The touch command in Linux is used to update timestamps on files, namely, the access and modification time for any file(s). This is basically ‘touching’ the file, and hence the name of the command. This command has different options through which we could modify certain timestamps for the files provided as arguments. 1. Using touch […]
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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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The Debian repository already has a VirtualBox package for us to directly install on our systems. But it’s a version older than the latest official release. As of this writing, the version available in the apt sources is 5.2, while the latest one is version 6.1. So let’s see how we can go about installing
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The cat and the more commands are used to display the contents of a file or files on the terminal in Linux. Both commands have similar functionality but are still different. How are they similar as well as different at the same time? Let’s find that out now. 1. The cat command Short for concatenate,
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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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If you’re on a newer version of Debian or pretty much any other Linux distribution, you will already have Python installed in your system. But maybe you don’t have the latest one. Let’s start by checking which version is installed, and how to get the latest one if you don’t already have it installed in
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The mv command in Linux allows you to move a file from one location to another. Also, we don’t really have a rename command in Linux. Instead, we move files from one name to another. This is facilitated by the “mv” command which stands for move. For basic usage, you will find it very straightforward
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In the previous shell scripting 101s, we covered arrays and variables in shell scripts for Unix and Linux environments. In this tutorial, we’ll cover the while loop in shell script. A while loop in shell scripts is used to repeat instructions multiple times until the condition for the loop stays true. Loops have a lot of
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Installing the GCC compiler is a very easy task on Debian. The APT package manager and the APT repository has everything ready for you. Let’s look at how we can install GCC on our Debian systems in a quick and easy way. What Languages Can GCC Compiler Compile? GCC compiler or the GNU C compiler,
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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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