Author: Rahul

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…

Are you eagerly waiting for the release of Ubuntu 24.04 LTS? Codenamed Noble Numbat, this highly anticipated Long-Term Support (LTS) version is released on April 25, 2024. In preparation for this milestone, let’s delve into everything you need to know about downloading and installing Ubuntu 24.04 LTS. Why Ubuntu 24.04 LTS? Ubuntu 24.04 LTS is the latest iteration of the renowned Ubuntu operating system, renowned for its stability, security, and long-term support. As an LTS release, Ubuntu 24.04 will receive essential updates and security patches for an extended period, making it an ideal choice for both personal and enterprise use.…

Deploying .NET Core applications on Linux servers marks a significant shift from the traditional Microsoft-centric deployment platforms. The cross-platform nature of .NET Core allows developers to enjoy the performance, reliability, and security of Linux environments. This guide provides a comprehensive overview of deploying .NET Core applications across various Linux distributions, focusing on using Nginx or Apache as a reverse proxy and securing deployments with SSL. Prerequisites Before diving into the deployment process, ensure you have: A .NET Core application ready for deployment. A Linux server (Ubuntu, CentOS, or any preferred distribution). Basic knowledge of the Linux command line. Step 1:…