Introduction: The file system of a Linux server plays a crucial role in managing data storage and retrieval efficiently. Among the various file system types available, ext3 and ext4 are widely used due to their stability, reliability, and compatibility with Linux distributions. Step 1: First, We should verify the current… Continue Reading How to convert file system type from ext3 to ext4 for Linux servers?

BUTTON The Button component in React Native serves as a basic UI element for triggering actions or events when pressed. It provides developers with a simple and consistent way to incorporate user interactions into their applications. PROGRAM: import React from ‘react;import { View, Button, Alert } from ‘react-native’;const SampleButton =… Continue Reading REACT NATIVE USER INTERFACE

Introduction: A replica set in MongoDB is a group of MongoDB processes that maintain the same data set with a designated primary node and one or more secondary nodes. Replica sets provide redundancy and high availability, forming the foundation for robust production deployments Prerequisites: Implementation Step 1: Open the MongoDB… Continue Reading How to Generate a Connection String for a MongoDB Replica Set Using MongoDB Compass

Introduction This document provides a step-by-step guide on creating a new user in Jenkins and configuring permissions for that user using the Matrix-based Authorization Strategy. As an admin, you have the authority to add and manage users in Jenkins, ensuring secure access and control over various aspects of the CI/CD… Continue Reading Jenkins User Creation and Permission Management Guide

Variables Python does not have a particular syntax or command for creating or declaring variable. A variable is created at the moment we assign a value to it. Ex: x=4 Here variable ‘x’ is assigned with value 4 and is considered integer. x=”John” Here variable x is assigned string value.… Continue Reading Python – Variables and Operators

Introduction : File Transfer Protocol (FTP): File Transfer Protocol (FTP) is a standard network protocol for file exchange between clients and servers. Operating on a client-server model, FTP can’t have built-in encryption, making data susceptible to security risks. Despite its simplicity and widespread use, FTP may not be ideal for… Continue Reading How to connect FTP and SFTP via Terminal and Filezilla

Introduction:Personal access tokens (PATs) are an alternative to using passwords for authentication to GitHub when using the GitHub API or the command line. You can create a personal access token to use in place of a password when you are working with GitHub Operations. To generate the personal access token. Prerequisite:GitHub… Continue Reading How to create a new token from GitHub

In Node.Js applications, we can perform email functionality with the use of “nodemailer” library. Nodemailer:It is a comprehensive email module for Node.js, which makes it easy to send emails from your Node.js application. It supports HTML content, attachments, different transport methods (like SMTP, sendmail, etc.), and more. Transporter:Transporter is an… Continue Reading Email Functionality in Node.Js Application:

What is GraphQL?       GraphQL is a query language for APIs. It was developed by Facebook as a solution to fetch data more efficiently. Why GraphQL:     The Problems with REST In REST APIs, each endpoint will return a specific payload of JSON data. Even if we only need certain fields, it… Continue Reading GraphQL Basics

Introduction: Monitoring memory cache utilization is crucial for maintaining optimal system performance and resource utilization in your IT infrastructure. Nagios, a powerful monitoring system, allows you to track various metrics, including memory cache usage. Prerequisite: Server root login credentials. Step 1: Log in to the Ubuntu or Centos server as… Continue Reading How to set up the custom memory cache monitor on Nagios and clear the memory cache with cronjob?