From 8db5c1b0b6f93ba81b2db6a43e4157f57e5d02aa Mon Sep 17 00:00:00 2001
From: Asha Mule <patilasha080@gmail.com>
Date: Fri, 3 Jul 2026 17:21:18 +0530
Subject: [PATCH] Create linux-commands-cheatsheet.md with command list

Added a comprehensive Linux commands cheat sheet covering process management, file system commands, and networking troubleshooting.
---
 2026/day-03/README.md                    | 82 ------------------------
 2026/day-03/linux-commands-cheatsheet.md | 51 +++++++++++++++
 2 files changed, 51 insertions(+), 82 deletions(-)
 delete mode 100644 2026/day-03/README.md
 create mode 100644 2026/day-03/linux-commands-cheatsheet.md

diff --git a/2026/day-03/README.md b/2026/day-03/README.md
deleted file mode 100644
index 5ccf2ccc98..0000000000
--- a/2026/day-03/README.md
+++ /dev/null
@@ -1,82 +0,0 @@
-# Day 03 – Linux Commands Practice
-
-## Task
-Today’s goal is to **build your Linux command confidence**.
-
-You will create a cheat sheet of commands focused on:
-- Process management
-- File system
-- Networking troubleshooting
-
-This is the command toolkit you will reuse for years.
-
----
-
-## Expected Output
-By the end of today, you should have:
-
-- A markdown file named:  
-  `linux-commands-cheatsheet.md`
-
-or
-
-- A hand written cheat sheet (Recommended)
-
-Your cheat sheet should be easy to scan during real troubleshooting.
-
----
-
-## Guidelines
-Follow these rules while creating your cheat sheet:
-
-- Include **at least 20 commands** with one‑line usage notes
-- Add **3 networking commands** (`ping`, `ip addr`, `dig`, `curl`, etc.)
-- Group commands by category
-- Keep it concise and readable
-
----
-
-## Resources
-You may refer to:
-
-- Linux `man` pages
-- Your class notes
-- Reliable Linux command references
-
-Don’t copy long lists. Focus on commands you understand.
-
----
-
-## Why This Matters for DevOps
-Real production issues are solved at the command line.
-
-The faster you can inspect logs and network issues, the faster you can:
-- Restore service
-- Reduce downtime
-- Gain trust as an operator
-
----
-
-## Submission
-1. Fork this `90DaysOfDevOps` repository  
-2. Navigate to the `2026/day-03/` folder  
-3. Add your `linux-commands-cheatsheet.md` file  
-4. Commit and push your changes to your fork  
-
----
-
-## Learn in Public
-Share your Day 03 progress on LinkedIn:
-
-- Post 2–3 lines on your favorite Linux commands
-- Share one log command and one networking command
-- Optional: screenshot of your cheat sheet
-
-Use hashtags:
-#90DaysOfDevOps
-#DevOpsKaJosh
-#TrainWithShubham
-
-
-Happy Learning  
-**TrainWithShubham**
\ No newline at end of file
diff --git a/2026/day-03/linux-commands-cheatsheet.md b/2026/day-03/linux-commands-cheatsheet.md
new file mode 100644
index 0000000000..4e5288995e
--- /dev/null
+++ b/2026/day-03/linux-commands-cheatsheet.md
@@ -0,0 +1,51 @@
+# Day 03 – Linux Commands Practice
+
+## Task
+Today’s goal is to **build your Linux command confidence**.
+
+Process Management
+ps - Display running processes 
+ps -ef - Show all running processes 
+top - Monitor system processes in real time 
+htop - Interactive process viewer 
+kill PID - Terminate a process by PID 
+kill -9 PID - Forcefully terminate a process 
+pkill process_name - Kill process by name 
+jobs - List background jobs 
+bg - Resume a job in the background 
+fg - Bring a background job to the foreground
+
+
+- File system
+pwd - Print current working directory  
+ls - List files and directories 
+ls -la - List all files including hidden files 
+cd directory - Change directory
+mkdir folder - Create a directory 
+touch file.txt - Create a new file 
+cp source destination - Copy files 
+mv source destination - Move or rename files 
+rm file.txt - Delete a file 
+rm -r folder - Delete a directory recursively 
+cat file.txt - Display file contents 
+nano file.txt - Edit a file 
+find . -name file.txt - Search for a file 
+df -h - Show disk usage 
+du -sh * - Show directory sizes 
+
+
+- Networking troubleshooting
+
+ip addr - Display IP addresses 
+hostname -I - Show local IP address 
+ping google.com - Test network connectivity 
+curl https://example.com - Test HTTP connectivity 
+wget URL - Download a file 
+ssh user@host - Connect to a remote server 
+ss -tuln - Display listening ports 
+netstat -tuln - Show network connections (if installed) 
+traceroute google.com - Trace network path  
+dig google.com - Query DNS information 
+
+
+