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Installing Ruby on Rails with RVM on Ubuntu 20.04

Ruby on Rails is one of the most popular web app frameworks. It’s open-source software designed for developers to create successful projects while writing fewer codes. Having a fun and enjoyable development experience is one of the fundamental principles that make Ruby on Rails an attractive choice. The RVM (Ruby Version Manager) tool, as the name suggests, is a third-party … Read More

Pranay Kapgate · 2022-02-10

Setting up Replication in MySQL on Ubuntu

MySQL replication is an interesting feature that allows users to manage multiple copies of one or more MySQL databases. The data is copied automatically from source to replica databases. It can be useful in numerous situations, such as working with the data without compromising the main database, data backup, or scaling the database access, etc. In this guide, we will … Read More

Hark Labs · 2022-02-10

Creating a Sudo-Enabled User on CentOS 8

Introduction If you are working with CentOS 8, you should know what are the critical commands to use with it. One of these is the sudo command. This command is very useful for creating new users. With the sudo command, you can grant certain users special administrative privileges. Typically, these privileges are only accessible to the root user. If you … Read More

Hark Labs · 2022-02-04

How To Set Up GitLab Continuous Integration (CI) Pipelines on Ubuntu 20.04

Every developer understands how crucial version control is to the software development lifecycle. It enables multiple people to work simultaneously on a single project, each person maintaining their own copy of the code and choosing when to share it with the rest of the team. To achieve this, developers make use of Git repositories to help with version control. GitLab … Read More

Hark Labs · 2022-01-31

Adding and Deleting Users on CentOS 8: How To Guide

Linux is a multi-user operating system. Having proper knowledge of user management is crucial to proper system administration. If you are configuring a fresh Linux server, adding and deleting various users is usually one of the first things you have to do. This guide outlines the steps of adding and deleting users on CentOS 8. Prerequisites Creating and deleting users … Read More

Pranay Kapgate · 2022-01-28

Installing Java on CentOS and Fedora

In the world of programming, Java has been one of the top programming languages. Java is a high-level programming language that follows the concept of object-oriented programming systems. It’s also a platform-independent language that generates cross-platform applications. Java is everywhere – banking and transactions, web frameworks, games (Minecraft), and even mobile operating systems (Android). In this guide, we will walk … Read More

Pranay Kapgate · 2022-01-25

Installing the Django Web Framework on Ubuntu 20.04

Django is a high-level web framework that allows the rapid development of secure and maintainable websites. It’s a free and open-source framework written with Python. Django is also popular for additional features like performance, security, scalability, portability, and maintainability. This guide will demonstrate how to install Django and set up a simple web app on Ubuntu 20.04. Django on Ubuntu … Read More

Hark Labs · 2022-01-24

Configuring a Firewall with UFW on Ubuntu 18.04

A firewall is one of the core components of securing a system. It’s responsible for managing the incoming and outgoing connections over the network. It’s the primary line of defense for your servers and data. This is why it’s paramount to have a well-configured firewall. In this guide, we will walk you through the steps of setting up a firewall … Read More

Hark Labs · 2022-01-20

The txt File Format: Working with Plain Text Files in Python 3

Introduction One of the primary functions of programming languages is to help you deal with data. This includes data writing, reading, storage, as well as transfer. Python is one of the most popular programming languages. If you are planning to use Python, you should have a basic idea of how to use different file types. The simplest of file types … Read More

Hark Labs · 2022-01-19

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