Author: Rahul

In the world of programming, solving practical problems with efficient and elegant code is a skill highly prized. One such problem, seemingly simple but fundamental, is determining whether a given year is a leap year. This article will guide you through understanding leap years, the logic behind identifying them, and how to implement a Python program to automate this determination. By mastering this leap, you’ll not only add a useful tool to your coding arsenal but also deepen your understanding of calendar arithmetic and conditional logic in Python. What Is a Leap Year? A leap year is a year that…

In the world of programming, understanding how to manipulate and work with dates is fundamental. One common challenge is determining whether a given year is a leap year or not. Leap years, which occur roughly every four years, add an extra day to the calendar year, making February 29 days long instead of 28. This adjustment helps synchronize the calendar year with the astronomical year. In this tutorial, we will guide you through the process of writing an efficient C program to determine if a year is a leap year. Understanding Leap Year Logic Before diving into coding, it’s essential…

In modern software development, dealing with JSON data is inevitable, especially when handling user information in web applications. JSON’s ability to nest objects within objects makes it a powerful tool for representing complex data structures. However, this complexity can also present challenges, particularly when you need to process, filter, and manipulate data for multiple users. This article explores advanced Python techniques for working with such nested JSON data, focusing on handling input for two users, filtering data based on specific conditions, and ultimately, enhancing your data manipulation capabilities. 1. A Sample Nested JSON Objects File A nested JSON object is…

SSH keys are a pair of security keys used to log into an SSH server instead of using a password. There are two keys: a public key, which you can share with others, and a private key, which you must keep safe. The PEM format is a common way to store and send these security keys and certificates. It is easy to recognize because it starts with “—–BEGIN CERTIFICATE—–” and ends with “—–END CERTIFICATE—–“. It is popular because it works well with different systems and software. Generate SSH Key in PEM Format First, open your terminal application. Linux and macOS…

When working with files in Python, sometimes you need to name them using the current date and time. This makes us easier to organize files, avoid overwriting existing ones, and keep track of when each file was created. Python has built-in tools like “datetime” and “os” that make this simple to do. In this tutorial, you will learn how to use these tools to create file names that include the date and time. This is a useful skill for tasks like making backups, saving logs, or managing files in an automated way. Let’s get started! Setting Up Your Environment Before…

Deploying Angular applications can be streamlined and made more efficient with Docker-Compose. This guide provides a comprehensive overview of how to containerize your Angular application, making your development process more predictable and your deployments more scalable. Whether you’re a seasoned developer or new to Angular and Docker, this guide will help you understand the essentials of running Angular applications with Docker-Compose. Introduction to Docker and Docker-Compose Docker is a set of platform-as-a-service (PaaS) products that use OS-level virtualization to deliver software in packages called containers. Containers are isolated from each other and bundle their own software, libraries, and configuration files;…

Setting up a Kotlin application environment on Ubuntu involves a series of straightforward steps. Kotlin, a modern programming language that runs on the Java Virtual Machine (JVM), offers a blend of functional and object-oriented programming features. It is interoperable with Java and is known for its concise syntax. In this guide, we’ll cover the essentials of getting your Kotlin development environment ready on an Ubuntu system, including the installation of Java, Kotlin, and a suitable Integrated Development Environment (IDE). Prerequisites Before beginning, ensure you have a working Ubuntu system and administrative privileges (sudo access) to install packages. Step 1: Update…

In the changing world of software development, handling many Software Development Kits (SDKs) can be tough for you. You might like a tools that helps you handle this easily. SDKMAN! helps by making it easier to manage different versions of SDKs on most Unix-based systems. This guide will show you how to install and use SDKMAN on Ubuntu for easy SDK management. What is SDKMAN? SDKMAN! is a tool that helps you install, manage, and switch between different versions of software development kits like Java, Groovy, Scala, Kotlin, and more. It makes it easier for developers to keep their development…

In the world of containerization, Docker has revolutionized the way developers build, ship, and run applications. Docker containers encapsulate all the dependencies required to run an application, making it easy to deploy across different environments consistently. However, managing multiple processes within a single Docker container can be challenging. This is where Supervisor comes into play. What is Supervisor? Supervisor is a client/server system that allows its users to monitor and control a number of processes on UNIX-like operating systems. It is particularly useful for managing complex applications where multiple processes need to run concurrently. Supervisor provides a robust and reliable…

In the world of containerization, Docker has emerged as the go-to solution for creating, deploying, and running applications by using containers. However, as with any data-driven application, backing up your data is paramount to ensure that you can recover from any unforeseen data loss or corruption. This article will guide you through creating an ultimate shell script that not only backs up Docker volumes regularly but also uploads these backups to Amazon S3 for offsite storage and cleans up old backups to conserve space. Why Backup Docker Volumes? Docker volumes are used to persist data generated by and used by…