solution

2026/day-01/README.md

@@ -96,4 +96,4 @@ Use hashtags:
 
 
 Happy Learning  
-**TrainWithShubham**
+**TrainWithShubham**

2026/day-01/learning-plan.md

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+ #This is my learning plan for 90 day Devops
+# My 90 Days DevOps Learning Plan
+
+## What is My Understanding of DevOps and Cloud Engineering?
+
+DevOps is a culture and practice that combines Development and Operations to improve software delivery, automation, monitoring, and collaboration between teams. It helps organizations deliver applications faster and more reliably.
+
+Cloud Engineering is the process of designing, managing, and deploying applications and infrastructure on cloud platforms like AWS, Azure, and Google Cloud. It provides scalability, flexibility, and cost-effective infrastructure management.
+
+---
+
+## Why I Am Starting Learning DevOps & Cloud?
+
+I am starting to learn DevOps and Cloud because I want to build strong skills in automation, infrastructure management, deployment, and modern software delivery practices.
+
+I also want to improve my Linux, Git, Docker, Kubernetes, Terraform, and AWS skills to grow my career in the IT industry and become a skilled DevOps Engineer.
+
+---
+
+## Where Do I Want to Reach?
+
+My goal is to become a professional DevOps and Cloud Engineer to get the better job and also who can:
+
+- Manage cloud infrastructure
+- Build CI/CD pipelines
+- Work with Docker and Kubernetes
+- Automate deployments using Terraform and scripting
+- Monitor and maintain production systems
+- Work confidently with Linux and cloud platforms
+
+I want to work on real-world DevOps projects and continuously improve my technical skills.
+
+---
+
+## How I Will Stay Consistent Every Single Day?
+
+I will stay consistent by:
+
+- Practicing DevOps daily
+- Completing day-wise tasks regularly
+- Revising Linux and Git commands
+- Building small hands-on projects
+- Maintaining notes and documentation
+- Staying disciplined and focused on my learning goals
+
+I will dedicate time every day to learning and practicing DevOps concepts step by step.

2026/day-02/Linux-architecture-note.md

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+# Day 2 of linux learning
+
+# Linux Architecture Notes
+
+## Introduction
+
+Linux is an operating system that manages:
+- Hardware
+- Memory
+- Processes
+- Applications
+- Networking
+
+Linux acts as a bridge between software and hardware.
+
+---
+
+# Core Components of Linux
+
+Linux mainly consists of:
+
+1. Kernel
+2. User Space
+3. Init/systemd
+
+---
+
+# 1. Kernel
+
+The kernel is the core part of Linux.
+
+It directly communicates with hardware and manages system resources.
+
+## Responsibilities of Kernel
+
+- Process management
+- Memory management
+- Device management
+- File system management
+- Networking
+- Security
+
+## Example
+
+When we open a browser:
+- Kernel allocates memory
+- Gives CPU time
+- Accesses disk
+- Uses network hardware
+
+Without the kernel, applications cannot communicate with hardware.
+
+---
+
+# 2. User Space
+
+User space is where applications run.
+
+Examples:
+- Bash
+- Docker
+- VS Code
+- Nginx
+- Chrome
+
+Applications use system calls to communicate with the kernel.
+
+# 3. Init/systemd
+
+After Linux boots:
+- Kernel starts the first process
+
+That process is:
+bash
+systemd
+
+Its PID is:
+bash
+PID 1
+
+Check using:
+bash
+ps -p 1
+
+
+# What systemd Does
+
+systemd is responsible for:
+- Starting services
+- Managing background processes
+- Restarting failed services
+- Boot management
+- Logging
+- Monitoring services
+
+## Why systemd Matters
+
+systemd helps DevOps engineers:
+- Manage servers
+- Troubleshoot applications
+- Restart crashed services
+- Monitor system health
+
+
+# Process Management
+
+Linux manages processes using Process IDs (PID).
+
+Each running program gets:
+- CPU time
+- Memory
+- System resources
+
+Linux can:
+- Start processes
+- Stop processes
+- Pause processes
+- Restart processes
+
+Every process has a unique PID (Process ID).
+
+
+## Running State
+The process is actively using CPU resources.
+
+## Sleeping State
+The process is waiting for input/output operations or resources.
+
+## Stopped State
+The process is paused manually or by system signals.
+
+## Zombie State
+The process has completed execution but still exists in the process table until the parent process reads its exit status.
+
+
+# Daily Linux Commands
+
+## 1. View Running Processes
+bash
+ps aux
+
+## 2. Real-Time Process Monitoring
+bash
+top
+
+
+## 3. Check Service Status
+bash
+systemctl status nginx
+
+
+## 4. View System Logs
+bash
+journalctl -xe
+
+
+## 5. Kill a Process
+bash
+kill PID
+
+
+# Summary
+
+- Kernel is the heart of Linux
+- User space runs applications
+- systemd manages services and boot process
+- Linux manages processes using PID
+- Process states help understand system behavior
+- Linux commands are important for daily troubleshooting
+- Linux knowledge is essential for DevOps engineers

