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grep Pocket Reference is the first guide devoted to grep, the powerful Unix content-location utility. This handy book is ideal for system administrators, security professionals, developers, and others who want to learn more about grep and take new approaches with it -- for everything from mail filtering and system log management to malware analysis. With grep Pocket Reference, you will:Learn methods for filtering large files for specific contentAcquire information not included in the current grep documentationGet several tricks for using variants such as egrepKeep key information about grep right at your fingertipsFind the answers you need about grep quickly and easily. If you're familiar with this utility, grep Pocket Reference will help you refresh your basic knowledge, understand rare situations, and work more efficiently. If you're new to grep, this book is the best way to get started.

Regular expressions are such a powerful tool for manipulating text and data that anyone who uses a computer can benefit from them. Composed of a mixture of symbols and text, regular expressions can be an outlet for creativity, for brilliant programming, and for the elegant solution. While a command of regular expressions is an invaluable skill, all there is to know about them fills a very large volume, and you don't always have time to thumb through hundreds of pages each time a question arises. The answer is the Regular Expression Pocket Reference. Concise and easy-to-use, this little book is the portable companion to Mastering Regular Expressions. This handy guide offers programmers a complete overview of the syntax and semantics of regular expressions that are at the heart of every text-processing application. Ideal as an introduction for beginners and a quick reference for advanced programmers, Regular Expression Pocket Reference is a comprehensive guide to regular expression APIs for C, Perl, PHP,Java, .NET, Python, vi, and the POSIX regular expression libraries. O'Reilly's Pocket References have become a favorite among programmers everywhere. By providing a wealth of important details in a concise, well-organized format, these handy books deliver just what you need to complete the task at hand. When you've reached a sticking point and need to get to a solution quickly, the new Regular Expression Pocket Reference is the book you'll want to have.

Updated for both Python 3.4 and 2.7, this convenient pocket guide is the perfect on-the-job quick reference. Youll find concise, need-to-know information on Python types and statements, special method names, built-in functions and exceptions, commonly used standard library modules, and other prominent Python tools. The handy index lets you pinpoint exactly what you need.Written by Mark Lutzwidely recognized as the worlds leading Python trainerPython Pocket Reference is an ideal companion to OReillys classic Python tutorials, Learning Python and Programming Python, also written by Mark.This fifth edition covers:Built-in object types, including numbers, lists, dictionaries, and moreStatements and syntax for creating and processing objectsFunctions and modules for structuring and reusing codePythons object-oriented programming toolsBuilt-in functions, exceptions, and attributesSpecial operator overloading methodsWidely used standard library modules and extensionsCommand-line options and development toolsPython idioms and hintsThe Python SQL Database API

Few .NET developers have the luxury of unlimited code testing once their application is complete, and rushing through the testing process is both problematic and stressful. The open source NUnit framework provides an excellent and efficient way to test and improve .NET code as it's written, saving hundreds of QA hours and headaches.NUnit is one of the most mature and widely-used .NET open source projects even Microsoft uses it internally. NUnit is a unit-testing framework for all .Net languages. Written entirely in C#, NUnit takes advantage of many .NET language features, such as custom attributes and other reflection related capabilities. It automates unit testing and reduces the effort required to frequently test code while developing it. NUint is invaluable for .NET developers in test-driven development under agile methodologies such as Extreme Programming (XP) as well as for developers who use for unit testing for software quality assurance. Unfortunately, some of those valuable hours saved by using NUnit can be wasted trying to master this powerful but under-documented frameworkProof that good things come in small packages, the NUnit Pocket Reference is a complete reference to NUnit, filling in the blanks left by the existing documentation and online discussion. It offers developers everything they need to know to install, configure, and use NUnit; the NUnit user interface; and a reference to the NUnit framework classes in a slim but well-organized package. This handy little book even offers practical, real world NUnit examples. And with the NUnit Pocket Reference, IT managers will know to expect when they implement unit testing in their projects. It is the only book you'll need on this popular and practical new open source framework.

Firewalls, Network Address Translation (NAT), network logging and accounting are all provided by Linux's Netfilter system, also known by the name of the command used to administer it, iptables. The iptables interface is the most sophisticated ever offered onLinux and makes Linux an extremely flexible system for any kind of network filtering you might do. Large sets of filtering rules can be grouped in ways that makes it easy to test them and turn them on and off.Do you watch for all types of ICMP traffic--some of them quite dangerous? Can you take advantage of stateful filtering to simplify the management of TCP connections? Would you like to track how much traffic of various types you get?This pocket reference will help you at those critical moments when someone asks you to open or close a port in a hurry, either to enable some important traffic or to block an attack. The book will keep the subtle syntax straight and help you remember all the values you have to enter in order to be as secure as possible. The book has an introductory section that describes applications,followed by a reference/encyclopaedic section with all the matches and targets arranged alphabetically.

