Author: Rahul

Shell scripting is a powerful tool for DevOps automation. It allows you to automate repetitive tasks, manage and configure your infrastructure, and streamline your deployment processes. However, writing effective shell scripts requires following best practices and using certain techniques to make your code efficient, modular, and maintainable. In this article, we’ll discuss some of the best practices and tips for shell scripting that can help you with your DevOps automation. 1. Use Meaningful Variable Names Using meaningful variable names can help make your code more readable and understandable. It also makes it easier for others to maintain your code if…

Laravel is a favorite PHP web application framework that allows one to easily build modern, scalable web applications. The salient feature of Laravel is handling background jobs using a queueing system. Laravel queue workers have been built to process the queued jobs asynchronously in the background. This really can boost the performance and responsiveness of your web application. While Laravel provides you with a straightforward command-line interface for handling queueing workers, managing them to run constantly in a production environment may be somewhat challenging. In this tutorial, we are going to look at how you can run Laravel queue workers…

MySQL, the world’s most popular open-source relational database management system, offers several storage engines to cater to diverse requirements. In this article, we will delve into the intricacies of three primary storage engines: InnoDB, MyISAM, and MEMORY. By understanding their features, performance, and use cases, you can make informed decisions to optimize your MySQL database. 1. Overview of Storage Engines 1.1. InnoDB InnoDB is the default storage engine for MySQL since version 5.5. It is a high-performance engine that supports transactions, row-level locking, and foreign key constraints. InnoDB is best suited for applications that require high concurrency, data consistency, and…

In Bash, you can easily calculate the difference between two dates. This can be useful in various scenarios, such as calculating the number of days between two events or determining the age of a person. In this article, we’ll discuss different methods to calculate the difference between two dates in Bash. Calculate difference between two dates The ‘date’ command in Bash can be used to calculate the difference between two dates. The syntax for using the ‘date’ command is as follows: echo $((($(date -d “YYYY-MM-DD” +%s) – $(date -d “YYYY-MM-DD” +%s))/86400)) In the above command, replace “YYYY-MM-DD” with the two…

As a web developer, understanding PHP session timeout is essential to building secure and reliable web applications. A PHP session is a way to store user information across multiple pages, and session timeout refers to the duration for which a session remains active before expiring. In this step-by-step guide, we will walk you through the process of changing PHP session timeout. What is PHP Session Timeout? When a user visits a website, a session is created on the server, which stores user data such as login credentials, shopping cart contents, or other information that needs to persist across multiple pages.…

Nano is a popular text editor used in Linux and other Unix-like operating systems. It is a powerful and easy-to-use tool that can help you create and edit files quickly and efficiently. However, if you are new to Nano, you might be wondering how to save and quit your work. In this article, we will show you how to save and quit in Nano. 1. Saving in Nano (Save Changes) To save your work in Nano, you need to follow these steps: Press the “Ctrl + O” keys at the same time to save content. This will prompt Nano to…

Python is a powerful programming language that can be used for various purposes, including file and directory management. In this article, we will explore the various ways in which Python can be used for managing files and directories. Files and directories are an essential part of any computer system. They are used to store and organize data and files on a computer. Python provides many built-in functions and modules that can be used to interact with files and directories. File Handling Python provides a built-in function called open() that can be used to open and manipulate files. The open() function…

Python is a popular programming language that is widely used for developing a variety of applications. One of the features that makes Python stand out is its ability to return multiple values from a function. This feature enables developers to create functions that return more than one value, making it easier to work with complex data structures and improve code readability. In this article, we will discuss how to return multiple values from a function in Python. What are Multiple Return Values? In Python, a function can return a single value or multiple values. When a function returns multiple values,…

Python is a high-level, interpreted, interactive, and object-oriented scripting language that is widely used across a variety of fields such as data analysis, artificial intelligence, web development, and more. The beauty of Python lies in its simplicity and the extensive library support it provides, allowing developers to create feature-rich applications with fewer lines of code. In this article, we will explore one such practical application of Python – checking the size of a file. Why Check the File Size? Before we dive into the code, let’s first understand why we might need to check the size of a file. File…

MongoDB is a popular open-source, document-oriented NoSQL database that provides high performance, scalability, and flexibility. It is widely used in modern web applications due to its ability to store and manage large volumes of unstructured data. MongoDB can be installed on various operating systems, including Ubuntu 22.04. In this tutorial, we will walk through the steps to install and secure MongoDB on Ubuntu 22.04. We will cover the installation process for both the Community and Enterprise editions of MongoDB. Additionally, we will go through the process of securing MongoDB with authentication, SSL/TLS encryption, and firewall rules. In this article, we…