An Introduction to XML provides students and entry-level professionals with demonstrations of the basics of learning XML, covering topics such as Web 2.0, AJAX, RSS, Web Services and managing XML data. These short Web-based video modules provide clear examples of XML as well as references to popular Web sites that use XML.

The Bash Shell provides the ability to create symbolic names which the shell stores in memory and which can be assigned values so that it can be used repeatedly in a shell script.

"This tutorial an elementary introduction to teach non-programmers how to customize their work environment; it can also be used as an introduction to programming basics. It includes numerous exercises and sample programs; the author also walks you through the actual source code of several GNU Emacs commands. A handy reference appendix is included..."

The shell, basic commands and concepts, shell built ins, and directory structures.

The awk utility provides a powerful tool for searching patterns and printing them in the desired format. This is an introduction to awk with examples.

Get an introduction to the Bash shell, which you can use on nearly any UNIX®-based operating system. Bash is a mature, powerful, yet easy-to-use shell that is freely available.

The Red Hat Cluster Suite is a framework to bind two or more machines together to jointly handle one task. The following article gives an introduction to RHCS in terms of service failover.

Screen is one of those tools you can’t live without once you know about it. In this guide we check out some of the most common uses of screen and give you an introduction to this wonderful utility.

Shell is a program, which interprets user commands. The commands are either directly entered by the user or read from a file called the shell script.