Professional Information Technology-Programming Book part 121 pdf

Regular expressions are not an application—you can't just click an icon and use them. Rather, they require that you write regular expression code or use an application with regular expression support built in. And so, to assist readers in their quest for regular expression mastery, a simple Web-based application has been created that can be used to test and experiment with regular expressions using a Web browser. The application itself is a single page, containing a self-posting HTML form and all regular expression processing. As such, it can be used as is; just drop the file on your computer and you'll be good to go. Multiple versions of the application are available, including versions for Microsoft ASP and ASP.NET and Macromedia ColdFusion (both of which will require access to the appropriate server software) and a client-only JavaScript version. Tip Using multiple versions is a good way to test pattern compatibility. Note The intent is to provide additional versions for other platforms as needed or requested. To obtain a copy, or to see the available versions, visit the URL referenced at the end of this appendix. Performing Find Operations The application supports both find and replace operations. To perform a find search, follow these steps: 1. Load the application page in your browser. 2. Check the Find option button. 3. Enter the regular expression into the top field. 4. Check the Case Sensitive check box, if needed. 5. Type (or paste) the text to search for into the large text box. 6. Click the Match Now button. Results will be displayed in a tabular form below the form. Performing Replace Operations Replace operations require that two patterns be specified. To perform a replace operation, follow these steps: 1. Load the application page in your browser. 2. Check the Replace option button. 3. Enter the search regular expression into the top field. 4. Enter the replace regular expression into the second field. 5. Check the Case Sensitive check box, if needed. 6. Type (or paste) the text to search for into the large text box. 7. Click the Match Now button. The modified string (with replacements made) will be displayed below the form. Obtaining a Copy of the Application To obtain a copy of the application, visit the book's Web page at http://www.forta.com/books/0672325667/ Page contents include the following:  Download any of the available versions.  Test expressions using online versions of the applications.  Find links to other regular expression resources.  An errata (if one should be needed).  And if you'd like to contribute a ported version of the application, you'll find contact information there, too. Enjoy! The OpenBSD 4.0 Crash Course By Jem Matzan Publisher: O'Reilly Pub Date: January 01, 2007 ISBN-10: 0 - 596 - 51015 - 2 ISBN-13: 978 - 0 - 596 - 51015 - 2 Pages: 64 Table of Contents OpenBSD is a Unix-like computer operating system that is widely regarded for its excellent documentation and its fanatical focus on security. "The OpenBSD Crash Course" Short Cut will help you get an x86 or AMD64/EM64T server, desktop, or network appliance up and running quickly with OpenBSD. You'll learn how to install or upgrade OpenBSD on x86 and AMD64 machines, how to configure it for server or workstation use, and how to properly maintain it until the next release. The OpenBSD 4.0 Crash Course By Jem Matzan Publisher: O'Reilly Pub Date: January 01, 2007 ISBN-10: 0 - 596 - 51015 - 2 ISBN-13: 978 - 0 - 596 - 51015 - 2 Pages: 64 Table of Contents Copyright Chapter 1. Learn OpenBSD Quickly Chapter 2. Understanding OpenBSD 4.0 Section 2.1. What Is OpenBSD? Section 2.2. What Is OpenBSD Good For? Section 2.3. Supported Architectures and Hardware Chapter 3. Installing OpenBSD 4.0 Section 3.1. Installation Methods Section 3.2. Booting from the Installation Disc Section 3.3. Installation Walkthrough Chapter 4. Upgrading from OpenBSD 3.9 Section 4.1. Upgrading the Base System and Package Sets Section 4.2. Post-Installation Upgrading Chapter 5. Post-Install Configuration Section 5.1. First Boot in OpenBSD 4.0 Section 5.2. Creating User Accounts Section 5.3. A Quick Introduction to the vi Editor Section 5.4. Customizing the Terminal Section 5.5. CD/DVD Mounting Made Easy Section 5.6. Installing the Ports Tree and the Base System Source Code Section 5.7. Using the OpenBSD Package Tools Section 5.8. Custom Kernel Configurations Section 5.9. Enabling Binary Compatibility with Other OSes Section 5.10. Shutting Down and Restarting the Computer Chapter 6. OpenBSD as a Desktop Operating System Section 6.1. Configuring X.org Section 6.2. Installing a Desktop Environment or Window Manager Section 6.3. Starting X.org Section 6.4. Finding and Installing Desktop-Oriented Programs Section 6.5. Font Configuration Chapter 7. Server Installation and Service Configuration Section 7.1. The inetd Internet Super-Server Section 7.2. Apache Section 7.3. Databases Section 7.4. Mail Transfer Agents Section 7.5. Mail Delivery Agents Section 7.6. OpenLDAP Section 7.7. NFS Section 7.8. NIS Section 7.9. BIND Section 7.10. CARP Section 7.11. Basic Packet Filter Setup Section 7.12. Enabling and Configuring OpenNTPD Chapter 8. Installing the Languages of the Web Section 8.1. Java Section 8.2. PHP Section 8.3. Perl Section 8.4. Ruby Section 8.5. Python Chapter 9. Automation and Reporting Section 9.1. The Cron Daemon Section 9.2. Insecurity Reports Section 9.3. Syslog Chapter 10. Keeping OpenBSD Up-to-Date Section 10.1. Staying Up-to-Date with Ports and Packages Section 10.2. Switching to the OpenBSD 4.0-STABLE Branch Section 10.3. Switching to OpenBSD-CURRENT Chapter 11. Where to Go for Help Section 11.1. Commercial Support for OpenBSD Section 11.2. Further Reading Copyright Copyright © 2007, O'Reilly Media, Inc All rights reserved. Chapter 1. Learn OpenBSD Quickly OpenBSD has some of the industry's finest integrated documentation, but it can take a long time to figure out which packages you need to get certain services running, and how to configure them once installed. If you are totally new to Unix- like operating environments, this guide could be a little over your head in some places, but if you read it from start to finish and stick with it when things get difficult, you'll end up with a functional and useful operating system. If you already have some experience with any Unix-like operating system, you'll probably feel right at home with OpenBSD and may want to skip ahead to the sections that apply to you. While there are some suggestions and system administration tips sprinkled throughout "The OpenBSD Crash Course," it is not designed to teach you how to administer a server. It's impossible to anticipate each reader's hardware configuration and goals for working with OpenBSD, so instead of telling you how to set up your machine to perform specific tasks, this guide will show you how to install and configure various services and programs. This Short Cut is organized into two sections: desktop and server. From those two starting points, you can customize OpenBSD to meet nearly any need. If you're new to OpenBSD, start at the beginning and skip ahead when you hit a section that isn't relevant to what you need to do. If you just want to get a system up and running quickly, skip ahead to the sections that apply to your situation. Chapter 2. Understanding OpenBSD 4.0 This section will briefly introduce you to OpenBSD and its capabilities and ideal uses. . Copy of the Application To obtain a copy of the application, visit the book& apos;s Web page at http://www.forta.com/books/0672325667/ Page contents include the following:  Download any of. if you'd like to contribute a ported version of the application, you'll find contact information there, too. Enjoy! The OpenBSD 4.0 Crash Course By Jem Matzan Publisher: