Author: Rahul

Linux, known for its efficiency and flexibility, offers various methods to perform simple yet essential tasks like counting the number of blank lines in a file. This capability is particularly useful for programmers and system administrators who often work with text files and scripts. This article explores several methods to count blank lines in a file using Linux command-line tools. Method 1: Using grep One of the simplest methods to count blank lines is using the grep command. grep is a powerful text-search utility that can also count lines that match a specific pattern. To count blank lines, you can…

Before diving into the technicalities, it’s important to understand the different Java versions. Oracle releases new versions regularly, and each version may have differences in performance, security, and functionality. Commonly used versions include Java 8 (LTS), Java 11 (LTS), and the latest release at the time of writing. Step 1: Installing Multiple Java Versions Ubuntu’s package manager, APT, makes it easy to install multiple Java versions. Here’s how you can do it: Update Your Package List: Open a terminal and run: sudo apt update Install Java: You can install multiple Java versions by running: sudo apt install openjdk-8-jdk openjdk-11-jdk Replace…

Odoo is an open-source ERP and CRM software that offers online tools for businesses. It has a wide variety of free and paid modules to enhance its capabilities. Users can choose to use Odoo on its cloud platform (SaaS) or install it on their own servers. By default, Odoo operates on port 8069, but you can change this for security reasons or if you are running multiple Odoo installations. This guide will walk you through the steps to change the default port used by Odoo. Prerequisites Assuming you have Odoo installed on your server. Administrative or root access to the…

This guide is designed for system administrators and IT specialists aiming to boost their Odoo environment’s performance and security. By configuring Nginx as a reverse proxy, you can optimize request handling and add a protective layer to your Odoo setup. This article will provide a detailed walkthrough on setting up Nginx as a reverse proxy for Odoo, whether it’s hosted on a local server or in the cloud. Configuring Nginx as a Reverse Proxy for Odoo Follow these steps to ensure your Odoo application is not only accessible and secure but also performing at its best. Step 1: Enable Necessary…

Maven is a powerful project management tool used by developers worldwide to handle project builds, dependencies, and documentation. However, it’s not uncommon to encounter errors during the build process. One such error is “Invalid target release: 17”, which typically occurs when compiling a project with Maven. This article aims to provide a comprehensive guide on identifying and resolving this error to ensure a smooth build process. Understanding the Error The error message “Invalid target release: 17” indicates that Maven is attempting to compile the project using Java version 17, but it’s unable to do so. This could be due to…

Odoo is a collection of business-related applications and software tools that can help manage different parts of a company, such as inventory, billing, manufacturing, and human resources. It’s like a big toolbox that helps businesses to choose a tools based on their requirements to run more smoothly and efficiently. You can think of Odoo as a customizable kit that helps companies handle all their various tasks in one place. Odoo usually uses port 8069 to operate, but you can change this if you need to. If you want a front-end web server that receives requests on port 80 or 443…

This tutorial will help you with step-by-step instructions to setup sftp only user in MX Linux. MX Linux popularity is increasing day by day and it becoming first choice for desktop systems. In the case, you want to provide access to someone with sftp only without shell access, this guide is for you. Step 1: Installing SSH and SFTP Firstly, ensure your MX Linux system has SSH (Secure Shell) installed as it forms the backbone for SFTP. Begin by updating your package list and installing SSH through: sudo apt update sudo apt install openssh-server This step is foundational for establishing…

Python, a versatile and popular programming language, continues to evolve with its latest release, Python 3.12. This guide will walk you through the process of compiling and installing Python 3.12 on Ubuntu, Debian, and Linux Mint systems. Compiling Python from source allows you to customize the build and potentially achieve better performance. Prerequisites Operating System: Ensure you are running Debian-based Linux distributions. Basic Terminal Knowledge: Familiarity with Linux command line interface is required. Required Tools and Libraries: Development tools and libraries need to be installed to compile Python. Step 1: Update Your System Before starting, update your system’s package list…

In the world of Linux, text processing is a fundamental skill. Whether you’re a developer, a system administrator, or just a Linux enthusiast, knowing how to manipulate and extract text can significantly enhance your productivity. This article focuses on a specific aspect of text processing: extracting text that lies between two specific words. We will explore various command-line tools and techniques to achieve this, complete with practical examples. Understanding the Basics Before diving into the methods, it’s important to understand the text we are dealing with. Text in Linux can come from a variety of sources: files, command output, logs,…

Python, a versatile and widely-used programming language, has two primary types of variables used within classes: class variables and instance variables. Understanding the differences between these two is crucial for effective object-oriented programming in Python. 1. Class Variables Class variables are shared across all instances of a class. They are defined within the class but outside any methods. Class variables are generally used for properties that should be the same for every instance of a class. Example: class Animal: kingdom = ‘Animalia’ # Class variable def __init__(self, name, species): self.name = name self.species = species In this example, kingdom is…