Linux device drivers are essential software components that enable the operating system to interact with hardware devices. They act as a bridge between the kernel and hardware, allowing the system to utilize various peripherals and components. In this guide, we’ll explore the basics of developing Linux device drivers using loadable kernel modules (LKMs). What are […]
Linux kernel modules are powerful tools that allow you to extend the functionality of the Linux operating system without modifying the core kernel code. In this guide, we’ll walk you through creating your first kernel module – a simple “Hello World” program. This hands-on approach will help you understand the basics of kernel module programming […]
Linux Loadable Kernel Modules (LKMs) are pieces of code that can be dynamically added to or removed from the Linux kernel while the system is running. They extend the kernel‘s functionality without requiring a full system reboot, providing flexibility and modularity to the Linux operating system. Advantages of LKMs Using LKMs offers several benefits over built-in kernel modules: Flexibility: Modules can be loaded […]
In the world of computing, two essential components work together to make our interactions with computers possible: the shell and the kernel. While both play crucial roles in operating systems, they serve distinct purposes and operate at different levels. Let’s explore these fundamental concepts and understand how they differ. What is a Shell? A shell […]
In the world of computing, two terms that often come up are “operating system” and “kernel.” While closely related, these components serve distinct purposes within a computer system. This article will explore the key differences between operating systems and kernels, their functions, and how they work together to manage hardware and software resources. What is […]
The .bashrc file is a powerful tool for customizing your Linux command-line experience. This guide will help you understand what .bashrc is, how to use it effectively and provide practical examples to enhance your productivity. What is the .bashrc File? The .bashrc file is a shell script that Bash executes whenever it is started interactively. It […]
Understanding the Linux boot process is crucial for system administrators, developers, and IT professionals working with Linux systems. This knowledge enables effective troubleshooting, system optimization, and customization. Let’s explore the key stages of the Linux boot process in detail. Step by Step Linux Kernel Boot Process Stages BIOS/UEFI Stage The boot process begins when you […]
A kernel is the core component of an operating system, serving as a bridge between hardware and software. It manages system resources, facilitates communication between applications and hardware, and provides essential services for the smooth operation of a computer system. What is a Kernel? The kernel is a computer program that forms the foundation of […]
The Linux kernel is the core component of Linux-based operating systems, serving as the fundamental interface between computer hardware and software processes. As an open-source, monolithic kernel, it manages essential system resources and provides a foundation for the entire Linux ecosystem. Architecture of the Linux Kernel The Linux kernel architecture is divided into two main spaces: […]
Input/Output (I/O) redirection is a powerful feature in Linux that allows users to control where input comes from and where output goes. This capability is fundamental to the Unix philosophy of creating small, focused tools that can be combined in powerful ways. Let’s explore the concepts, types, and practical applications of I/O redirection in Linux. […]