Mastering Linux for Cloud & DevOps with Exlearn Technologies

💻 Linux is not just an OS — it’s the backbone of modern DevOps. As I continue my journey toward becoming a Cloud Support Engineer, I’ve realized one thing: 👉 If you want to master DevOps, you MUST master Linux. From managing servers on AWS EC2 to troubleshooting real-time production issues, Linux skills are everywhere. 🔧 Some fundamentals I’ve been strengthening: - File system navigation (ls, cd, pwd) - Permissions & ownership (chmod, chown) - Process management (ps, top, kill) - Package installation & updates - Basic shell scripting for automation 📌 What surprised me the most? Linux is not about memorizing commands — it’s about understanding how systems actually work. Every command tells a story of how the system behaves. 🚀 My goal: To build strong Linux fundamentals that support automation, cloud operations, and scalable infrastructure. If you’re starting DevOps, don’t skip Linux. It’s your foundation. #Linux #DevOps #CloudComputing #AWS #LearningJourney #CloudEngineer #ITSkills

🚀 Day 1 of Strengthening My Linux Foundations Today I focused on deepening my understanding of Linux - one of the most critical skills for any Cloud/DevOps Engineer. I covered the fundamentals, starting with accessing remote Linux systems using SSH (via terminal and PuTTY), which is a core skill when working with cloud servers like AWS EC2. From there, I explored the Linux file system structure and gained clarity on how directories like /home, /etc, /var, and /usr are organized and used in real-world environments. I also spent time getting comfortable with the command line: Understanding the Linux prompt and navigation Managing processes and regaining control of the terminal Working with file and directory permissions using ls -l One area I found particularly interesting was learning the difference between absolute vs relative paths and how they impact efficiency when navigating systems. I also practiced: ✔️ Using wildcards for pattern matching ✔️ Creating and managing directories ✔️ Copying files and folders ✔️ Finding files using the find command ✔️ Understanding soft links vs hard links This might seem basic, but these are the exact skills that power everything behind the scenes - from CI/CD pipelines to container orchestration and cloud infrastructure. 💡 Key takeaway: Mastering Linux is not optional in DevOps - it’s foundational. This is just the beginning, and I’m committed to building consistently and sharing the journey. #Linux #DevOps #CloudComputing #AWS #LearningInPublic #TechJourney #CloudEngineer

Mastering the basics is what builds strong foundations. Linux commands are not just tools—they’re the backbone of every DevOps and Cloud Engineer’s daily work. From managing files to troubleshooting systems, these commands help us work faster, smarter, and more efficiently. Consistency in learning and practice is the key. 🚀 #Linux #DevOps #CloudComputing #Automation #Learning

Everyone says “Learn Linux for DevOps” — but why does it matter so much? Because Linux is behind almost everything you do in DevOps, whether you notice it or not. Here’s where it really comes into play: 1️⃣ Running Containers and Kubernetes → Docker and Kubernetes rely on Linux features like namespaces and cgroups. → Most container hosts and cluster nodes run on Linux. 2️⃣ Managing Cloud Servers → AWS EC2, Azure, and GCP VMs are mostly Linux-based. → You’ll use Linux for SSH access, updates, monitoring, and troubleshooting. 3️⃣ CI/CD Pipelines → Build agents commonly run on Linux. → Most automation scripts execute in a Linux shell environment. 4️⃣ Infrastructure as Code (IaC) → Tools like Terraform, Ansible, and Pulumi are often used on Linux systems. → Troubleshooting usually means working with Linux commands. 5️⃣ Monitoring and Logs → Checking processes, logs, CPU, and memory happens through Linux commands. → Tools like Prometheus and Grafana typically run as Linux services. 6️⃣ Security and Access → File permissions, user management, and SSH keys are core Linux concepts. → Critical for securing systems and resolving access issues. Focus on the Linux commands you actually use. Don’t just memorize them — understand how they help you solve real problems. → In interviews, no one expects you to remember every command. → They want to see how you troubleshoot and think when something breaks. → Keep practicing — it gets easier step by step. What’s the one Linux command you use almost every day in DevOps? #Linux #DevOps #AWS #Kubernetes #Azure

🚀 #100DaysOfDevOps – 👉 Day 6: Linux Journey 🐧 Today, It was all about directory navigation, file handling, and command-line productivity. Here’s what I learned 👇 📁 Directory Navigation • cd foldername – Move into a directory • cd - – Switch to previous directory • cd ../ – Go one level back • cd ../../ – Go two levels back 📂 Directory Management • mkdir folder1/folder2 – Create nested directories • mkdir -p aws/azure/gcp/ccit – Create multiple levels at once • ll foldername – View files inside a directory • touch folder/file.txt – Create file inside a folder 📄 File Reading & Editing • cat filename – View file content • cat -n filename – View with line numbers • cat > filename – Overwrite content • cat >> filename – Append content 🔍 Viewing File Content Efficiently • head → First lines of a file • tail → Last lines of a file • sed → View specific lines (powerful for filtering data) 💡 Terminal Productivity Tips • Press Tab → Auto-complete commands • Press ↑ → Reuse previous commands • Ctrl + U → Clear entire line • Ctrl + A / E → Jump to start/end ✨ Key Takeaway: Mastering these basic Linux commands is essential for working in DevOps, Cloud, and Automation environments, since most real-world systems run on Linux. Learning step by step, improving every day 💪 #Linux #DevOps #CloudComputing #AWS #LearningJourney #TechSkills #100DaysOfDevOps

