Author: Rahul

To install the latest version of Node.js on Ubuntu, follow a few simple steps. First, you’ll need to update your package list. Then, install Node.js from the official repository, which always provides the newest version. Node.js is a popular runtime environment that allows you to run JavaScript code outside a browser. It’s essential for developing modern web applications. You can also use the Node Version Manager (NVM) to install a specific version of Node.js on your system. Step 1: Configuring Node.Js PPA Node.js has two types of releases: LTS (Long Term Support) and the current release. Choose the version you…

We can use replace() method to replace any string or character with another in javascript. It searches for a defined string, character, or regular expression and replaces it. This method doesn’t change the original string but it returns the updated string as result. Syntax: string.replace(old_string, new_string) Replace String in JavaScript with Examples In this tutorial, we will discuss a few examples of replacing strings in Javascript. Let’s try some examples: Here is the first example to initialize a text in a variable, then replace it with another text.

Run the above example and see the results. Thanks to playcode.io…

Crontab, a powerful utility in Unix and Unix-like operating systems, is used to schedule commands to run periodically at fixed times, dates, or intervals. This powerful tool, when combined with environment variables, can offer an even more robust solution for automating and managing tasks. But what are environment variables, and how can you use them with Crontab? Let’s explore this in depth. Understanding Environment Variables Environment variables in Linux are dynamic-named values that are stored within the system and used by applications. These variables, which contain data used by one or more applications, can influence the behavior of your processes.…

Anaconda is an open-source platform that is used for R programming and Python. Which contains a large variety of packages and repositories. It is important in its functionality as it provides processing and computing data on a large scale and also to program in python language. The Anaconda provides an easily manageable environment for python applications. It provides a variety of tools for collecting data from various sources using machine learning and AI. With the help of Anaconda, we can deploy applications with a single button click. This tutorial will help you to install and use the Anaconda on Ubuntu…

Apache Kafka is an open-source, distributed event streaming platform developed by the Apache Software Foundation. This is written in Scala and Java programming languages. You can install Kafka on any platform that supports Java programming language. This tutorial provides you with step-by-step instructions to install Apache Kafka on Ubuntu 22.04 LTS Linux system. You will also learn to create topics in Kafka and run producer and consumer nodes. Prerequisites You must have sudo privileged account access to the Ubuntu 22.04 Linux system. Step 1 – Installing Java We can run the Apache Kafka server on systems that support Java. So…

Git is a very popular tool among the developers to keep track of changes in their code and manage their projects better. One of the most important feature of Git is called branching. Which helps us to create different versions of our project and work on them separately. In this article, we will learn how to make an empty branch in Git using the –orphan option. An “orphan” branch in Git is a branch that doesn’t have a parent branch. This means it doesn’t include any of the history from the main or any other branch. This is useful when…

A Virtual Environment provides an isolated environment for your application. That helps to maintain multiple Python applications on a single machine without any module conflicts. Once we create a activate the virtual environment, all the remaining activities are performed under that environment. It also helps to migrate the application to a new system. In the previous article, you have learned about the installation of Python on a Windows system. This tutorial will help you to create a virtual environment in a Python application on Windows systems. Create a Virtual Environment in Python A Python module venv is available by default…

Certbot is a free tool that helps manage Let’s Encrypt certificates. With Certbot, you can create certificates with one simple command and set up web servers easily. By default, Certbot saves all certificates in the directories listed below. We don’t recommend deleting files manually. In this guide, we will show you how to delete old SSL certificates using Certbot’s command line. /etc/letsencrypt/live /etc/letsencrypt/renewal /etc/letsencrypt/archive How to Delete a Let’s Encrypt SSL Certificate Certbot lets you delete certificates automatically. To remove a certificate, use this command: sudo certbot delete This command will show a list of domain names. Choose the number…

The Ubuntu 17.10 and later systems use the Netplan as a new command-line utility for managing network interfaces. It works with the Systemd-networkd or NetworkManager renderes. Netplan configuration files are written in YAML format, allowing you simple-to-complex networking configurations. Which work from the Desktop to the server and from the cloud to IoT devices. This article will help you to configure static IPv4 addresses on Ubuntu systems using the Netplan command-line tool. We have recently tested this article with Ubuntu 24.04 LTS system. Step 1: Check the Network Interface Name The first step is to find the network interface name,…

In Linux, links to files are created in the same way that references to files are created in most common programming languages. These links are divided into two categories: hard and soft links. A hard link is effectively an identical replica of the file, therefore the hard link and the actual file will both have the same inode. A soft link, also known as a symbolic link, functions similarly to a shortcut or pointer to a file. It is not an exact replica of the file, but rather a pointer to the original. The inode values of a soft link…