The HyperText Transfer Protocol, or HTTP, is the backbone of the World Wide Web. HTTP is the language that each web browser (or other web client) uses to communicate with servers around the world. All web programmers, administrators, and application developers need to be familiar with HTTP in order to work effectively.The HTTP Pocket Reference not only provides a solid conceptual foundation of HTTP, it also serves as a quick reference to each of the headers and status codes that comprise an HTTP transaction. The book starts with a tutorial of HTTP, but then explains the client request and server responses in more detail, and gives a thorough technical explanation of more advanced features of HTTP (such as persistent connections and caching).Most people use the Web every day without knowing anything about HTTP, but for those who need to get "e;beyond the browser,"e; this book is the place to start.

Many Linux and Unix developers are familiar with the GNU debugger (GBD), the invaluable open source tool for testing, fixing, and retesting software. And since GDB can be ported to Windows, Microsoft developers and others who use this platform can also take advantage of this amazing free software that allows you to see exactly what's going on inside of a program as it's executing. This new pocket guide gives you a convenient quick reference for using the debugger with several different programming languages, including C, C++, Java, Fortran and Assembly.The GNU debugger is the most useful tool during the testing phase of the software development cycle because it helps you catch bugs in the act. You can see what a program was doing at the moment it crashed, and then readily pinpoint and correct problem code. With the GDB Pocket Reference on hand, the process is quick and painless. The book covers the essentials of using GBD is a testing environment, including how to specify a target for debugging and how to make a program stop on specified conditions.This handy guide also provides details on using the debugger to examine the stack, source files and data to find the cause of program failure-and then explains ways to use GBD to make quick changes to the program for further testing and debugging.The ability to spot a bug in real time with GDB can save you hours of frustration, and having a quick way to refer to GBD's essential functions is key to making the process work. Once you get your hands on the GDB Pocket Reference, you'll never let go!

Even film diehards have a tough time resisting the instant gratification of the digital camera. Today's digital cameras are more affordable then ever before, and they deliver high quality images that are a snap to share. Plus, you can take risks with a digital camera you never would with a film camera. You waste nothing; there's no film required, and because you only print the pictures you need, digital photography is cost effective and environmentally friendly.But to take full advantage of a digital camera, you need to be an experienced photographer and an expert at digital photography too. With more than 15 years of experience as a photojournalist, author Derrick Story brings you Digital Photography Pocket Guide, 3rd Edition. For everyone who owns or will own a digital camera (and that pretty much means everyone!), this is the perfect on-the-go guide for taking top-notch digital photos.In this third edition of the bestselling pocket guide, Story expands on the basic photography techniques that he introduced in earlier editions, including an explanation of each camera component and what it does, tips for choosing just the right settings for your needs, and much more. This indispensable guide covers everything from how to shoot sports action, close ups, and night shots, to dealing with image resolution, archiving, and memory cards.Affordable and portable, Digital Photography Pocket Guide, 3rd Edition offers full-color photographs, screen shots, and line art illustrating all the topics in the guide's three main sections ("e;Digital Camera Components,"e; "e;Standard Camera Functions,"e; and "e;How Do I?"e;). Contents are labeled A to Z for quick reference. There's also a comprehensive table of contents and index so you'll waste no time flipping to the specific information you need--whether you want to transfer images, make a QuickTime movie, or just figure out what purpose that mystery setting on your camera serves. There's even a section of easy-to-read reference tables for quick look-up of white balance settings, exposure compensation, camera mode explanations, and plenty more.

The STL Pocket Reference describes the functions, classes, and templates in that part of the C++ standard library often referred to as the Standard Template Library (STL). The STL encompasses containers, iterators, algorithms, and function objects, which collectively represent one of the most important and widely used subsets of standard library functionality.The C++ standard library, even the subset known as the STL, is vast. It's next to impossible to work with the STL without some sort of reference at your side to remind you of template parameters, function invocations, return types--indeed, the entire myriad of details you need to know in order to use the STL effectively and get work done. You need a memory-aid.Books that cover the standard library and the STL tend to be quite heavy and large, describing each aspect of the STL in detail. Such books are great when you're not familiar with the library, but get in the way when you simply need to remind yourself of a function name, or the order in which you pass arguments to a function. Programmers familiar with the STL need a small, lightweight memory-aid. That's what the STL Pocket Reference is. It's small, lightweight, and chock-full of information that you can take in at a glance, so you can get on with your work.

XSLT is an essential tool for converting XML into other kinds of documents: HTML, PDF file, and many others. It's a critical technology for XML-based platforms such as Microsoft .NET, Sun Microsystems' Sun One, as well as for most web browsers and authoring tools. As useful as XSLT is, however, most people have a difficult time getting used to its peculiar characteristics. The ability to use advanced techniques depends on a clear and exact understanding of how XSLT templates work and interact.The XSLT 1.0 Pocket Reference from O'Reilly wants to make sure you achieve that level of understanding. With its concise approach, this handy pocket guide quickly gets you up to speed on XSLT 1.0 so you can covert XML like a seasoned pro. In addition to covering the basics of stylesheet structure, it also explains how to:use template rulescreate a result treeapply conditional processingtransform multiple source documentsemploy number formattingThanks to their convenient, quick-reference format, O'Reilly's Pocket References spare you from having to hunt through larger books for answers. They deliver just what you need to get the job done in a timely fashion. And the XSLT 1.0 Pocket Reference is no different--it's the ideal companion to have at your desk when you need an answer fast.