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The Linux DevOps Handbook

The Linux DevOps Handbook

By : Damian Wojsław, Grzegorz Adamowicz
4.7 (7)
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The Linux DevOps Handbook

The Linux DevOps Handbook

4.7 (7)
By: Damian Wojsław, Grzegorz Adamowicz

Overview of this book

The Linux DevOps Handbook is a comprehensive resource that caters to both novice and experienced professionals, ensuring a strong foundation in Linux. This book will help you understand how Linux serves as a cornerstone of DevOps, offering the flexibility, stability, and scalability essential for modern software development and operations. You’ll begin by covering Linux distributions, intermediate Linux concepts, and shell scripting to get to grips with automating tasks and streamlining workflows. You’ll then progress to mastering essential day-to-day tools for DevOps tasks. As you learn networking in Linux, you’ll be equipped with connection establishment and troubleshooting skills. You’ll also learn how to use Git for collaboration and efficient code management. The book guides you through Docker concepts for optimizing your DevOps workflows and moves on to advanced DevOps practices, such as monitoring, tracing, and distributed logging. You’ll work with Terraform and GitHub to implement continuous integration (CI)/continuous deployment (CD) pipelines and employ Atlantis for automated software delivery. Additionally, you’ll identify common DevOps pitfalls and strategies to avoid them. By the end of this book, you’ll have built a solid foundation in Linux fundamentals, practical tools, and advanced practices, all contributing to your enhanced Linux skills and successful DevOps implementation.
Table of Contents (20 chapters)
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1
Part 1: Linux Basics
6
Part 2: Your Day-to-Day DevOps Tools
12
Part 3: DevOps Cloud Toolkit

Understanding scripting

A shell script is a simple text file filled with commands. Unlike compiled programs, shell scripts are not evaluated before execution, but rather while they are being executed. This makes for a very quick development process – there’s no compilation at all. But at the same time, the execution is a bit slower. Also, the errors that the compiler would have caught surface during execution and can often lead to script exiting.

On the upside, there’s not much to learn when you are writing a script – much less than when you are writing a program in C or Python. Interacting with system commands is as simple as just typing their names.

Bash lacks a lot of sophistication in programming languages: there are not many data types and structures, there’s very rudimentary control of scope, and the memory implementation is not meant to be efficient with scale.

There’s not one good rule of thumb for choosing when to write a...

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