Linux File Paths Every DevOps Engineer Must Know

🚀 Linux Roadmap for DevOps Engineers – From Beginner to Intermediate Sharing a structured roadmap covering the essential Linux skills every DevOps Engineer should master. This roadmap helps you build a strong foundation step-by-step: 🔹 Step 1: Linux Basics • Linux Commands • File Permissions • Viewing Files • System Navigation 🔹 Step 2: Command Line Skills • Text Processing (grep, awk, sed) • Package Management • Process Monitoring • Disk Usage 🔹 Step 3: Shell Scripting • Bash Scripting • Automation • Loops & Conditions • Deployment Scripts 🔹 Step 4: System Administration • User Management • SSH & Cron Jobs • Log Monitoring • Server Configuration 🔹 Step 5: DevOps-Focused Skills • Docker & Networking • File Systems • Security & Permissions • Production Environments 💡 Pro Tip: Practice daily using Linux VMs or Cloud Servers 👉 Learn → Script → Deploy → Repeat A strong Linux foundation is critical for working with: ✔ CI/CD Pipelines ✔ Containers (Docker/Kubernetes) ✔ Cloud Platforms (AWS/Azure/GCP) ✔ Production Infrastructure #Linux #DevOps #Cloud #Automation #Scripting #Learning #CareerGrowth

If you want to become a DevOps engineer in 2026… Start with Linux. Here’s the exact roadmap: 1️⃣ Basics ✔ File system (ls, cd, pwd) ✔ Navigation ✔ File operations 2️⃣ Permissions ✔ chmod ✔ chown ✔ User & group management 3️⃣ Process Management ✔ ps, top ✔ kill ✔ Background jobs 4️⃣ Networking ✔ ping ✔ curl ✔ netstat / ss 5️⃣ Package Management ✔ apt / yum ✔ Install & manage software 6️⃣ Logs & Debugging ✔ tail -f ✔ journalctl ✔ dmesg 7️⃣ Scripting ✔ Bash basics ✔ Automate tasks Simple rule: 👉 Don’t skip steps 👉 Practice daily Most people jump to Docker/Kubernetes… And struggle. Because they skipped Linux. If you build strong Linux fundamentals, DevOps becomes easy. Save this roadmap. Follow me if you want real DevOps skills (not tutorial knowledge). #Linux #DevOps #CloudComputing #CareerGrowth #Roadmap

🐧 I just open-sourced 100 Linux DevOps Challenges — with full explanations & examples! If you're breaking into DevOps, preparing for certifications, or want to sharpen your Linux skills — I built this for you. Here's what makes it different: Most resources give you commands. This gives you the WHY behind every command — with real-world examples, common pitfalls, and best practices. 📂 87+ challenges published so far, covering: 🔹 File & directory management 🔹 User, group & permission management 🔹 SSH configuration & hardening 🔹 Firewall setup with firewalld & UFW 🔹 System monitoring (CPU, memory, disk, load) 🔹 Log analysis & journalctl mastery 🔹 Process debugging & zombie processes 🔹 Application crash investigation 🔹 Network troubleshooting & packet capture 🔹 Security auditing & unauthorized access detection 🔹 Disk space recovery & full disk scenarios 🔹 DNS debugging & slow system diagnosis Who is this for? 👉 Beginners learning Linux for the first time 👉 Developers moving into DevOps/SRE roles 👉 Sysadmins preparing for RHCSA / LFCS / CKA 👉 Anyone who Googles Linux commands daily and wants to stop 🔗 GitHub: https://lnkd.in/gmyeJNTB ⭐ Star the repo — it helps others discover it ♻️ Repost — help someone land their next DevOps / SRE / Platform roles #Linux #DevOps #SysAdmin #OpenSource #Bash #ShellScripting #CloudComputing #SRE #RHCSA #LearningInPublic #100DaysOfCode #GitHub #SRE #100Days #eknathareddyp #GIT #interview #Learn

