Ruby Programming: Coding For Beginners: Coding With Ease

Download Ruby Programming: Coding For Beginners: Coding With Ease

Welcome to Ruby Programming: Coding For Beginners Coding with Ease, a book designed to take you through the baby steps of understanding how to program with Ruby. Ruby is a fantastic beginner language that’s extremely easy to learn because the language was developed to making programmers happy. It may not be the fastest code, but it’s the code that will make you happy.

In the first chapter, we’ll go over the foundation, which means we’ll go over

• How RAM works and what a memory pointer is

• What the core components of a computer are and their uses

• The core difference between 32-bit processors and 64-bit processors and why 64-bit processors take more RAM

• How it all relates to programming

Then, in the second chapter, we will cover Variables, Data Types, and Operators. In a single chapter, we will go over topics that colleges take weeks to explain to students. This includes how to assign variables, the differences between Arrays and Hashes, and a simple explanation as to what Symbols are. In the third chapter, we’ll go over how to save and run Ruby files, what the IRB is for, and what programs to use in order to write longer, more complex Ruby files.

In the remaining chapters, we’ll go over:

• How To Comment for both Single Line comments and Multiline Comments

• What Control Flow is and What Control Flow Statements are

• The Three Primary Loops inside of Ruby, how to write them, and an implicit explanation on when to use such loops

• What one and zero means for some Control Flow Statements

• How to write Functions and call on them

In this book, we go over the basics of Ruby with a fine toothbrush to make sure you understand each part as you learn it. As we say in Ruby, don’t just write code, write beautiful code.

Mastering Bash

Download Mastering Bash

System administration is an everyday effort that involves a lot of tedious tasks, and devious pits. Knowing your environment is the key to unleashing the most powerful solution that will make your life easy as an administrator, and show you the path to new heights. Bash is your Swiss army knife to set up your working or home environment as you want, when you want.

This book will enable you to customize your system step by step, making your own real, virtual, home out of it. The journey will take you swiftly through the basis of the shell programming in Bash to more interesting and challenging tasks. You will be introduced to one of the most famous open source monitoring systems-Nagios, and write complex programs with it in any languages. You'll see how to perform checks on your sites and applications.

Moving on, you'll discover how to write your own daemons so you can create your services and take advantage of inter-process communication to let your scripts talk to each other. So, despite these being everyday tasks, you'll have a lot of fun on the way. By the end of the book, you will have gained advanced knowledge of Bash that will help you automate routine tasks and manage your systems.

What you will learn

Understand Bash right from the basics and progress to an advanced level

Customise your environment and automate system routine tasks

Write structured scripts and create a command-line interface for your scripts

Understand arrays, menus, and functions

Securely execute remote commands using ssh

Write Nagios plugins to automate your infrastructure checks

Interact with web services, and a Slack notification script

Find out how to execute subshells and take advantage of parallelism

Explore inter-process communication and write your own daemon