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Python 3 Tutorial: Indexing and Slicing Strings

Introduction Python is one of the most popular programming languages across the world. It uses a data type that comprises sequences made up of individual characters. These characters may be letters, numbers, symbols, or whitespace characters. Other types of sequence-based data types include lists and tuples. Just like them, you can also access, index, and slice strings in Python. In …

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How to Host a Docker Image Repository and Build Docker Images with GitLab Self-Managed Instance on Ubuntu 20.04

Containerization technology has greatly advanced in the software development tech space as the most accepted method of packaging and deploying applications in cloud environments. This has been necessitated by the need for continuous integration (CI) and continuous deployment (CD) which are defining aspects of DevOps. Software developers and engineers make use of containers to achieve the CI/CD aspect of software …

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How to Use an Elastic Standalone Container to Host WordPress with CloudSigma PaaS

In this tutorial, we will be discussing how you can install WordPress inside a standalone elastic container in order to make the solution even more cost-effective and lightweight than it already is. The WordPress Standalone package can be installed very easily through the CloudSigma PaaS platform. This means that with a single click, you can supplement your small and medium-sized …

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Using *args and **kwargs Parameters in your Code: a Python 3 Tutorial

Introduction Python is one of the most popular programming languages worldwide. In Python, parameters are a part of function definitions. They enable you to specify certain arguments for a function. The argument can be accepted and applied by the function. However, it is not possible for you to know at the time of coding what exact use cases may be …

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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 …

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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 …

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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 …

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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 …

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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 …

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Working with JavaScript: What are Objects?

Introduction JavaScript is a computer language that is used all over the world for programming purposes. There are various components that constitute the language. In this tutorial, we will be covering objects which are a data type. Objects are standalone entities that may comprise names, keys, or values. Each of these collections is represented in name:value pairs. These pairs may …

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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 …

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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 …