Author: Rahul

A bash script is a plain text file that contains a series of commands. These commands are a sequence of orders for a UNIX-based operating system to run. This script can be executed in two ways: by executing the script file as an input to the bash command, or by specifying the script file as an executable file. In this article, we’ll illustrate how to create a bash script that reverses a given number. For example, if the input is `12345`, the script will output `54321`. Let’s dive in. Bash Script Below is the bash script for reversing a number:…

In the world of programming, there are multiple problems that can be solved in various ways, depending on the chosen approach and the programming language used. One such problem is reversing a number, which is a common task given to beginners in the field of programming. This article will present a step-by-step guide on how to write a program in C that reverses a given number. C is a general-purpose programming language that provides low-level access to memory and is crucial in the field of systems programming. Problem Statement The task is to create a C program that takes a…

Understanding how to determine whether a number is odd or even forms one of the fundamental cornerstones of computer programming. It’s a straightforward task that is commonly used to introduce beginners to conditional statements, and it applies to almost any programming language. In this article, we will focus on creating a C program to check if a number is odd or even. The logic behind determining if a number is even or odd is simple: an even number is always divisible by 2 without leaving any remainder, while an odd number, when divided by 2, always leaves a remainder. C…

Django is an incredibly powerful, high-level Python web framework that fosters rapid development and clean, pragmatic design. It is equipped with various tools and features right out of the box. However, in certain instances, you may want to adjust the settings and configurations of Django to better suit your needs, such as changing the default port it runs on. By default, when you start a new Django project, it will be configured to run on port 8000. But what if that port is already in use or if you simply prefer to use a different port? Here are a few…

Linux is renowned for its powerful command-line interface, which provides an array of commands for navigating, managing, and manipulating the Linux file system. One such command is echo, which may seem simple on the surface, but can perform a multitude of tasks. In this article, we will delve into the details of the echo command in Linux, along with several practical examples. Understanding the Echo Command The echo command in Linux is used primarily to display text or output data. It is often employed in shell scripts and batch files to output status text to the screen or a file.…

Bash, short for Bourne Again SHell, is the default command-line interpreter for many Linux distributions and MacOS. It provides a way for users to interact with these operating systems by executing commands. However, bash also includes a number of special characters that have unique meanings. Sometimes, these special characters can cause errors or unexpected behavior if they’re not handled correctly. The process of removing the special meaning from characters is known as “escaping”. Escaping is essential when you’re trying to use these characters as literals – that is, as themselves rather than as their special functions. Special Characters in Bash…

Bash scripting is a crucial skill for developers, system administrators, and anyone else who needs to automate tasks on Unix or Linux systems. Occasionally, you’ll need to use a single quote (‘) within a string in a bash script. However, due to how bash interprets single quotes, this might create issues if not handled correctly. In this article, we’ll delve into how to escape single quotes in bash scripts. Understanding the Problem In bash scripting, single quotes (‘) are used to preserve the literal value of all characters within the quotes. Inside single quotes, every special character is preserved in…

One of the powerful features of the Linux operating system is the ability to control your system’s behavior by running scripts at startup, shutdown, or reboot. This article serves as a practical guide to setting up these scripts in Ubuntu Linux. From automating routine tasks to initializing services, the potential use cases are virtually limitless. Let’s dive in and explore how to use this feature to your advantage. Basics of Startup and Shutdown Scripts Before we delve into the configuration of these scripts, let’s quickly cover the basics. A startup script in Ubuntu Linux is a shell script that runs…

Secure Shell, or SSH, is a robust protocol that many IT professionals and network administrators use daily to establish secure connections to remote systems. It is designed to provide secure remote logins and command execution, but not without its share of problems. One such issue is the SSH Broken Pipe Error. Understanding what this error means and how to avoid it is essential for maintaining uninterrupted, secure communications. What is the SSH Broken Pipe Error? The SSH Broken Pipe Error is typically encountered when an SSH session unexpectedly terminates. This is often due to network issues, server timeouts, or unstable…

As a system administrator, developer, or tech enthusiast, you will often find yourself interacting with Bash or another Unix shell. For tasks that may take a long time to execute, it’s helpful to provide a progress bar or some kind of indication to let you know that the script is still running and how far it has gotten. This article offers a hands-on approach to creating a progress bar using Bash scripting. What is a Progress Bar? A progress bar is a visual indicator used in the computing environment to show the progress of an operation. It’s a user-friendly way…