This book is written for system administrators and developers that need to know how to deploy and manage their workloads in Azure. This means that you have already day-to-day experience of operational tasks. It helps if you already have some experience of using the command line and writing scripts, but it's not strictly necessary. Hence, the scripting examples in this book are not perfect. A pragmatic approach is taken to help you understand the technology in Azure and get the job done.

To get the most out of the book, it is very important that you use this book as a workbook. Go and sit behind your computer and go through all the examples. This is the only way to really understand the topics covered in this book. The only things you need are as follows:

• A computer with Linux, Windows 10, or macOS installed
• An internet connection so you are able to connect to Azure

I am also a big fan of virtual machines, running in Azure or not. You can play without breaking your daily workstation, and on top of that, you can easily redeploy them or use snapshots to undo or replay the steps you have taken.

You can download the example code files for this book from your account at www.packtpub.com. If you purchased this book elsewhere, you can visit www.packtpub.com/support and register to have the files emailed directly to you.

You can download the code files by following these steps:

1. Log in or register at www.packtpub.com.
2. Select the SUPPORT tab.
3. Click on Code Downloads & Errata.
4. Enter the name of the book in the Search box and follow the onscreen instructions.

Once the file is downloaded, please make sure that you unzip or extract the folder using the latest version of:

• WinRAR/7-Zip for Windows
• Zipeg/iZip/UnRarX for Mac
• 7-Zip/PeaZip for Linux

The code bundle for the book is also hosted on GitHub at https://github.com/PacktPublishing/Hands-On-Linux-Administration-on-Azure. In case there's an update to the code, it will be updated on the existing GitHub repository.

We also have other code bundles from our rich catalog of books and videos available at https://github.com/PacktPublishing/. Check them out!

We also provide a PDF file that has color images of the screenshots/diagrams used in this book. You can download it here: https://www.packtpub.com/sites/default/files/downloads/HandsOnLinuxAdministrationonAzure_ColorImages.pdf.

There are a number of text conventions used throughout this book.

CodeInText: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "Let's make another change in the sshd_config file."

A block of code is set as follows:

[Mount] 
What = /dev/sdc1 
Where = /home/finance 
Type = xfs 
Options = defaults

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

[Mount] 
What = /dev/sdc1 
Where = /home/finance 
Type = xfs 
Options = defaults

Any command-line input or output is written as follows:

sudo cp /etc/ssh/sshd_config /tmp
sudo sed -i 's/#Port 22/Port 22/' /etc/ssh/sshd_config

Bold: Indicates a new term, an important word, or words that you see onscreen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "If you click on Download template and parameters, you'll get the next screen."