This isn't about a shell script, it's about a really cool technique to apply in shell scripts. Have you ever been worried about multiple instances of a shell script running because they might overwrite or corrupt the data or devices they are working on? Here's a way to prevent that.

The first time I played with Zenity, I recognized several potential uses for it. While I'm pretty comfortable with interacting with computers with a command line interface, I know many people are not. Zenity creates GUI widgets from a simple command line and can be used from any shell script.

In the first part of this piece I introduced zenity : the handy tool for providing GUI interaction with your shell scripts. In this second part I'm going to delve a little deeper into the type of things you can do with this versatile tool.

Paul Ferrill shows how adding a graphical user interface (GUI) component to any utility script can make it more user friendly, and introduces us to an excellent tool for doing this---Zenity.

Here is a simple shell script that generates a list of process running on a GNU/Linux system containing the process' PID, name and path. The script is straight forward and one can easily modify it according to their needs.

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.

Well, I can't create a casino as a shell script, and I certainly can't create either a secret agent or a gorgeous female sidekick, but I can create a Baccarat game as a shell script. Heck, it's probably the first time anyone's even attempted it!

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.

This post is the first in a series on shell script debugging, error handling, and security. Although I’ll be presenting some methodologies and techniques that apply to all shell languages (and most programming languages), this series will focus very heavily on BASH.