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Git is the world’s most popular distributed version control system used by many open-source and commercial projects. It allows you to collaborate on projects with your fellow developers, keep track of your code changes, revert to previous stages, create branches, and more.

Pip is a tool for installing Python packages. With pip, you can search, download, and install packages from Python Package Index (PyPI) and other package indexes.

This tutorial describes how to install Ubuntu on a Raspberry Pi. Ubuntu is the most popular Linux distribution that can run on all kinds of hardware, from high-end computers to small devices such as Raspberry Pi.

Ubuntu 20.04 LTS (Focal Fossa) was released on April 23, 2020, and it will be supported for five years. It comes with a lot of new packages and major software upgrades, including the latest versions of OpenJDK, GCC, Python, Ruby, and PHP. This tutorial explains how to upgrade to Ubuntu 20.04 LTS from Ubuntu 18.04 or Ubuntu 19.10.

Java is one of the most popular programming languages used to build different kinds of applications and systems. Java runs on all major operating systems and devices. You can find applications developed in Java on your laptop, phone, and game console. In this guide, we will describe how to install Java on Ubuntu 20.04.

This article explains how to install the Google Chrome web browser on Ubuntu 20.04.

Secure Shell (SSH) is a cryptographic network protocol designed for a secure connection between a client and a server. The two most popular SSH authentication mechanisms are password-based authentication and public-key based authentication. Using SSH keys is generally more secure and convenient than traditional password authentication. This article describes how to generate SSH keys on CentOS 8 systems. We’ll also show you how to set up an SSH key-based authentication and connect to remote Linux servers without entering a password.

VirtualBox is open-source, cross-platform virtualization software that allows you to run multiple guest operating systems (virtual machines) simultaneously. VirtualBox provides a set of drivers and applications (VirtualBox Guest Additions) that can be installed in the guest operating system that extends the guest’s functionality such as shared folders, shared clipboard, mouse pointer integration, better video support, and more. This article explains how to install VirtualBox Guest Additions on CentOS 8 guests.

KVM(Kernel-based Virtual Machine) is an open-source virtualization technology built into the Linux kernel. It allows you to run multiple isolated guest virtual machines based on Linux or Windows. Each guest has its own operating system and dedicated virtual hardware such as CPU(s), memory, network interfaces and storage. This guide explains how to install and configure KVM on Ubuntu 18.04 desktop.

WireGuard is a modern VPN (Virtual Private Network) technology with state-of-the-art cryptography. Compared to other similar solutions, such as IPsec and OpenVPN, WireGuard is faster, easier to configure, and more performant. It is a cross-platform and can run almost anywhere, including Linux, Windows, Android, and macOS. Wireguard is a peer-to-peer VPN; it does not use the client-server model. Depending on its configuration, a peer can act as a traditional server or client.

WireGuard works by creating a network interface on each peer device that acts as a tunnel. Peers authenticate each other by exchanging and validating public keys, mimicking the SSH model. Public keys are mapped with a list of IP addresses that are allowed in the tunnel. The VPN traffic is encapsulated in UDP.

TeamViewer is a cross-platform application that can be used for remote control, desktop sharing, online meetings, and file transfer between computers. This tutorial explains how to install TeamViewer on Debian 10, Buster.

In this series, we'll cover how to install a LEMP stack on Debian 10. We will show you how to install Nginx, generate a free Let's Encrypt SSL certificate, install, and secure MariaDB, and install PHP.

Awk is a general-purpose scripting language designed for advanced text processing. It is mostly used as a reporting and analysis tool. Unlike most other programming languages that are procedural, awk is data-driven, which means that you define a set of actions to be performed against the input text. It takes the input data, transforms it, and sends the result to standard output. This article covers the essentials of the awk programming language. Knowing the basics of awk will greatly improve your ability to manipulate text files on the command line.

Memcached is a free and open-source high-performance in-memory key-value data store. Typically, it used as a caching system to speed up applications by caching various objects from the results of database calls. This article shows how to install and configure Memcached on CentOS 8.

UFW (Uncomplicated Firewall) is a user-friendly front-end for managing iptables firewall rules. Its main goal is to make managing iptables easier or as the name says uncomplicated. This article describes how to set up a firewall with UFW on Debian 10.

Visual Studio Code is a free and open-source cross-platform code editor developed by Microsoft. It has built-in debugging support, embedded Git control, syntax highlighting, code completion, integrated terminal, code refactoring, and snippets. Visual Studio Code functionality can be extended using extensions. This tutorial describes how to install Visual Studio Code editor on Debian 10, Buster.

One of the first tasks when provisioning a new Linux server is adding and removing users. Each user can have different permission levels and specific settings for various command-line and GUI applications. This article explains how to add and remove users on CentOS 8 system

Mono is a platform for developing and running cross-platform applications based on the ECMA/ISO Standards. It is a free and open-source implementation of Microsoft’s .NET framework. This article provides information on how to install Mono on Debian 10.

In this tutorial, we will explain how to install Skype on Debian 10. Skype is one of the most popular communication applications in the world.

Gradle is a powerful and flexible build tool used primarily for Java projects, combining the best features of Ant and Maven. Unlike its predecessors, which use XML for scripting, Gradle uses Groovy, a dynamic, object-oriented programming language for the Java platform to define the project and build scripts. This article explains how to install Gradle on CentOS 8. We’ll download the latest release of Gradle from their official website.