Saurabh Khan - GravityDevOps

Basic Linux Architecture: Kernel, Shell, Filesystem

Linux is an open-source operating system that powers a wide range of devices, from servers to embedded systems. Its architecture is designed for efficiency, security, and flexibility. Understanding the basic…

Saurabh Khan February 25, 2025

Linux

What is Linux? Why Use Linux? and Linux Distributions: Ubuntu, CentOS, RHEL, Debian

Introduction Linux is an open-source, Unix-like operating system that powers a vast majority of the world's servers, embedded systems, and even personal computers. It is widely known for its stability,…

Saurabh Khan February 25, 2025

DOCKER CONTAINERIZATION

Docker Security Scanning: A Comprehensive Guide

Introduction As organizations increasingly adopt Docker for containerized applications, security remains a top priority. One critical aspect of container security is Docker Security Scanning, which helps identify vulnerabilities in container…

Saurabh Khan February 23, 2025

DevOps

DevOps for Beginners: Full Lifecycle Explained with Real-World Examples

What is DevOps? DevOps is a culture, methodology, and set of practices that aim to bridge the gap between development (Dev) and operations (Ops) to enable faster, more reliable software…

Saurabh Khan February 22, 2025

DevOps

The Ultimate DevOps roadmap with Advanced Tools for 2025

DevOps Roadmap 2025 1. Fundamentals (Beginner Level) ✅ Linux & Shell Scripting Basic commands (ls, cp, mv, rm, grep, awk, sed, etc.) User management, permissions, process management Bash scripting &…

Saurabh Khan February 22, 2025

DOCKER

What is Docker Host Security?

Introduction As containerization continues to revolutionize software development and deployment, Docker has emerged as one of the most popular tools for building, shipping, and running applications inside lightweight containers. However,…

Saurabh Khan February 21, 2025

DOCKER

How to Create a Local Repository in Docker and Push & Pull Images

Introduction Docker enables developers to create, manage, and deploy containers efficiently. When working in a team or developing in an isolated environment, using a local Docker repository helps store, share,…

Saurabh Khan February 21, 2025

DevOps

How to Delete a Git Branch Both Locally and Remotely

Deleting a Git branch is usually straightforward. In this article, you'll learn how to delete a Git branch both locally and remotely. TL;DR version // delete branch locally git branch…

Saurabh Khan December 3, 2024

Linux

Grep Command in Linux With Examples

The grep command is mainly used to simplify and automate text processing and data extraction tasks.System administrators and developers use grep to search log files for specific entries, find variables…

Saurabh Khan December 2, 2024

Linux

How to Remove a Directory in Linux with rm & rmdir Commands

Introduction Removing a directory in Linux is straightforward with the GUI. However, if the GUI isn't available, you can also delete directories using terminal commands. This tutorial will guide you…

Saurabh Khan November 29, 2024