Author: Rahul

I, Rahul Kumar am the founder and chief editor of TecAdmin.net. I am a Red Hat Certified Engineer (RHCE) and working as an IT professional since 2009..

In the realm of programming, understanding how to work with dates and times is crucial for a vast array of applications, from scheduling systems to historical data analysis. Among these tasks, determining whether a year is a leap year is a common challenge. Leap years, which have 366 days instead of the usual 365, add a day to February to keep our calendar in alignment with the Earth’s revolutions around the Sun. This article provides a comprehensive guide on how to master leap year calculations in Java, offering a deep dive into the logic behind leap years and showcasing how…

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In the realm of Linux, managing file systems and data storage efficiently is a fundamental skill for users and administrators alike. One particularly useful technique involves automounting remote shares, allowing for seamless access to network storage as if it were local. This guide will walk you through the process of using the /etc/fstab file to automate the mounting of remote shares, enhancing your Linux system’s connectivity and data management capabilities. Understanding /etc/fstab Before diving into the specifics of automounting remote shares, it’s crucial to understand what /etc/fstab is. The File System Table, or fstab, is a configuration file in Linux…

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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…

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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…

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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…

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SSH (Secure Shell) keys are a pair of cryptographic keys used to authenticate to an SSH server as an alternative to password-based logins. A key pair consists of a public key, which you can share freely, and a private key, which must be kept secure. The PEM format, standing for Privacy Enhanced Mail, is a widely used format for storing and sending cryptographic keys, certificates, and other data. It is recognizable by its “—–BEGIN CERTIFICATE—–” and “—–END CERTIFICATE—–” headers and footers. Its popularity stems from its compatibility and ease of use across different systems and software. Generate SSH Key in…

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Python is a high-level programming language that is widely used for automating repetitive tasks, including file and directory management. Its standard library provides modules such as os and datetime that simplify file operations and manipulation of dates and times, respectively. This capability allows users to create scripts that can automate the organization of files and directories based on the current date and time, making the management of large volumes of data more manageable and efficient. This article will guide you through the process of automating file management with Python, focusing on crafting date and time-based file and folder names. Setting…

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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;…

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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…

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In the ever-evolving landscape of software development, managing multiple Software Development Kits (SDKs) can be a daunting task. This is where SDKMAN! steps in, offering a versatile tool that simplifies the process of managing parallel versions of multiple Software Development Kits on most Unix-based systems. This comprehensive guide aims to walk you through the steps of installing and utilizing SDKMAN on Ubuntu 22.04, ensuring a seamless development kit management experience. What is SDKMAN? SDKMAN! is a version manager that provides a convenient way to install, manage, and switch between different versions of software development kits, such as Java, Groovy, Scala,…

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