2026/day-03/linux-command-cheatsheet.md

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+# Day 03 of linux practice 
+# Linux Commands Cheat Sheet
+
+Simple and useful Linux commands for daily practice.
+
+
+# File System Commands
+
+`pwd`  
+Show current directory location.
+
+`ls`  
+List files and folders.
+
+`ls -la`  
+Show all files with permissions.
+
+`cd folder_name`  
+Move into a folder.
+
+`cd ..`  
+Go back one directory.
+
+`mkdir demo`  
+Create a new folder.
+
+`touch file.txt`  
+Create a new file.
+
+`cp file1.txt file2.txt`  
+Copy a file.
+
+`mv old.txt new.txt`  
+Rename or move a file.
+
+`rm file.txt`  
+Delete a file.
+
+`rm -r folder_name`  
+Delete a folder recursively.
+
+`cat file.txt`  
+View file content.
+
+`nano file.txt`  
+Open file in nano editor.
+
+`vim file.txt`  
+Open file in vim editor.
+
+`find . -name file.txt`  
+Search file in current directory.
+
+`chmod 400 key.pem`  
+Change file permissions.
+
+`df -h`  
+Check disk space.
+
+`du -sh folder_name`  
+Check folder size.
+
+
+#  Process Management Commands
+
+`ps aux`  
+Show running processes.
+
+`top`  
+Monitor live running processes.
+
+`htop`  
+Interactive process viewer.
+
+`kill PID`  
+Stop a process using process ID.
+
+`kill -9 PID`  
+Force stop a process.
+
+`jobs`  
+Show background jobs.
+
+`bg`  
+Run process in background.
+
+`fg`  
+Bring background process to foreground.
+
+`nohup command &`  
+Run process after logout.
+
+`free -h`  
+Check RAM usage.
+
+`uptime`  
+Show system uptime.
+
+
+#  Networking Commands
+
+`ping google.com`  
+Check internet connectivity.
+
+`ip addr`  
+Show IP address details.
+
+`curl https://example.com`  
+Fetch website response.
+
+`dig google.com`  
+Check DNS information.
+
+`netstat -tulnp`  
+Show open ports.
+
+`ss -tulnp`  
+Display listening ports.
+
+`traceroute google.com`  
+Trace network route.
+
+`wget URL`  
+Download file from internet.
+
+
+#  User & Permission Commands
+
+`whoami`  
+Show current logged-in user.
+
+`sudo command`  
+Run command as administrator.
+
+`passwd`  
+Change user password.
+
+`id`  
+Show user ID and group ID.
+
+
+#  Package Management Commands
+
+`sudo apt update`  
+Update package list.
+
+`sudo apt upgrade`  
+Upgrade installed packages.
+
+`sudo apt install nginx`  
+Install a package.
+
+`sudo apt remove nginx`  
+Remove a package.
+
+