If you are a DevOps engineer, a Linux sysadmin, or even just a developer, you may have faced the annoying problem of managing versions in your development environment. Luckily, we now have a tool that can manage this for us out of the box, called ASDF. ASDF stands out for its ability to install multiple languages and development tools. It advantageously replaces the use of multiple language-specific version managers, such as NVM for Node.js or Pyenv for Python. This greatly simplifies the setup of the development environment, as you only need one tool to manage all your versions. ASDF allows ... Read More

The shell is the interface between the user and the system. It can be used to do anything you want on your system. In Linux, there are several types of shells that we can use and interact with. In this article, we will explain how to use and customize the shell environment a little bit and introduce some ideas of what you can do to make your shell environment more custom, depending on your needs. If you are new to Linux, you probably only know the bash shell, but it's not the only one we can use. There are other ... Read More

Kubernetes is a well-known container orchestration platform that allows you to manage containers from deployment to scaling and automation. It is also known as K8s as an abbreviation. For beginners, getting started with Kubernetes can be a bit confusing, as you need a server to start applying Kubernetes commands and learning more. For this, we have a tool called Minikube. What is Minikube? Minikube is a local Kubernetes tool developed by Google in 2016, and it is the most convenient way to start a Kubernetes cluster. It is easy to install and use, and it has almost all of Kubernetes' ... Read More

Bash script, like other programming languages, has features such as if statements, loops, and other useful constructs that make the language powerful and versatile. One of the most important concepts to understand when working with bash, or on the path to mastering bash scripting, is conditional statements. Conditional statements allow us to execute certain code or operations based on a given condition. In this tutorial, we will learn how to use if statements in bash scripts with examples and explanations. What is a Conditional Statement? In general, a conditional statement allows us to perform an action based on the value ... Read More

Vim is a well-known text editor in the terminal, used by many developers and sysadmins around the world. However, it is also known for its complicated keybindings and modes. You may want to use Vim, but for those reasons, or if you don't want to invest much time just to learn a text editor, we have the solution: Micro, an awesome and easy-to-use terminal text editor. Micro, as the name implies, is a lightweight and easy-to-install editor that comes with a lot of features and capabilities. In this article, we will go through how to install Micro and how to ... Read More

When we talk about applications that we take and run in the container world, we call this an image, which we save somewhere and run for as long as we need it. We have a lot of places where we can find an image; we call these image registries. We may have the image locally on our machine or in a specific place like the Internet (image repository or registry). Podman helps us deal with those registries. For example, we can search for a specific image in the image repository. If you search for an image for httpd, what you ... Read More

Podman is in the official repository for almost all distributions, making it easy to install. On Ubuntu / Debian / Mint. sudo apt install podman For Red Hat / Fedora sudo dnf install podman For Windows, it’s recommended to use WSL (Windows Subsystem for Linux) to install and use Podman. You can install Podman in WSL using the command: sudo apt install podman -y If you are a Mac user, the best option is to use Homebrew to install Podman. If you don’t have Homebrew installed, first install it with the command: /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)" ... Read More

These days, we hear a lot about the terms containers and VMs, and if you are a beginner, it's hard to differentiate between these terms and technologies that are similar and almost do the same work. In this comprehensive tutorial, we will explain in an easy way what a container is, what a container engine is, and finally, we will install and use Podman as a container technology to run our first container. What is a Container? To understand what a container is, basically let's take an example where we have an application that uses PHP version 8, for instance. ... Read More

There are many container management tools that are used to create, deploy, and scale containers. LXD and Docker are two of the tools which work efficiently so that the containers can be easily maintained and applications can be easily developed. In this article, we will discuss the difference between LXD and Docker. What is LXD? The full form of LXD is Linux Container Hypervisor. This is an open-source container management system which is used for Linux Containers. The developer of LXD is Canonical Ltd. LXD is also known as image-based platform as a large number of images are provided for ... Read More

David Korn developed the Korn Shell command which is used by developers to create new shell commands. Freeware Software developed Bash Shell which is a free and open-source script and can be used by computer users. In this article, we will discuss the difference between the Korn shell and the Bash shell. Korn Shell Korn shell is a command for Unix operating system and David Korn has developed it under Bell Labs. A shell program is a command which runs different types of scripts by interfacing with the operating system. Korn shell is a script that can run on different ... Read More