chore: update day 2 task

2026/day-02/README.md

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+# Day 02 – Linux Architecture, Processes, and systemd
+
+## Task
+Today’s goal is to **understand how Linux works under the hood**.
+
+You will create a short note that explains:
+- The core components of Linux (kernel, user space, init/systemd)
+- How processes are created and managed
+- What systemd does and why it matters
+
+This is the foundation for all troubleshooting you will do as a DevOps engineer.
+
+---
+
+## Expected Output
+By the end of today, you should have:
+
+- A markdown file named:  
+  `linux-architecture-notes.md`
+
+or
+
+- A hand written set of notes (Recommended)
+
+Your notes should be clear enough that someone new to Linux can follow them.
+
+---
+
+## Guidelines
+Follow these rules while creating your notes:
+
+- Explain **process states** (running, sleeping, zombie, etc.)
+- List **5 commands** you would use daily
+- Keep it **short and practical** (under 1 page)
+- Use bullet points and short headings
+
+---
+
+## Resources
+You may refer to:
+
+- Linux `man` pages (`ps`, `top`, `systemctl`)
+- Official systemd docs
+- Your class notes
+
+Avoid copying/pasting AI Generated content.
+Focus on understanding.
+
+---
+
+## Why This Matters for DevOps
+Linux is the base OS for almost every production system.
+
+If you know how processes and systemd work, you can:
+- Debug crashed services faster
+- Fix CPU/memory issues
+- Understand logs and service restarts confidently
+
+This knowledge saves hours during incidents.
+
+---
+
+## Submission
+1. Fork this `90DaysOfDevOps` repository  
+2. Navigate to the `2026/day-02/` folder  
+3. Add your `linux-architecture-notes.md` file  
+4. Commit and push your changes to your fork  
+
+---
+
+## Learn in Public
+Share your Day 02 progress on LinkedIn:
+
+- Post 2–3 lines on what you learned about Linux internals
+- Share one systemd command you found useful
+- Optional: screenshot of your notes
+
+Use hashtags:
+#90DaysOfDevOps
+#DevOpsKaJosh
+#TrainWithShubham
+
+
+Happy Learning  
+**TrainWithShubham**