🔥 𝐒𝐭𝐨𝐩 𝐆𝐨𝐨𝐠𝐥𝐢𝐧𝐠 𝐋𝐢𝐧𝐮𝐱 𝐂𝐨𝐦𝐦𝐚𝐧𝐝𝐬 𝐄𝐯𝐞𝐫𝐲 𝐓𝐢𝐦𝐞! If you're serious about becoming a DevOps Engineer / Cloud Engineer, mastering Linux is NON-NEGOTIABLE. Here are some of the most used Linux commands every engineer should know 👇 📌 ls – List directory contents 📌 cd – Navigate between directories 📌 pwd – Show current directory 📌 mkdir – Create directories 📌 rm – Remove files/directories 📌 cp – Copy files 📌 mv – Move/rename files 📌 chmod – Change permissions 📌 chown – Change ownership 📌 top – Monitor system processes 📌 df -h – Check disk usage 📌 free -m – Check memory usage 💡 Pro Tip: Don’t just memorize — use these daily in your projects, labs, or cloud environments (AWS EC2, Docker containers, etc.) 🚀 If you're learning Linux, SAVE this post for later — it will help you a lot! #Linux #DevOps #CloudComputing #AWS #LinuxCommands #SysAdmin #DevOpsEngineer #CloudEngineer #TechLearning #100DaysOfCode #OpenSource #ITSkills #Learning #CareerGrowth

🚀 Day 4 of My Cloud & DevOps Bootcamp at Exlearn Technologies Today’s session with our mentor, Prashant Gavate, focused on one of the most essential skills for any aspiring Cloud & DevOps engineer — Linux 💻 🔍 Why Linux matters in Cloud & DevOps: • Most cloud platforms like AWS, Azure, and Google Cloud run on Linux-based systems • Offers better control, flexibility, and performance • Key DevOps tools like Docker, Kubernetes, and Jenkins are built around Linux • Powerful automation and scripting with Bash • Strong command-line skills are crucial for real-world server management 💡 Today, I explored Linux fundamentals, commands, file systems, and its role as the backbone of modern cloud infrastructure. This journey keeps getting more exciting as I move from theory to practical, real-world concepts. Looking forward to diving deeper into Linux and automation! 🔥 #Day4 #CloudComputing #DevOps #Linux #LearningJourney #ExlearnTechnologies #PrashantGavate #FutureEngineer

🚀 Real-Time Linux & EC2 Troubleshooting Session with Vikas Ratnawat CloudDevOpsHub Community CloudDevOpsHub Today’s session was highly practical and focused on real-time troubleshooting in AWS EC2 and Linux systems — one of the most important skills for any DevOps Engineer. 💡 Scenario Covered: How to access an EC2 instance without a PEM key (real-world recovery use case) 🔧 Step-by-Step Learning ✅ Step 1: Access EC2 via Instance Connect Navigated to AWS Console Selected EC2 Instance → Clicked Connect → Used EC2 Instance Connect Successfully logged into the server without PEM key ⚙️ Step 2: SSH Configuration Changes sudo su ll /etc/ssh/sshd_config vi /etc/ssh/sshd_config Updated configurations: PermitRootLogin yes PermitEmptyPasswords yes PasswordAuthentication no 👉 Learned how SSH configuration controls access and security 🔄 Step 3: Restart SSH Service systemctl stop sshd.service systemctl status sshd.service systemctl start sshd.service systemctl restart sshd.service ✔️ Understood how to manage services in Linux using systemctl 👤 Step 4: User Management cd /home/ useradd sairam ✔️ Created a new user in the system 🔐 Step 5: Set Password for User passwd sairam ✔️ Assigned password for login 🔑 Step 6: Reset Root Password passwd root ✔️ Learned how to regain root access 🔁 Step 7: Switch to Root User su ✔️ Entered root password to switch user 🛡️ Step 8: Grant Sudo Permissions cd /etc vi sudoers Added: sairam ALL=(ALL) ALL ✔️ Provided admin (sudo) access to the user 🎯 Key Takeaways 🔹 How to recover EC2 access without PEM key 🔹 Deep understanding of SSH configuration 🔹 User creation & privilege management 🔹 Real-time troubleshooting mindset 🔹 Importance of secure access control 💬 Special thanks to Vikas Ratnawat @CloudDevOpsHub for explaining concepts in a simple and practical way. 📌 This kind of hands-on learning is helping me build strong confidence in Linux & AWS for DevOps roles. #DevOps #AWS #Linux #EC2 #CloudComputing #LearningJourney #CloudDevOpsHub #VikasRatnawat #CareerGrowth

🚀 Everyone wants to start with advanced tools… But DevOps doesn’t work that way. Skipping fundamentals like Linux, networking, scripting, and CI/CD might feel fast — until things break. 💥 Then comes the real challenge: Debugging becomes harder, systems become fragile, and progress slows down. 💡 The reality: Strong engineers aren’t built on shortcuts — they’re built on foundations. Start small → understand deeply → then scale with cloud, Kubernetes, and automation. 🔥 Takeaway: The basics aren’t optional. They’re the advantage. #DevOps #CloudComputing #Kubernetes #Linux #Automation #TechCareers