🚀 Mastering Linux File Permissions (A Must for DevOps Engineers) If you're working with Linux, understanding file permissions is non-negotiable. It’s one of those core concepts that directly impacts security, access control, and system stability. 🔑 Here’s a quick breakdown: 📌 Permissions Types - r (read) → View file content - w (write) → Modify file - x (execute) → Run file/script 📌 Who gets permissions? - User (owner) - Group - Others 📌 Numeric (Octal) Representation - 4 = Read - 2 = Write - 1 = Execute 👉 Add them to define permissions: - 7 = rwx (4+2+1) - 6 = rw- (4+2+0) - 5 = r-x (4+0+1) 💡 Example: "rwxrw-r-x" → 765 - User → rwx (7) - Group → rw- (6) - Others → r-x (5) 📌 Why it matters in DevOps? - Securing servers & applications 🔐 - Managing access in production environments - Preventing unauthorized changes If you're learning DevOps, get comfortable with commands like: "chmod", "chown", and "ls -l" 🔥 Tip: Practice by creating files and changing permissions yourself — that’s the fastest way to learn. #Linux #DevOps #Cloud #Learning #SysAdmin #BeginnerFriendly

🚀 Just published a new blog on Medium! As a DevOps engineer, one thing you quickly realize — everything starts with the Linux terminal. I’ve put together a list of essential Linux commands every DevOps engineer must know 💻🐧 From basic navigation to real-time troubleshooting, these commands are your daily toolkit when working with servers, CI/CD pipelines, and cloud environments. 👉 In this blog, I covered: • File & directory operations • System monitoring commands • Networking basics • Log analysis & troubleshooting These are not just commands — they are your lifesavers in production ⚡ If you’re preparing for DevOps roles or working in real-time environments, this will definitely help you build strong fundamentals. 🔗 Read here: https://lnkd.in/gGwVvFPM #DevOps #Linux #CloudComputing #AWS #SRE #Automation #TechCareer #Learning #MediumBlog

#Day3 Essential Linux Commands Every DevOps Engineer Must Know 🚀 The command line is the backbone of every DevOps workflow. Today I covered 15 must-know Linux commands — grouped by category for clarity! 📁 Navigation 🔹 pwd — Print current working directory 🔹 ls — List files in current directory 🔹 ls -l — Detailed list with permissions & size 🔹 ls -la — Show hidden files with full details 🔹 uname — Display system & kernel information 🗂️ File Operations 🔹 touch — Create a new empty file 🔹 mkdir — Create a new directory 🔹 rmdir — Remove an empty directory 🔹 rm -r — Recursively delete files & directories 🔹 --help — Deep dive into any command's usage 👁️ View & Move 🔹 cat — Display file contents in terminal 🔹 mv — Move or rename files & directories 🔹 cp — Copy files or directories 🌐 Search & Network 🔹 grep — Search patterns inside files 🔹 curl — Transfer data from URLs / APIs 🔹 wget — Download files from the internet 💡 Pro Tip: Combine grep with pipes — cat file.log | grep "error" — to instantly filter large files like a pro! 💡 Key Takeaway: These 15 commands are the foundation of every DevOps workflow. Master them and you'll navigate, manage, and automate any Linux server with speed and confidence. #DevOps #Linux #LinuxCommands #Bash #SysAdmin #CloudEngineering #LearningInPublic #CareerGrowth

Hey DevOps Enthusiasts! Today, I attended a technical interview for a Linux Administrator / DevOps role, and it turned out to be a great learning experience. The discussion focused on core Linux and DevOps fundamentals along with some real-world implementation scenarios. I wanted to share the key topics that were covered during the interview — these may help others preparing for similar roles. 🔹 Topics Covered in the Interview: 1. What is Docker? 2. Tell me 20 Linux commands 3. Write a basic Shell script 4. What is Nginx? How do we access a particular file in the browser? 5. What is the default port number of Nginx? 6. How do we access Nginx content on port 81? 7. How do we check open ports in Linux systems? 8. How can we change the ownership of a file? 9. How can you transer file from remote to local and local to remote? 10. What is default path of nginx ? These questions focused on core DevOps and Linux administration concepts, testing both theoretical knowledge and hands-on experience in areas like: Linux Administration Shell Scripting Web Servers (Nginx) Networking & Ports Containers (Docker) Basic Troubleshooting #DevOps #Linux #DevOpsEngineer #AWS #Docker #Kubernetes #Terraform #CloudComputing #InfrastructureAsCode #DevOpsInterview #LearningJourney #CareerGrowth #LinuxAdministrator #TechInterview

