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Bash Cookbook

Bash Cookbook

By : Brash, Ganesh Sanjiv Naik
1 (1)
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Bash Cookbook

Bash Cookbook

1 (1)
By: Brash, Ganesh Sanjiv Naik

Overview of this book

In Linux, one of the most commonly used and most powerful tools is the Bash shell. With its collection of engaging recipes, Bash Cookbook takes you through a series of exercises designed to teach you how to effectively use the Bash shell in order to create and execute your own scripts. The book starts by introducing you to the basics of using the Bash shell, also teaching you the fundamentals of generating any input from a command. With the help of a number of exercises, you will get to grips with the automation of daily tasks for sysadmins and power users. Once you have a hands-on understanding of the subject, you will move on to exploring more advanced projects that can solve real-world problems comprehensively on a Linux system. In addition to this, you will discover projects such as creating an application with a menu, beginning scripts on startup, parsing and displaying human-readable information, and executing remote commands with authentication using self-generated Secure Shell (SSH) keys. By the end of this book, you will have gained significant experience of solving real-world problems, from automating routine tasks to managing your systems and creating your own scripts.
Table of Contents (10 chapters)
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Creating simple frontend GUIs for Bash scripts


In this recipe, we are going to create a simple GUI. We are going to use the zenity tool to do so.

 

Getting ready

Besides having a terminal open, make sure you have zenity installed in your system.

How to do it...

Zenity is used to add a graphical interface to shell scripts using a single command. Zenity comes by default with Ubuntu. If not, then install it as follows:

$ sudo apt install zenity

First, we will catch a yes/no response in our shell script and then perform different commands based on the button. Run the following command to get the yes/no response.

$ zenity --question --title="Query" --text="Would you like to run the script?"

Run the following command to get the error message box:

$ zenity --error --title="An Error Occurred" --text="A problem occurred while running the shell script."

Run the following command to get the text entry:

$ zenity --entry --title="Favorite Website" --text="What is your favorite website?"

Now we will create a script...

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