Linux shell scripting cookbook: solve real-world shell scripting problems with over 110 simple but incredibly effective recipes

In Detail GNU/Linux is a remarkable operating system that comes with a complete development environment that is stable, reliable, and extremely powerful. The shell being the native interface to communicate with the operating system is capable of controlling the entire operating system. There are numerous commands on Linux shell which are documented but hard to understand. The man pages are helpful but they are very lengthy and it does not give any clues on key areas where commands can be used. Proper usage of shell commands can easily solve many complex tasks with a few lines of code, but most linux users don't have the right know-how to use the Linux shell to its full potential. Linux Shell Scripting Cookbook is a collection of essential command-line recipes along with detailed descriptions tuned with practical applications. It covers most of the commands on Linux with a variety of usecases accompanied by plenty of examples. This book helps you to perform complex data manipulations involving tasks such as text processing, file management, backups and more with the combination of few commands. Linux Shell Scripting Cookbook shows you how to capitalize on all the aspects of Linux using the shell scripting language. This book teaches you how to use commands to perform simple tasks all the way to scripting complex tasks such as managing large amounts of data on a network. It guides you on implementing some of the most common commands in Linux with recipes that handle any of the operations or properties related with files like searching and mining inside a file with grep. It also shows you how utilities such as sed, awk, grep, cut can be combined to solve text processing related problems. The focus is on saving time by automating many activities that we perform interactively through as browser with a few lines of script. This book will take you from a clear problem description to a fully functional program. The recipes contained within the chapter will introduce the reader to specific problems and provide hands-on solutions. This practical book will help you gain control over all the aspects of Linux using the powerful shell scripting language Approach This book is written in cookbook style and it offers learning through recipes with examples and illustrations. Each recipe contains step-by-step instructions about everything necessary to execute a particular task. The book is designed so that you can read it from start to end for beginner's or just open up any chapter and start following the recipes as a reference for advanced users. Who this book is for If you are a beginner or an intermediate user who wants to master the skill of quickly writing scripts to perform various tasks without reading the entire man pages, this book is for you. You can start writing scripts and one-liners by simply looking at the similar recipe and its descriptions without any working knowledge of shell scripting or Linux. Intermediate/advanced users as well as system adminstrators/ developers and programmers can use this book as a reference when they face problems while coding. Annotation If you have web hosting requirements beyond the most basic, you should look for a host that offers cPanel. cPanel gives you tight control over every aspect of your web site, email accounts, and domain names.cPanel is the leading control panel for managing your hosted web account. Using cPanel you can install popular web scripts, manage FTP and email accounts, control your site's security, and much more. But once you've got a web site with cPanel support, how do you go about using it? While the documentation included with cPanel may provide a quick reference, to really get the most from it you need a more detailed, systematic tutorial. Read this book to find out exactly how to get the most from cPanel in all aspects of your web site management: web, email, FTP, security, domains, back ups, and more. Reading this book, you will:?Learn how to find hosts that offer cPanel with their web hosting packages?Discover how to access your cPanel account in several different ways, even behind a firewall?Familiarize yourself with the standard cPanel layout so you can find what you are looking for quickly?Discover what the information you see on the main cPanel interface means and how to use it to keep track of what is happening with your hosting account?Create, manage and remove FTP accounts so you (or your web master) can upload, access and remove files from your website?Set up, manage and learn how to access e-mail accounts, including e-mail aliases (forwarding), web mail access, e-mail quotas, mail filtering, spam blocking and mailing lists?Create, manage and delete databases from within cPanel?Learn how to protect and control access to information on your web site using the tools that cPanel provides?Monitor site traffic using web stats?Discover how to create an effective backup strategy using cPanel?s web site backup and restore features?Explore some advanced tools that cPanel offers to help manage your web site?Learn basic techniques to keep your web site safe from hackers and learn what to do if the worst happens?Examine some common third-party add-ons and themes that your host may choose to offer?Discover a wealth of external tools that make the aspiring web master?s job easierApproach?An easy to follow, practical guide with abundant screenshots along with clear instruction and explanation.?Covers how to use cPanel, and also offers crucial advice on making the most of the application and avoiding common web master pitfalls.?Carefully arranged to act as a step-by-step tutorial and a handy desktop referenceWho this book is written for?Anybody who has a web hosting account that provides cPanel, and who wants to get the most from this very powerful tool

In Detail

Many businesses want to run their email servers on Linux for greater control and flexibility of corporate communications, but getting started can be complicated. The attractiveness of a free-to-use and robust email service running on Linux can be undermined by the apparent technical challenges involved. Some of the complexity arises from the fact that an email server consists of several components that must be installed and configured separately, then integrated together.

