In this article of the shell scripting tutorial series, we’ll learn how to create and use variables in shell scripts. We’ll walk through the different variables that we can make use of that are provided by the system for the Bourne Shell and how to create custom variables to use throughout a shell script. Variables
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In the previous shell scripting tutorial, we worked with simple variables in shell scripts. Today we’ll cover arrays in shell scripts, and how we can create and make use of arrays within our scripts. To declare or create arrays on the fly, we will use the declare command (more explicit) or directly write array_name=(element1 element2
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With a boom in back-end web development technologies, working with the right framework can make or break your web development efforts. Python Flask is one of the many good frameworks out there. Flask is a popular Python web framework that enables the rapid development of web applications. Since most developers prefer working in Linux as
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In our previous tutorial, we learned the use of the while loop in shell scripts. Now, let’s make use of the break and continue statement in Linux and manipulate the flow of loops. As we know, a loop will end if the condition supplied to it becomes FALSE. But what if you’re running a loop
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The tail command in Linux displays the last few lines/blocks of any file, the number of lines/blocks being dependent on the options passed when using the command. Also read: The uptime Command in Linux The Linux tail command default output When no options are provided, the tail command prints the last 10 lines for all
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After learning the basics in our previous tutorials about if-else statements, switch-case statements, etc, it’s time to create functions in shell scripts. Functions help us divide scripts into different sections and make the code more portable as well as reusable. Defining Functions in Shell Scripts The basic syntax for defining a function is just the
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With the introduction of Ubuntu 16.04 LTS, the “apt” command started being noticed by bloggers and average Linux users. Every Ubuntu-based tutorial that popped up on the internet used apt install instead of what we were normally used to seeing, i.e. apt-get install. Let’s see what exactly the apt command is, and why a new
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Continuing our series, in today’s article, we’ll go over the until loop in shell scripts. We’ve already covered for loops and while loops in shell scripts in our previous tutorials. You’ll find a lot of similarities in the while and until loop so we’ll also look at the differences between both the loops in this
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We recently learned about the cat and the more commands in Linux. In this tutorial, we’ll be covering the head command which is pretty similar to the cat command in the essence that it helps you list down the contents of a file in the terminal. The head command has very few options, making this
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We talked about the while, for, and until loops in shell scripts in the past few tutorials now. Let’s learn the select loop in shell scripts, a very interesting and unique loop in bash. Why is it interesting or unique? Let’s find out in this tutorial today. What is the select loop in Shell Scripts?
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