This is a tutorial on how to install ReactJS, an open-source JavaScript library for creating interactive user interfaces, on Ubuntu 20.04 or 18.04. The tutorial includes the necessary steps to install Node.js, npm, and the Yarn package manager. It guides users through creating their first React app, testing it, building it for production, and finally…

This post provides a tutorial on using the ‘chattr’ command in Ubuntu Linux, a tool used to modify file attributes. It walks through the syntax of the command, defines operator and option values, and provides examples of usage. It also discusses how to make a file immutable and previews the command’s help page.

This tutorial demonstrates how to install and configure Fail2ban on Ubuntu 20.04 and 18.04 to enhance Linux server security. Fail2ban protects servers from brute force and other automated attacks by scanning server logs for malicious activity and banning offending IPs via the system’s firewall. After installation, configuration involves creating a ‘.local’ file for specific adjustments,…

The article provides a tutorial on how to install Chef Workstation on Ubuntu 20.04 or 18.04. Chef Workstation, part of the Chef configuration management tool, is where system admins create recipes, cookbooks, and development work. The tutorial gives two methods to install Chef Workstation – via the APT Repository and using a script, detailing the…

This tutorial provides instructions on installing the Pritunl VPN server on Ubuntu 20.04 | 18.04. Pritunl is a free, open-source enterprise VPN that supports secure tunnelling and local network access for remote users. The guide covers prerequisite package installations, adding repository keys and files to Ubuntu, installing Pritunl, and installing MongoDB as a dependent database…

The tutorial provides steps on how to install Chatwoot, an open-source real-time messaging platform, on Ubuntu 20.04 | 18.04. After the installation, the server can be accessed at a specific IP address followed by port #3000. Users are advised to configure the essential environment variables, Mailer, and cloud storage configuration for the proper functioning of…

This tutorial guides students and new users in setting up two-factor authentication for SSH on Ubuntu 20.04 | 18.04 using Google Authenticator. The process involves installing Google Authenticator, adjusting the SSH Server’s default configuration file, and updating the PAM SSH configuration file. Once setup, the user will be prompted for a randomly generated OTP each…