101 useful, customizable, and fun Linux, Mac OS X and UNIX shell scripts that you can use to solve common problems and personalize your computing environment. Includes an interactive calculator, a spell checker, a disk backup utility, a weather tracker, a web logfile analysis tool, and much more. The cookbook style examples are all written in Bourne Shell (sh) syntax.

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Each year, over 120,000 CPA exam candidates continue to attempt to pass the CPA exam. It is a stressful event in the life of an accountant, and the stress goes beyond just the knowledge and the exam itself because of the high percentage (85%), of first time students who fail. This book discusses what really happens at the CPA exam and how the candidate can better control the outcome. It provides the expert guidance on the techniques needed to pass today's CPA exam.

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The suite of utility applications that Unix users and administrators find indispensable–Telnet, rlogin, FTP, and the rest–can in fact prove to be the undoing of interconnected systems. The Secure Shell, a.k.a. SSH (which isn't a true shell at all) provides your otherwise attack-prone utilities with the protection they need. SSH: The Secure Shell: The Definitive Guide explains how to use SSH at all levels. In a blended sequence, the book explains what SSH is all about, how it fits into a larger security scheme, and how to employ it as an everyday user with an SSH client. More technically detailed chapters show how to configure a SSH server–several variants are covered–and how to integrate SSH with non-Unix client platforms.

As befits its detail- and variation-rich subject, this book comprises many specialized sections, each dealing with some specific aspect of use or configuration (setting up access control at the account level, for example, or generating keys for a particular SSH server). The writing is both informative and fun to read; the authors switch back and forth between text and entry-and-response listings from SSH machines. They often run through a half-dozen or more variants on the same command in a few pages, providing the reader with lots of practical information. The discussion of how SSH fits into a Kerberos Public Key Infrastructure (PKI) is great, as is the advice on defeating particular kinds of attacks.

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Build real-world, end-to-end network monitoring solutions with Nagios

This is the definitive guide to building low-cost, enterprise-strength monitoring infrastructures with Nagios, the world’s leading open source monitoring tool. Network monitoring specialist David Josephsen goes far beyond the basics, demonstrating how to use third-party tools and plug-ins to solve the specific problems in your unique environment. Josephsen introduces Nagios “from the ground up,” showing how to plan for success and leverage today’s most valuable monitoring best practices. Then, using practical examples, real directives, and working code, Josephsen presents detailed monitoring solutions for Windows, Unix, Linux, network equipment, and other platforms and devices. You’ll find thorough discussions of advanced topics, including the use of data visualization to solve complex monitoring problems. This is also the first Nagios book with comprehensive coverage of using Nagios Event Broker to transform and extend Nagios.

• Understand how Nagios works, in depth: the host and service paradigm, plug-ins, scheduling, and notification
• Configure Nagios successfully: config files, templates, timeperiods, contacts, hosts, services, escalations, dependencies, and more
• Streamline deployment with scripting templates, automated discovery, and Nagios GUI tools
• Use plug-ins and tools to systematically monitor the devices and platforms you need to monitor, the way you need to monitor them
• Establish front-ends, visual dashboards, and management interfaces with MRTG and RRDTool
• Build new C-based Nagios Event Broker (NEB) modules, one step at a time
• Contains easy-to-understand code listings in Unix shell, C, and Perl

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Follow a clear path through the power and complexity of TYPO3 to get started, and build your own TYPO3 website This book is a fast paced tutorial to creating a website using TYPO3. If you have never used TYPO3, or even any web content management system before, then you need not look further than this book as it walks you through each step to create your own TYPO3 site. From installation, to initial set up and content entry and on to customization and adding plug-ins, this book will get you a stable and working TYPO3 based website fast. The book has 8 chapters, each dealing with a different aspect of TYPO3 and by the end you can genuinely claim to have tamed the beast that is TYPO3. TYPO3 is a popular, free, feature-rich open source content management system. It has the flexibility and scalability to more than match commercial systems and allow you to build a powerful and complex website. Because of its complex system and numerous extensions, TYPO3 can be daunting on first approach and the initial learning curve can be steep. However the nature of its advanced features will reward an extra investment in learning. Written in a clear, easy-to-read style, the book provides a tutorial for setting up a TYPO3 website. Each topic is tackled in a practical way with many examples and tasks to develop your skills. This book is aimed at anyone who would like to quickly build a TYPO3 website. This book is written for first-time users of TYPO3 and has been specifically created so that you do not require detailed knowledge of programming or web development.

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Gain the skills and knowledge needed to create effective data security systems

This book updates readers with all the tools, techniques, and concepts needed to understand and implement data security systems. It presents a wide range of topics for a thorough understanding of the factors that affect the efficiency of secrecy, authentication, and digital signature schema. Most importantly, readers gain hands-on experience in cryptanalysis and learn how to create effective cryptographic systems.

The author contributed to the design and analysis of the Data Encryption Standard (DES), a widely used symmetric-key encryption algorithm. His recommendations are based on firsthand experience of what does and does not work.

Thorough in its coverage, the book starts with a discussion of the history of cryptography, including a description of the basic encryption systems and many of the cipher systems used in the twentieth century. The author then discusses the theory of symmetric- and public-key cryptography. Readers not only discover what cryptography can do to protect sensitive data, but also learn the practical limitations of the technology. The book ends with two chapters that explore a wide range of cryptography applications.

Three basic types of chapters are featured to facilitate learning:

• Chapters that develop technical skills
• Chapters that describe a cryptosystem and present a method of analysis
• Chapters that describe a cryptosystem, present a method of analysis, and provide problems to test your grasp of the material and your ability to implement practical solutions

With consumers becoming increasingly wary of identity theft and companies struggling to develop safe, secure systems, this book is essential reading for professionals in e-commerce and information technology. Written by a professor who teaches cryptography, it is also ideal for students.

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In Atomic the authors' revolutionary theory is put to the test. Looking across all sectors of business, including retail banking, financial services, telecommunications, IT and consultancy, carbon-based corporations (oil and gas companies), and consumer products companies, Camrass and Farncombe discover some real eye-openers, including how truly more efficient these industries become by a change in corporate structure.

The implications for individuals are equally profound and far-reaching. It might take a decade, but it will happen, and nothing will be the same again. Welcome to the Atomic Corporation.

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