added day 6 tasks

Author: LondheShubham153

2026/day-06/README.md

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+# Day 06 – Linux Fundamentals: Read and Write Text Files
+
+## Task
+This is a **continuation of Day 05**, but much simpler.
+
+Today’s goal is to **practice basic file read/write** using only fundamental commands.
+
+You will create a small text file and practice:
+- Creating a file
+- Writing text to a file
+- Appending new lines
+- Reading the file back
+
+Keep it basic and repeatable.
+
+---
+
+## Expected Output
+By the end of today, you should have:
+
+- the new created files
+- A markdown file named:  
+  `file-io-practice.md`
+
+or
+
+- A hand written practice note (Recommended)
+
+Your note should include the commands you ran and what they did.
+
+---
+
+## Guidelines
+Follow these rules while creating your practice note:
+
+- Create a file named `notes.txt`
+- Write 3 lines into the file using **redirection** (`>` and `>>`)
+- Use **`cat`** to read the full file
+- Use **`head`** and **`tail`** to read parts of the file
+- Use **`tee`** once to write and display at the same time
+- Keep it short (8–12 lines total in the file)
+
+Suggested command flow:
+1. `touch notes.txt`
+2. `echo "Line 1" > notes.txt`
+3. `echo "Line 2" >> notes.txt`
+4. `echo "Line 3" | tee -a notes.txt`
+5. `cat notes.txt`
+6. `head -n 2 notes.txt`
+7. `tail -n 2 notes.txt`
+
+---
+
+## Resources
+Use these docs to understand the commands:
+
+- `touch` (create an empty file) 
+- `cat` (read full file) 
+- `head` and `tail` (read parts of a file) 
+- `tee` (write and display at the same time)
+
+---
+
+## Why This Matters for DevOps
+Reading and writing files is a daily task in DevOps.
+
+Logs, configs, and scripts are all text files.  
+If you can handle files quickly, you can debug and automate faster.
+
+---
+
+## Submission
+1. Fork this `90DaysOfDevOps` repository  
+2. Navigate to the `2026/day-06/` folder  
+3. Add your `file-io-practice.md` file  
+4. Commit and push your changes to your fork  
+
+---
+
+## Learn in Public
+Share your Day 06 progress on LinkedIn:
+
+- Post 2–3 lines on what you learned about file read/write
+- Share one command you will use often
+- Optional: screenshot of your notes
+
+Use hashtags:  
+#90DaysOfDevOps  
+#DevOpsKaJosh  
+#TrainWithShubham
+
+Happy Learning  
+**TrainWithShubham**