This book gives you just what you need to know to set up and maintain an email server. Unlike other approaches that deal with one component at a time, this book delivers a step-by-step approach across all the server components, leaving you with a complete working email server for your small business network.

Starting with a discussion on why you should even consider hosting your own email server, the book covers setting up the mail server. We then move on to look at providing web access, so that users can access their email out of the office. After this we look at the features you'll want to add to improve email productivity: virus protection, spam detection, and automatic email processing. Finally we look at an essential maintenance task: backups.

Written by professional Linux administrators, the book is aimed at technically confident users and new and part-time system administrators. The emphasis is on simple, practical and reliable guidance.

Based entirely on free, Open Source software, this book will show you how to set up and manage your email server easily.

A simple step-by-step guide to setting up a Linux email server using the most popular free Open Source tools like PostFix, ProcMail, SpamAssassin, ClamAV, and others

Approach

The book takes a practical, step-by-step approach to working with email servers. It starts by establishing the basics and setting up a mail server. Then you move to advanced sections like webmail access, security, backup, and more. You will find many examples and clear explanations that will facilitate learning.

Who this book is for

This book is aimed at technically confident users and new and part-time system administrators in small businesses, who want to set up a Linux-based email server without spending a lot of time becoming expert in the individual applications. Basic knowledge of Linux is expected.

In Detail

The Common UNIX Printing System (CUPS) is software that allows a computer to act as a print server, receiving print jobs from client computers, managing them, and sending them to the appropriate printer. It consists of a print spooler and scheduler, filters to convert print jobs to the format required by each printer, and a backend system to send the data to the chosen printer from client applications. Since every printer manufacturer does things differently, printing can be very complicated, and has always been a hard issue in the UNIX world for this reason. By providing a portable, modular printing layer, CUPS brings printing for UNIX into the modern age. It applies open standards for network printing through the Internet Printing Protocol (IPP) and uses platform-independent drivers (Postscript Printer Definition, PPD) to print. Today, CUPS is the default printing system for a large number of Linux distributions (Ubuntu, Fedora, etc.) and UNIX-based operating systems.

This book assumes that you have no knowledge of CUPS. It starts by telling you the story of how CUPS came to be and why there is such excitement about it. We then move on to installing, compiling, and managing your print network. Haven't you struggled to find the right directives for your printer? Enough of that search, this book will tell you where to find what. Not only that, but widely used directives and their uses are explained here along with directions to use them. There is more: you can learn how to manage the ever increasing print job load, set up your clients, and manage users. All this done, you will learn how to monitor, filter, and secure your CUPS server.

A practical tutorial to installing, managing, and securing this powerful printing system

Approach

This book takes a tutorial approach and each chapter contains step-wise instructions to perform specific tasks.

Who this book is for

This book is for Linux/Unix System Administrators interested in designing and setting up a CUPS network and provides enough knowledge to understand how the technology works, make decisions about deployment, and then implement a stable work environment. No knowledge in CUPS is required but readers need to be comfortable with working in the Linux/Unix environment. On the whole, readers should have basic knowledge of the Linux environment.

