix Operators

UNIX Administrator

Advanced

Array in Unix

Functions in Unix

Unix File Permissions

Unix File System

Unix Shell Commands

Crontab in Unix

egrep command in Unix

For Loop in Unix

VI Editor in Unix

What is Unix Shell?

Gnome Development

UNIX Interview Questions

Cheat sheet for UNIX

Unix Sort by Column

Find Command in Unix

Gnome Version

Unix Tutorial

The base of all operating systems like Linux, Ubuntu, Polaris, etc. is the operating system called Unix. Ken Thompson, Dennis Ritchie developed the Unix operating system in AT and T laboratories in 1970. The system structure of the Unix operating system consists of:

  • Layer-1 is hardware.

All hardware related information is present here.

  • Layer-2 is Kernel.

The interaction with hardware and tasks like memory management, task scheduling, etc. is done by the kernel.

  • Layer-3 is shell commands.

Our requests are processed by the utility called a shell.

  • Layer-4 is the application layer.

The external applications are executed by the outermost layer called the application layer.

The Necessity to Learn Unix

The three main reasons to study Unix are:

1. There is robust scope for Unix

To learn the command-line better, to save time, to manage complex file management tasks, etc. we use the Unix operating system which is a powerful programming method. Over the past few years, Unix has grown over other operating systems.

2. The progress in a career with Unix is promising:

The demand for Unix shell scripting professionals is growing in the market every day and the number of experienced professionals in Unix shell scripting is less in the market. The career advancement opportunities for developers and system administrators skilled in Unix shell scripting are high.

3. Growth in salary:

A Unix shell scripting professional can expect an average pay of ninety-seven Thousand dollars in the United States. The salaries for Unix shell scripting job postings are sixty-eight percent higher than the salaries for other job postings.

Applications of Unix

 The applications of Unix are:

  • Supercomputers

The top five hundred supercomputers as of June 2018 run on the Unix operating system.

  • Mobile Devices

Android-based on Unix operating systems is the most popular mobile operating system in the world. Powering phones, tablets, and various smart devices run on the Unix operating system.

  • Internet services

The large-scale web, email, file transfer, storage, etc. run on the Unix operating system.

  • Databases

The largest, fastest databases in the world run on the Unix operating system.

  • Automotive electronics

Entertainment, navigation and security systems run on Unix operating system.

  • Rendering of movie scenes

Motion picture studios use Unix operating systems to run CGI rendering jobs.

  • Notebooks, laptops and desktop computers

Notebooks, laptops and desktop computers, etc. run on the Unix operating system. The Chromebook is a popular, zero maintenance netbook running on Unix operating system. Ordinary laptops and desktops also run on the Unix operating system.

Example

To see the list of files or directories in the current directory of a system running on the Unix operating system, we use the “ls” command. The below snapshot shows the output of the “ls” command.

ls command

Pre-requisites to Learn Unix

A basic understanding of operating systems and their functionalities and understanding of various computer concepts are the prerequisites to learn Unix.

Target Audience

Beginners can refer to this tutorial to understand Unix basics. This tutorial is helpful for people who want to pursue a career in the field of Unix. This tutorial is good learning for all other readers.

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