Hey DevOps enthusiasts! Welcome back to DevOps with Netra. In Week 2 of my DevOps journey, I dove deep into Shell Scripting, explored the foundations of networking, and got hands-on with Git and GitHub. This week was all about building automation skills, understanding how systems communicate, and collaborating like a pro.

Here’s a breakdown of what I learned, how I applied it, and what’s coming next!

🐚 Shell Scripting: Automate Everything

🔍 Why Learn Shell Scripting?

Shell scripting is the backbone of DevOps automation. Whether it’s setting up environments, monitoring servers, or creating backups—shell scripts can do it all with just a few lines of code.

✅ Topics Covered:

🧱 Basics

Variables, Loops, Conditionals
User input with read, script arguments like $0, $1, etc.
File redirection (>, >>, |) and command substitution

⚙️ Intermediate to Advanced

System Monitoring with CPU & memory checks
Cron Jobs for scheduled tasks
Logging and handling errors (set -x, trap)

🔐 Security & Optimization

File permissions (chmod, chown)
Secure remote access (ssh, scp)
API integration using curl and wget

🛠 Projects

AWS EC2 setup with shell scripts
Log analysis
Scripted backups and cleanup automation

✨ Key Takeaway:

Shell scripting isn’t just a skill—it’s a DevOps superpower. Writing reusable scripts saves time and reduces human error across cloud environments.

🌐 Networking Concepts for DevOps

Understanding networks is critical for managing infrastructure.

💡 What I Learned:

Networking basics: How computers and the internet communicate
OSI vs. TCP/IP models
IP addressing and subnets
DNS, firewalls, load balancers, VPCs
Tools: ping, traceroute, nslookup

🧪 Hands-On:

Created and managed AWS VPCs and Subnets
Explored VPC Peering and security groups
Simulated networking with CLI tools and visual diagrams

🔑 Key Takeaway:

A solid grasp of networking ensures your cloud applications are secure, available, and scalable.

🔧 Git & GitHub: Version Control Mastery

✍️ What I Covered:

Setting up Git locally and creating GitHub repositories
Using git init, add, commit, push, pull
Branching strategies and merge conflicts
Working collaboratively with pull requests & code reviews
Exploring GitHub Actions for CI/CD automation

🤝 Real-World Practice:

Forked and cloned repositories
Managed feature branches and pull requests
Configured GitHub Actions for auto-deployment (CI)

🧠 Key Takeaway:

Git is more than version control—it's a collaboration engine and CI/CD foundation.

🎯 What’s Next?

For Week 3, I’ll be diving into:

Docker
Introduction to Kubernetes

🗣 Final Thoughts

Week 2 was packed with learning and real progress. From writing shell scripts that automate EC2 provisioning, to visualizing how DNS and VPCs connect services in the cloud, and finally to managing projects on GitHub—this week made me feel like a true DevOps engineer in the making.

If you’re on a similar path, feel free to share your progress or ask questions. Let’s build in public and grow together! 💪

Resources I Used:

YouTube Deep Dives (trainwithshubham)
AWS Free Tier for cloud practice
GitHub Docs & Git CLI
Linux man pages and cheat sheets

Stay tuned for Week 3!

#devops #shellscripting #git #networking #aws #devopswithnetra

DevOps Journey – Week 2: Shell Scripting, Networking & Git

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