Annotation GNU/Linux is a remarkable operating system that comes with a complete development environment that is stable, reliable, and extremely powerful. The shell being the native interface to communicate with the operating system is capable of controlling the entire operating system. There are numerous commands on Linux shell which are documented but hard to understand. The man pages are helpful but they are very lengthy and it does not give any clues on key areas where commands can be used. Proper usage of shell commands can easily solve many complex tasks with a few lines of code, but most linux users don't have the right know-how to use the Linux shell to its full potential. Linux Shell Scripting Cookbook is a collection of essential command-line recipes along with detailed descriptions tuned with practical applications. It covers most of the commands on Linux with a variety of usecases accompanied by plenty of examples. This book helps you to perform complex data manipulations involving tasks such as text processing, file management, backups and more with the combination of few commands. Linux Shell Scripting Cookbook shows you how to capitalize on all the aspects of Linux using the shell scripting language. This book teaches you how to use commands to perform simple tasks all the way to scripting complex tasks such as managing large amounts of data on a network. It guides you on implementing some of the most common commands in Linux with recipes that handle any of the operations or properties related with files like searching and mining inside a file with grep. It also shows you how utilities such as sed, awk, grep, cut can be combined to solve text processing related problems. The focus is on saving time by automating many activities that we perform interactively through as browser with a few lines of script. This book will take you from a clear problem description to a fully functional program. The recipes contained within the chapter will introduce the reader to specific problems and provide hands-on solutions. This practical book will help you gain control over all the aspects of Linux using the powerful shell scripting language There are definite advantages to running your corporate e-mail on Linux. This step-by-step guide explains how easy it is to set up your own e-mail server and implement advanced features. Overview This book is aimed at technically confident users and new and part-time system administrators in small businesses, who want to set up a Linux-based email server without spending a lot of time becoming expert in the individual applications. Basic knowledge of Linux is expected. What you will learn from this book? You Many businesses want to run their email servers on Linux for greater control and flexibility of corporate communications, but getting started can be complicated. The attractiveness of a free-to-use and robust email service running on Linux can be undermined by the apparent technical challenges involved. Some of the complexity arises from the fact that an email server consists of several components that must be installed and configured separately, then integrated together. This book gives you just what you need to know to set up and maintain an email server. Unlike other approaches that deal with one component at a time, this book delivers a step-by-step approach across all the server components, leaving you with a complete working email server for your small business network. Starting with a discussion on why you should even consider hosting your own email server, the book covers setting up the mail server. We then move on to look at providing web access, so that users can access their email out of the office. After this we look at the features you'll want to add to improve email virus protection, spam detection, and automatic email processing. Finally we look at an essential maintenance backups. Written by professional Linux administrators, the book is aimed at technically confident users and new and part-time system administrators. The emphasis is on simple, practical and reliable guidance. Based entirely on free, Open Source software, this book will show you how to set up and manage your email server easily. Annotation. The Common UNIX Printing System (CUPS) is software that allows a computer to act as a print server, receiving print jobs from client computers, managing them, and sending them to the appropriate printer. It consists of a print spooler and scheduler, filters to convert print jobs to the format required by each printer, and a backend system to send the data to the chosen printer from client applications. Since every printer manufacturer does things differently, printing can be very complicated, and has always been a hard issue in the UNIX world for this reason. By providing a portable, modular printing layer, CUPS brings printing for UNIX into the modern age. It applies open standards for network printing through the Internet Printing Protocol (IPP) and uses platform-independent drivers (Postscript Printer Definition, PPD) to print. Today, CUPS is the default printing system for a large number of Linux distributions (Ubuntu, Fedora, etc.) and UNIX-based operating systems. This book assumes that you have no knowledge of CUPS. It starts by telling you the story of how CUPS came to be and why there is such excitement about it. We then move on to installing, compiling, and managing your print network. Haven't you struggled to find the right directives for your printer? Enough of that search, this book will tell you where to find what. Not only that, but widely used directives and their uses are explained here along with directions to use them. There is more: you can learn how to manage the ever increasing print job load, set up your clients, and manage users. All this done, you will learn how to monitor, filter, and secure your CUPS server

if You Are Running A Web Host Or Web Space Reseller Then The Chances Are You'll Be Using Webhost Manager. This Book Shows You How To Get The Most From The Software, For Both You And Your Customers. It Provides Solutions To Common Whm Problems And Pitfalls, Leading To Better Customer Service Provided At Lower Cost.
you Will Learn How To Set Up Whm Securely, Offer A Variety Of Account Styles. You Will See How To Use Whm To Elegantly Manage Multiple Domains, Ssl Certificates, And Various Databases And Server-side Technologies Such As Php, Mysql, Perl, And Apache.

webhost Manager Is A Package Used By Web Hosts To Manage Their Servers And The Individual User Accounts They Hold. It Is Part Of The Same Package As Cpanel, So The Host Uses Webhost Manager While The Client Uses Cpanel. Webhost Manager Is At The Core Of Many Web Hosts' Business. Using Web Host Manager, You Can Keep Track Of The Accounts On Your Server, Monitor Their Bandwidth And Disk Space Usage, And Much More.

the Book Shows You How To:
- Set Up A Fast, Secure, And Effective Server With Whm
- Work With Apache, Php, Perl And Databases
- Manage Standard And Reseller Accounts And Use Third-party Programs That Assist In This Process
- Keep An Eye On What Is Happening On Your Server By Using Tools That Whm Provides And Some Third-party Tools
- Deal With Reseller And Non-reseller Accounts
- Manage Dns, Ip And Ssl Issues Using Whm
- Manage Security On An On-going Basis By Learning What To Look For
- Learn How To Add Useful Features To Whm And Cpanel
- Discover Places You Can Turn To For Help If You Need It

