This is an example of a Bash shell script used to loop through a list to compare to text strings found in logs. The script is used to detect and block attacks on a web site.

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.

By and large, most Red Hat Linux systems will have Bash as the default shell. Bash is a darn great shell, but this article is about another equally great shell, called Z-Shell, that has most of the attributes of Bash, but in some cases goes the extra mile to give you the flexibility to customize your shell more than Bash allows.

Bash Shell scripting...every Linux admin needs it to save time. One aspect of shell scripting is writing functions. Creating functions in your scripts allows you to create containers of code that you can reuse in one script or multiple scripts. This tutorial, with examples, shows you how to create functions. The article is a part of a free shell scripting course.

The awk utility provides a powerful way to search for text strings using regex. This great tool will help you solve many Bash shell script needs.

The positions of variables in a Bash Shell script may be used by the script as a reference. These built-in parameters are useful methods for building scripts.

The Bash Debugger Project (bashdb) lets you set breakpoints, inspect variables, perform a backtrace, and step through a bash script line by line. In other words, it provides the features you expect in a C/C++ debugger to anyone programming a bash script.

The Bash Shell reads command line until it reaches a carriage-return. This permits the user to create very long command strings if necessary.

A simple Bash script to parse Google's PR checksum and return any pages rank from the command line!