Lesson 1 — Git & GitHub Journey
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•2 min read
H
Network Engineer with 3+ years of experience in infrastructure, system administration, and enterprise networking, currently transitioning into DevOps and Cloud Engineering.
Hands-on experience with Fortinet firewalls, routers, switches, Windows/Linux servers, and Hyper-V virtualization.
Currently building and learning with Docker, Kubernetes, AWS, Linux, CI/CD, GitHub Actions, and automation tools while leveraging MERN stack knowledge to understand the complete application lifecycle from development to deployment.
Passionate about cloud infrastructure, automation, containers, and modern DevOps practices. Regularly sharing my learning journey, projects, and hands-on experiments.
Lesson 1 — Git & GitHub Journey
What is Git?
Git is a version control system.
It tracks:
file changes
code history
who changed what
rollback versions
team collaboration
Think like:
Save Game System for Code
Every save point = commit.
Why Git Exists
Without Git:
project-final
project-final-v2
project-final-final
project-final-final-real
Chaos 😄 ------ Git solves this.
Install Check
Run:
git --version
Expected:
git version 2.x.x
Your First Git Project
Step 1 — Create Folder
mkdir git-course
cd git-course
Step 2 — Initialize Git
git init
Output:
Initialized empty Git repository
Now Git starts tracking this folder.
Git creates hidden folder:
.git
# Check
ls -a
This is the Git database.
Step 3 — Check Status
git status
This is the MOST used Git command.
It shows:
modified files
staged files
untracked files
Step 4 — Create File
echo "Hello Git" > app.txt
Check status again:
git status
You’ll see:
Untracked files:
app.txt
Meaning: Git sees file but not tracking yet.
Step 5 — Stage File
git add app.txt
Now check:
git status
You’ll see:
Changes to be committed
Important Concept
# Git has 3 stages:
Working Directory
↓
Staging Area
↓
Repository
Step 6 — Commit
Commit = save snapshot.
git commit -m "first commit"
If error about username/email:
git config --global user.name "Your Name"
git config --global user.email "you@example.com"
## Then retry commit.
Step 7 — View History
git log
You’ll see:
commit id
author
date
message
Example:
commit a1b2c3...
Author: Hatim
Message: first commit