Annotation Many businesses want to run their email servers on Linux for greater control and flexibility of corporate communications, but getting started can be complicated. The attractiveness of a free-to-use and robust email service running on Linux can be undermined by the apparent technical challenges involved. Some of the complexity arises from the fact that an email server consists of several components that must be installed and configured separately, then integrated together. This book gives you just what you need to know to set up and maintain an email server. Unlike other approaches that deal with one component at a time, this book delivers a step-by-step approach across all the server components, leaving you with a complete working email server for your small business network. Starting with a discussion on why you should even consider hosting your own email server, the book covers setting up the mail server. We then move on to look at providing web access, so that users can access their email out of the office. After this we look at the features you'll want to add to improve email productivity: virus protection, spam detection, and automatic email processing. Finally we look at an essential maintenance task: backups. Written by professional Linux administrators, the book is aimed at technically confident users and new and part-time system administrators. The emphasis is on simple, practical and reliable guidance. Based entirely on free, Open Source software, this book will show you how to set up and manage your email server easily If you have web hosting requirements beyond the most basic, you should look for a host that offers cPanel. cPanel gives you tight control over every aspect of your web site, email accounts, and domain names. cPanel is the leading control panel for managing your hosted web account. Using cPanel, you can install popular web scripts, manage FTP and email accounts, control your site's security, and much more. But once you've got a web site with cPanel support, how do you go about using it? While the documentation included with cPanel may provide a quick reference, to really get the most from it you need a more detailed, systematic tutorial. Read this book to find out exactly how to get the most from cPanel in all aspects of your web site management: web, email, FTP, security, domains, back ups, and more. This is an easy to follow, practical guide with abundant screenshots along with clear instruction and explanation. It covers how to use cPanel, and also offers crucial advice on making the most of the application and avoiding common web master pitfalls. It is carefully arranged to act as a step-by-step tutorial and a handy desktop reference. The book is written for anybody who has a web hosting account that provides cPanel, and who wants to get the most from this very powerful tool 'This is a practical hands-on book with clear instructions and lot of code examples. It takes a simple approach, guiding you through different architectural topics using realistic sample projects. A single project is implemented using different architectural styles to make the reader understand the details of each style. There are also many small independent code samples to explain design patterns, WCF, and localization. This book is for people familiar with the ASP.NET framework using either C# or VB.NET. You don't need to be an ASP.NET guru – the book is ideal for novice and intermediate developers. If reading about application architecture usually confuses you or sends you to sleep, then this book will be perfect for you! In short, any ASP.NET programmer who is confused or disoriented reading different books or materials on architectures wondering how and what to implement in their application, will definitely benefit from this book!' 'WebHost Manager is a package used by web hosts to manage their servers and the individual user accounts they hold. It is part of the same package as cPanel, so the host uses WebHost Manager while the client uses cPanel. WebHost Manager is at the core of many web hosts'business. Using web host manager, you can keep track of the accounts on your server, monitor their bandwidth and disk space usage, and much more. This book shows you how to get the most from the software, for both you and your customers. It provides solutions to common WHM problems and pitfalls, leading to better customer service provided at lower cost. You will learn how to set up WHM securely, offer a variety of account styles. You will see how to use WHM to elegantly manage multiple domains, SSL certificates, and various databases and server-side technologies such as PHP, MySQL, Perl, and Apache'--Resource description page. If you are running a web host or web space reseller then the chances are you'll be using WebHost Manager. This book shows you how to get the most from the software, for both you and your customers. It provides solutions to common WHM problems and pitfalls, leading to better customer service provided at lower cost. An Administrator's Guide to WHM is designed for new server administrators and professionals who are new to working with WHM. Even if you've never had experience working with Linux servers before this book will walk you through every feature available so you'll be comfortable with WHM in no time. The book also provides tips and tricks that you will be using for years to come. Annotation If you are running a web host or web space reseller then the chances are you'll be using WebHost Manager. This book shows you how to get the most from the software, for both you and your customers. It provides solutions to common WHM problems and pitfalls, leading to better customer service provided at lower cost. You will learn how to set up WHM securely, offer a variety of account styles. You will see how to use WHM to elegantly manage multiple domains, SSL certificates, and various databases and server-side technologies such as PHP, MySQL, Perl, and Apache.

An easy to follow, practical guide with abundant screenshots along with clear instruction and explanation. Covers how to use cPanel, and also offers crucial advice on making the most of the application and avoiding common web master pitfalls. Carefully arranged to act as a step-by-step tutorial and a handy desktop reference Anybody who has a web hosting account that provides cPanel, and who wants to get the most from this very powerful tool.

WebHost Manager is a package used by web hosts to manage their servers and the individual user accounts they hold. This book shows you how to set up WHM securely; work with Apache, PHP, Perl and Databases; manage standard and reseller accounts and use third-party programs that assist in this process; and manage DNS, IP and SSL issues using WHM. Talks about cPanel, the leading control panel for managing hosted web account. This book helps to: learn how to find hosts that offer cPanel with their web hosting packages; discover how to access cPanel account; familiarize with the standard cPanel layout; and discover what the information on the main cPanel interface means and how to use it.