HDHemant Dhavalein90daysofdevops-hemantdhavale-day-10.hashnode.devDay 10 – Understanding File Permissions & Operations in LinuxOn Day 10 of my 90 Days of DevOps journey, I practiced file creation and permissions in Linux. This topic looks simple at first, but it controls everything in a system. Creating Files I created three files: devops.txt using touch notes.txt using ec...4d ago·2 min read
HDHemant Dhavalein90daysofdevops-hemantdhavale-day-9.hashnode.devDay 09 – Linux User & Group Management (Hands-On Challenge)On Day 09 of my 90 Days of DevOps journey, I practiced something very practical — managing users and groups in Linux. This is something every DevOps engineer deals with in real servers. Creating Users I created four users: tokyo berlin professor ...5d ago·2 min read
HDHemant Dhavalein90daysofdevops-hemantdhavale-day-8.hashnode.devDay 08 – Deploying My First Cloud Server with NginxToday was one of the most exciting days in my 90 Days of DevOps journey. For the first time, I deployed a real web server on the cloud. Step 1: Launch Cloud Instance I created an EC2 instance on AWS Free Tier. After generating a key pair, I connected...6d ago·2 min read
HDHemant Dhavalein90daysofdevops-hemantdhavale-day-7.hashnode.devDay 07 – Linux File System Hierarchy & Real-World ScenariosOn Day 07 of my 90 Days of DevOps journey, I focused on understanding where things live in Linux and how to approach real troubleshooting scenarios. Earlier, I used commands.Today, I understood context. Understanding Important Directories Here are th...Feb 14·2 min read
RRahulindevopswithrahulsharma.hashnode.dev(Day 2-7) - Linux Fundamentals for DevOps Engineers: Architecture, File System & Essential CommandsLinux Linux is an open-source operating system (OS) based on Unix principles. It acts as a bridge between computer hardware and software applications, managing system resources like CPU, memory, storage, and devices. It was originally created in 1991...Feb 14·11 min read
HDHemant Dhavalein90daysofdevops-hemantdhavale-day-6.hashnode.devDay 06 – Linux Fundamentals: Read and Write Text FilesOn Day 06 of my 90 Days of DevOps journey, I practiced something very basic but very important — file read and write operations. At first, it feels simple. But in real DevOps work, most things revolve around text files: Logs Configuration files Sc...Feb 14·2 min read
RRahulindevopswithrahulsharma.hashnode.devDay 01 – Introduction to DevOpsDevOps is a combination of development and operation team to deliver the software faster. DevOps is not a tool, technology or framework. It is a software engineer methodology which aims to release the applications very speedily. In software domain we...Feb 13·3 min read
SMShashank Malviyainlearnsharegrow.hashnode.devLinux Day 04 – 90DaysOfDevOpsTopic: Processes & Services (systemd) 🔹 Processes (What is running?) Important Commands ps -ef → Snapshot of all running processes pgrep <name> → Find PID of a process top → Live CPU & memory usage htop → (If installed) better interactive top ...Feb 13·2 min read
HDHemant Dhavalein90daysofdevops-hemantdhavale-day-5.hashnode.devDay 05 – Linux Troubleshooting Drill (CPU, Memory & Logs)On Day 05 of my 90 Days of DevOps journey, I performed a small troubleshooting drill on my system. Instead of waiting for a real incident, I simulated one and followed a structured approach. Target Service: ssh I chose the ssh service for this drill ...Feb 13·2 min read
HDHemant Dhavalein90daysofdevops-hemantdhavale-day-4.hashnode.devDay 04 – Linux Practice: Processes and Services (Hands-On)On Day 04 of my 90 Days of DevOps journey, I focused completely on practical Linux commands. Today was not about theory.It was about actually running commands and observing outputs. Process Checks First, I checked what processes are running on my sys...Feb 11·2 min read