🚀 Day 13: Linux Internals for DevOps Engineers (Advanced) 👉 Debugging APIs & Services Like a Real Engineer Earlier, I learned how to check if a service is running. Today, I went one level deeper: 👉 Understanding HOW the service responds. 📌 What I explored: 🔹 curl -v to see full request/response flow 🔹 Sending POST requests using curl 🔹 Using netcat (nc) to test ports and simulate connections 🔹 Manually sending HTTP requests (raw debugging) 💡 Real Scenario: Frontend is not working… But is the problem in frontend or backend? 👉 Using curl -v, I saw a 500 Internal Server Error Now I know: ✔ Backend issue ✔ Not a network problem This kind of debugging saves hours. 🧠 Question for you: Have you ever used curl to debug an API issue? What did you find? 👇 Let’s discuss! 🎯 Learning Goal: To move from basic checks → deep debugging of services and APIs. 📅 Day 14 Tomorrow: HTTP/HTTPS Deep Dive (Headers, Status Codes, SSL) Let’s keep going deeper 🚀 #DevOps #Linux #Networking #APIDebugging #SRE #CloudComputing #SoftwareEngineering #TechLearning #LearningInPublic #ITCareers #EngineeringMindset #CareerGrowth

🚀 Linux Roadmap for DevOps Engineers – From Beginner to Intermediate Sharing a structured visual roadmap covering essential Linux skills every DevOps Engineer should master. This roadmap guides you step-by-step: 🔹 Step 1: Linux Basics (Linux Commands, File Permissions, Viewing Files, System Navigation) 🔹 Step 2: Command Line Skills (Text Processing, Package Management, Process Monitoring, Disk Usage) 🔹 Step 3: Shell Scripting (Bash Scripting, Automation, Loops & Conditions, Deploy Scripts) 🔹 Step 4: System Administration (User Management, SSH & Cron Jobs, Log Monitoring, Server Configuration) 🔹 Step 5: DevOps-Focused Skills (Docker & Networking, File Systems, Security & Permissions, Production Environments) 💡 Practice daily on Linux using VMs or Cloud Servers. Learn → Script → Deploy → Repeat. A strong foundation in Linux is critical for working with CI/CD pipelines, containers, cloud platforms, and production infrastructure. #Linux #DevOps #CloudEngineering #SystemAdmin #Automation #Docker #Learning #Tech

Linux commands every DevOps Engineer should know 🐧 Not theory. Not a tutorial. These are commands I actually use daily. ✅ Save this — you’ll thank yourself later 🔖 🖥️ File & Directory • ls -la → list all files (incl hidden) • cd - → go back to previous dir • mkdir -p → create nested dirs • rm -rf → delete folder (careful ⚠️) 🔍 Logs & Debugging (most important 👀) • tail -f app.log → live logs • grep "error" → find issues quickly • less app.log → scroll large files ⚙️ Process & Services • ps aux → check processes • top / htop → resource usage • systemctl status → service health • kill -9 → stop process 🌐 Networking • curl → test APIs • ping → check connectivity • ss -tulnp → open ports 📦 System & Disk • df -h → disk usage • du -sh * → folder sizes • free -m → memory usage After 4+ years in DevOps, I can say this: These aren’t “nice to know” commands. These are the ones you reach for when production breaks. Debugging? → tail + grep Disk issue? → df + du Service down? → systemctl Master these, and Linux stops feeling scary. What’s one command you use daily? 👇 #DevOps #Linux #SRE #CloudComputing #AWS #Engineering