Author: Rahul

JAVA_HOME is an environment variable used by various Java-based applications to locate JVM (JDK) on any system. Similarly, Maven also required the JAVA_HOME to be set correctly on your system. The Problem: When I tried to check the Maven version on our macOS PC, I got the following error in the output. mvn –version The JAVA_HOME environment variable is not defined correctly, this environment variable is needed to run this program. The Solution: As the error message clearly shows that the JAVA_HOME environment variable is not set on my PC. So the simple solution is to set it correctly. Use…

Recent versions of Debian and Ubuntu have moved away from the apt-key command for importing GPG signing keys, a shift initiated with Debian 11 and Ubuntu 22.04. This command was previously used for adding GPG keys to the system but now generates a warning: “Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d instead (see apt-key(8)).” While apt-key can still be used, future releases plan to eliminate its support entirely. This guide focuses on a secure alternative for importing GPG repository signing keys into systems like Ubuntu, Debian, Linux Mint, and Pop!_OS using the signed-by method. Importing GPG Keys Without…

Google Chrome is one of the most popular web browsers with over 1 billion users worldwide. It can be used on Windows, macOS, and Linux. To install Google Chrome on a Mac, you need to use its standalone installer file from the official website. This guide will show you how to install Google Chrome on macOS. Steps to Install Google Chrome on macOS To install Google Chrome on your Mac, follow these steps: Open Safari and visit google.com/chrome. Download Application: You will see a download button in center of page as seen in below screenshot. Click the “Download Chrome” button…

Have you been searching for answers about how to install Minecraft on Ubuntu? You’ve come to the right place! This article will tackle everything you need to know about installing Minecraft on Ubuntu. If you are reading this, chances are that you have already fallen in love with Minecraft and want to continue playing it on your Ubuntu machine. However, the installation process isn’t as simple as it is on other platforms such as Windows or Mac OS. If you’re reading this article, then we assume that you have already tried to install the game from its website (if not,…

Many of the applications required weekly cron jobs to perform a few tasks. For example, perform weekly maintenance, cleanup disk spaces, cleanup mailing list, and other tasks. You may run your weekly tasks on any day of the week. CPU and memory consumption is required for jobs that require a CPU and memory. Those jobs are best to run on a weekend day. Scheduling a Cronjob for Sunday. The day of the week is determined by the fifth section of the cron timer. You can specify a day by using numbers such as 0-7, where 0 and 7 both correspond…

We’ll learn about how to execute several commands simultaneously in Linux in this article. Every operator has its own advantages when it comes to separating commands. This tutorial will help a little bit in improving how we execute commands and author shell scripts. The Linux operating system offers a simple command line interface for managing the system. There are shells such as Bash, CSH, and Zsh that accept commands from the user and route them to the kernel. A command is used to perform some function on the system. We may also specify multiple shells at once and execute them…

An access modifier is a special kind of variable declaration that controls how and where other code can use the declared class, variable, or method. This blog will explain what access modifiers are and the three different levels of visibility for classes, methods, and variables with some practical examples. Understanding the scope of your code is essential for writing readable and maintainable programs. Access modifiers are one way to achieve this goal. They tell other users of your code how you want them to interact with specific methods or variables. If you’re new to Java programming, these concepts may seem…

Have you heard about the new and trending JavaScript library called React.js? It’s so cool that it has been extensively used by developers to create interactive User Interfaces and components in their applications. The React library is also a great choice when you want to build fast and scalable apps with a component-based approach. If you haven’t started using it yet, it’s time you start learning. In this blog post, we will show you how to set up a React development environment on your Mac computer. Read on! Pre-Requisites First, you need to make sure that you have the latest…

Bash, a name which is basically an acronym for Bourne-Again Shell, is a pretty popular shell that came after the Bourne Shell and normally is available with any Linux and GNU distribution. It adds several advanced features in a way that it remained backward compatible with the previous. One of the important environment variables in Bash is the PATH. This lists the directories in which the system should look for an executable file when you give a command through the terminal. How to Set the PATH Variable If you need to include another directory in the PATH variable, you can…

In the world of programming, efficiency is key. Automation is one of the most powerful tools in a developer’s toolkit, allowing for the seamless execution of tasks without manual intervention. For Python developers, one of the most accessible and effective methods to automate scripts is through Crontab, a time-based job scheduler in Unix-like operating systems. This article provides a comprehensive guide to scheduling Python scripts using Crontab, ensuring that your tasks are executed efficiently and reliably. Step 1: Writing Your Python Script Before scheduling a task, you need a Python script. Write your Python script to perform a specific task.…