Author: Rahul

The GET and POST methods are two different types of HTTP requests. HTTP, or Hypertext Transfer Protocol, is a protocol that dictates how messages are formatted and transmitted on the World Wide Web. Let’s explore these methods in more detail and see how they differ. GET Method The GET method requests a specified resource from a server. It carries request parameters, if any, in the URL string. The structure of a GET request might look like this:

It’s important to note that because the parameters are embedded in the URL, they are visible to everyone who has access to…

Before we get into the specifics of how to create a Python program that checks whether a number is odd or even, it’s essential to understand what these terms mean. An even number is an integer that is “evenly divisible” by 2, i.e., divisible by 2 without leaving a remainder. An odd number, on the other hand, is an integer that is not evenly divisible by 2. Python, like many other programming languages, offers a straightforward way to check if a number is odd or even using the modulus operator, %. The modulus operator returns the remainder of a division…

Named after the ancient Greek mathematician Pythagoras, Pythagoras’ theorem is a fundamental principle in Euclidean geometry. The theorem plays a pivotal role in several branches of mathematics and physics, forming the bedrock for distance calculations, vector algebra, and trigonometry, among others. Pythagoras’ Theorem: The Formula Pythagoras’ theorem applies to right-angled triangles — triangles that include an angle of 90 degrees (π/2 radians). The theorem asserts that for any triangle with a right angle, the square of the hypotenuse’s length (the side opposite the right angle) is identical to the sum of the squares of the lengths of the remaining two…

In the world of shell scripting, efficient string manipulation is a crucial skill. Being able to replace one substring with another in a given string can significantly enhance the functionality and flexibility of your bash scripts. In this article, we will explore a detailed guide on how to accomplish substring replacement in Bash scripts, accompanied by practical examples. Prerequisites Before diving into substring replacement, it is important to have a basic understanding of Bash scripting and familiarity with string manipulation concepts. Step 1: Defining the String and Substring The first step is to define the original string and the substring…

Wget is a free and powerful utility available for most Unix-like operating systems, including Linux, Mac, and Windows via Cygwin. It allows you to retrieve files and web pages from servers using various protocols, such as HTTP, HTTPS, and FTP. However, there may be situations where you want to download files from HTTPS sites, but the site’s SSL certificate isn’t recognized, is expired, or is self-signed. It’s usually safer to fix the underlying issue causing the SSL error. But, if you are sure about the site’s authenticity, you might want to bypass or ignore SSL certificate checks with Wget. In…

When working with Curl in applications that connect to servers via SSL or HTTPS, verifying the SSL certificate of the server is a default functionality. This ensures that the communication is secure and that the server is who it claims to be. However, there might be situations where ignoring or bypassing SSL certificate checks is necessary, such as in a development environment, testing, or when dealing with self-signed certificates. This article presents a detailed walkthrough on how to achieve this with Curl. Please note: Ignoring SSL certificate checks can expose your application to security risks such as man-in-the-middle attacks. Always…

Bash scripting is a powerful tool for automating tasks and creating complex workflows in the Linux environment. One of the key features of bash scripting is the ability to define and call functions. Functions allow you to encapsulate a set of commands and execute them as a single unit, providing modularity and reusability to your scripts. In this article, we will explore how to call a bash function and retrieve its return values. Defining a Bash Function Before we dive into calling a function and retrieving its return values, let’s first understand how to define a bash function. Functions in…

Python, a high-level interpreted language, is well-known for its simplicity and readability. One of the core principles of Python is that “There should be one– and preferably only one –obvious way to do it.” This clarity and emphasis on simplicity extend to Python’s function definition and call syntax. In this article, we will look at a detailed example of how to define a function in Python, call it, and retrieve the return value. What is a Function in Python? A function represents a segment of code designed for reusability that carries out a particular action. By enhancing the modular structure…

In this article, we will explore a simple yet interesting problem: how to reverse a number in Java. This problem is common in beginner-level programming exercises and tests. It helps learners understand basic Java constructs, control flow, and arithmetic operations. The solution involves getting each digit of the number and arranging these digits in the reverse order. Approach To reverse a number in Java, we use the modulus (%) and integer division (/) operations. Modulus (%) operation: In Java, the modulus operation finds the remainder after division of one number by another (also called divisor). For example, `10 % 3`…

When working with Laravel, a popular PHP framework, you may encounter various challenges. One such issue pertains to encryption, which is a critical aspect of securing data within web applications. Laravel uses OpenSSL for encryption and supports specific ciphers, namely AES-128-CBC, AES-256-CBC, AES-128-GCM, and AES-256-GCM. If you try to use an unsupported cipher or an incorrect key length, Laravel will throw an error. In this document, we discuss such an error and outline steps to rectify it. The Error When trying to utilize Laravel’s Encrypter, you may come across an error message like this: Unsupported cipher or incorrect key length.…