LINUX Beginner's Crash Course: Linux for Beginner's Guide to Linux Command Line, Linux System & Linux Commands

© Copyright 2015 – All rights reserved.

In no way is it legal to reproduce, duplicate, or transmit any part of this document in either electronic means or in printed format. Recording of this publication is strictly prohibited and any storage of this document is not allowed unless with written permission from the publisher. All rights reserved.

The information provided herein is stated to be truthful and consistent, in that any liability, in terms of inattention or otherwise, by any usage or abuse of any policies, processes, or directions contained within is the solitary and utter responsibility of the recipient reader. Under no circumstances will any legal responsibility or blame be held against the publisher for any reparation, damages, or monetary loss due to the information herein, either directly or indirectly.

Respective authors own all copyrights not held by the publisher.

Legal Notice:

This book is copyright protected. This is only for personal use. You cannot amend, distribute, sell, use, quote or paraphrase any part or the content within this book without the consent of the author or copyright owner. Legal action will be pursued if this is breached.

Disclaimer:

Please note the information contained within this document is for educational and entertainment purposes only. Every attempt has been made to provide accurate, up to date and reliable complete information. No warranties of any kind are expressed or implied. Readers acknowledge that the author is not engaging in the rendering of legal, financial, medical or professional advice.

By reading this document, the reader agrees that under no circumstances are we responsible for any losses, direct or indirect, which are incurred as a result of the use of information contained within this document, including, but not limited to, errors, omissions, or inaccuracies.

Table of Contents

Introduction

Chapter 1: Linux & Other Operating Systems

What is Linux?

Advantages of Linux

Crash free

Security

Free & shareable

Compatibility

Flexibility

The Linux community

Features of Operating Systems

Memory management

Processor management

Device management

File management

Other important activities

Types of operating systems

Batch operating systems

Timesharing operating systems

Distributed operating systems

Network operating systems

Real-time operating systems

Chapter 2: Components, Features & Architecture of Linux

Components

Features

Architecture

Chapter 3: The Linux Kernel

Kernel sources

Chapter 4: Linux Processes

task_struct

State

Scheduling information

Identifiers

Inter-process communication (IPC)

Links

Times & timers

File systems

Virtual memory

Processor specific context

How Linux organizes data

Devices

Chapter 5: Linux File Systems

Chapter 6: Inter-Process Communication

Chapter 7: Linux Shell

Shell scripts

Reasons to write shell scripts

How to write shell scripts

Basic command line editing

Executing a command

Bash shell commands

Chapter 8: Command Line Tutorial

Shortcuts

Basic navigation

Paths

Absolute & relative paths

Building blocks

Chapter 9 – Moving Around Linux

Tab completion

Files

Extensionless system

Linux is case sensitive

Spaces in names

Quotes

Escape characters

Hidden files & directories

Manual pages

Searching

More on running commands

Making a directory

Removing a directory

Creating a blank file

Copying a file or directory

Renaming files & directories

Removing a file

Removing non-empty directories

Wildcards

Under the hood

Some more examples

Some real-world examples

Permissions

Viewing permissions

Changing permissions

Setting permissions shorthand

Permissions for directories

The root user

Basic security

Chapter 10: The vi Text Editor

Saving & exiting

Other ways to view files

Navigating a file in vi

Deleting content

Undoing

Taking it further

Conclusion

Introduction

Linux was once thought of as an underdog operating system, and for some time it remained in obscurity overshadowed by the mighty Windows. But more recently, Linux has been winning accolades among software developers and businesses. This Unix variant, once only known to geeks and nerds, is now gaining popularity among ordinary home computer users, too.

Linux is free of charge and runs on different platforms. It has been amassing a dedicated user base and is increasingly drawing interest from:

●  People who are acquainted with Unix and interested in running it on personal computers

●  People who are interested in experimenting with the principles of operating systems

●  People who want an operating system which gives them maximum control

●  People who are not satisfied with Microsoft Windows

Managing Linux is more difficult than using Windows, but Linux is more flexible and has more configuration options.

Corporations also seem to be conquering their irrational suspicion of Linux and are adapting Linux for many business applications. Because Linux is open source, companies need not worry about licensing when making such adaptations. That makes it a pretty attractive proposition.

Chapter 1: Linux & Other Operating Systems

If you are a computer programmer you already know about Linux. If not, you may have read about it or heard about it from one of your friends. Either way, Linux is interesting, and the more you learn about Linux, the more interesting questions you’ll have about it.

What is Linux?

In general, there are two types of PC users. Most people look at the computer as an amazing tool for cool stuff like browsing, playing games, watching movies and listening to music. They might even know about the hardware components like RAM, processors, and audio and video cards. But they don’t really care about the complexity behind these simple processes. They open a browser, type the address and somehow the website opens. They are not interested in knowing how it happens.

Then there is a second set of people who are actually interested in knowing how things work internally. Almost everyone considers an operating system