Etherpad is a web application that enables real-time collaborative text editing in the browser. It is written in Node.js and can use a variety of database engines to store data. In this tutorial we will install Etherp...

Accurate timekeeping is integral to modern software deployments. Without it, you may encounter data corruption, errors, and other issues that are difficult to debug. In this article, you will practice some general tim...

In this tutorial, we will install the MySQL official apt software repository, then install the MySQL software itself, secure the installation, and finish up with testing that MySQL is running and responding to commands.

In this tutorial we will download and install Deno on Ubuntu 20.04, and run a hello world statement to test out our installation. Deno is a new JavaScript runtime being developed by the creator of Node.js, with a focu...

Yarn is a package manager for Node.js that focuses on speed, security, and consistency. In this tutorial you will install Yarn globally, add Yarn to a specific project, and learn some basic Yarn commands.

In this guide, we will show you three different ways of getting Node.js installed on an Ubuntu 20.04 server: using apt to install the nodejs package from Ubuntu's default software repository, using apt with an alterna...

When you first create a new Ubuntu 20.04 server, you should perform some important configuration steps as part of the basic setup. These steps will increase the security and usability of your server, and will give you...

When you share links on social media platforms, they'll often be presented with rich imagery and a nicely formatted title, summary, and link, instead of plain text. You can add these rich media social sharing capabili...

When developing or deploying containers you'll often need to look inside a running container to inspect its current state or debug a problem. Docker provides the docker exec command to run programs in containers that ...

UFW, or Uncomplicated Firewall, is an interface to iptables that is geared towards simplifying the process of configuring a firewall on Linux servers. In this guide, you'll learn how to set up a firewall with UFW on U...

Drupal is a popular open source content management system (CMS) used to run some of the largest blogs and websites across the internet. Due to its stability, adaptability, and its active community, Drupal remains a…

A Distributed Denial of Service (or DDoS) attack is a malicious attempt to deny legitimate traffic to a targeted server by flooding it with spurious requests. The attacker often accomplishes this by infecting a fleet ...

Data analysis refers to the practice of investigating the structure of data and using it to identify patterns and possible solutions to problems. Within this domain, data science draws on methodologies from statistics...

The central processing unit, or CPU, is a vital component of a computer system. Often referred to as the “brain” of a computer, the CPU receives instructions from software programs or connected hardware, and performs ...

A control panel is a graphical interface that allows users to manage settings and features. They are often found in the context of native apps on desktop or mobile operating systems, where they can be used to configur...

In this tutorial you will create a Let's Encrypt wildcard certificate. Wildcard certificates are SSL certificates that can secure any number of subdomains with a single certificate. You may want one of these if you ne...

A Content Security Policy (CSP) is a mechanism for web developers to increase the security of their websites. By setting a Content Security Policy, web developers can instruct web browsers to only load resources from ...

Node.js is a JavaScript runtime built on Chrome's V8 JavaScript engine. It allows programmers to create fast, scaleable, back-end JavaScript applications. The asynchronous and event-driven nature of Node.js makes it w...

SSH, or secure shell, is the most common way of administering remote Linux servers. Although the daemon allows password-based authentication, exposing a password-protected account to the network can open up your serv...

SSH keys provide a more secure method of logging into a server than using a password. With SSH keys, users can log into a server without a password. This tutorial explains how to generate, upload, and use an SSH key p...