\n<\/p>\n
Hello everyone! \ud83d\udc4b<\/p>\n
Welcome to Week 1 of my DevOps learning journey.<\/p>\n
As a final-year BCA student specializing in Cloud Computing, I have decided to document my journey toward becoming a DevOps Engineer. This blog series will cover everything I learn, from Linux fundamentals to cloud computing, containers, CI\/CD, Kubernetes, and monitoring tools.<\/p>\n
Since Linux is the backbone of most DevOps environments, I decided to start my journey by learning Linux fundamentals and essential commands.<\/p>\n
Why Linux Matters in DevOps<\/p>\n
Most servers in cloud environments run Linux. Whether you’re working with AWS EC2 instances, Docker containers, Kubernetes clusters, or CI\/CD pipelines, Linux knowledge is essential.<\/p>\n
As a DevOps Engineer, you’ll frequently:<\/p>\n
Manage Linux servers
\nDeploy applications
\nTroubleshoot issues
\nMonitor system performance
\nAutomate tasks using shell scripts<\/p>\n
That’s why Linux is often considered the first skill every DevOps engineer should master.<\/p>\n
What I Learned This Week<\/p>\n
Understanding the Linux File System<\/p>\n
One of the first things I learned was how Linux organizes files and directories.<\/p>\n
Some important directories include:<\/p>\n
\/ \u2013 Root directory<\/p>\n
\/home \u2013 User home directories<\/p>\n
\/etc \u2013 Configuration files<\/p>\n
\/var \u2013 Logs and variable data<\/p>\n
\/tmp \u2013 Temporary files<\/p>\n
\/usr \u2013 User programs and utilities<\/p>\n
Understanding the file system structure helps navigate servers more effectively.<\/p>\n
Basic Navigation Commands<\/p>\n
I practiced several commands used daily by Linux administrators.<\/p>\n
Check Current Directory<\/p>\n
pwd<\/p>\n
Enter fullscreen mode<\/p>\n
Exit fullscreen mode<\/p>\n
List Files and Directories<\/p>\n
ls
\nls -l
\nls -la<\/p>\n
Enter fullscreen mode<\/p>\n
Exit fullscreen mode<\/p>\n
Change Directory<\/p>\n
cd \/home<\/p>\n
Enter fullscreen mode<\/p>\n
Exit fullscreen mode<\/p>\n
Create Directory<\/p>\n
mkdir project<\/p>\n
Enter fullscreen mode<\/p>\n
Exit fullscreen mode<\/p>\n
Remove Directory<\/p>\n
rmdir project<\/p>\n
Enter fullscreen mode<\/p>\n
Exit fullscreen mode<\/p>\n
File Management Commands<\/p>\n
Working with files is a common task in Linux.<\/p>\n
Create a File<\/p>\n
touch file.txt<\/p>\n
Enter fullscreen mode<\/p>\n
Exit fullscreen mode<\/p>\n
Copy Files<\/p>\n
cp file.txt backup.txt<\/p>\n
Enter fullscreen mode<\/p>\n
Exit fullscreen mode<\/p>\n
Move Files<\/p>\n
mv file.txt documents\/<\/p>\n
Enter fullscreen mode<\/p>\n
Exit fullscreen mode<\/p>\n
Delete Files<\/p>\n
rm file.txt<\/p>\n
Enter fullscreen mode<\/p>\n
Exit fullscreen mode<\/p>\n
View File Content<\/p>\n
cat file.txt<\/p>\n
Enter fullscreen mode<\/p>\n
Exit fullscreen mode<\/p>\n
Viewing System Information<\/p>\n
I also learned how to check system details.<\/p>\n
Check CPU Information<\/p>\n
lscpu<\/p>\n
Enter fullscreen mode<\/p>\n
Exit fullscreen mode<\/p>\n
Check Memory Usage<\/p>\n
free -h<\/p>\n
Enter fullscreen mode<\/p>\n
Exit fullscreen mode<\/p>\n
Check Disk Usage<\/p>\n
df -h<\/p>\n
Enter fullscreen mode<\/p>\n
Exit fullscreen mode<\/p>\n
Check Running Processes<\/p>\n
ps -ef<\/p>\n
Enter fullscreen mode<\/p>\n
Exit fullscreen mode<\/p>\n
Monitor Processes in Real Time<\/p>\n
top<\/p>\n
Enter fullscreen mode<\/p>\n
Exit fullscreen mode<\/p>\n
Understanding Permissions<\/p>\n
Linux uses permissions to control access to files and directories.<\/p>\n
I learned about:<\/p>\n
Read (r)
\nWrite (w)
\nExecute (x)<\/p>\n
Viewing permissions:<\/p>\n
ls -l<\/p>\n
Enter fullscreen mode<\/p>\n
Exit fullscreen mode<\/p>\n
Changing permissions:<\/p>\n
chmod 755 script.sh<\/p>\n
Enter fullscreen mode<\/p>\n
Exit fullscreen mode<\/p>\n
Changing ownership:<\/p>\n
chown user:user file.txt<\/p>\n
Enter fullscreen mode<\/p>\n
Exit fullscreen mode<\/p>\n
Permissions are critical for maintaining system security.<\/p>\n
Service Management<\/p>\n
One interesting topic was managing services using systemctl.<\/p>\n
Check Service Status<\/p>\n
systemctl status nginx<\/p>\n
Enter fullscreen mode<\/p>\n
Exit fullscreen mode<\/p>\n
Start a Service<\/p>\n
systemctl start nginx<\/p>\n
Enter fullscreen mode<\/p>\n
Exit fullscreen mode<\/p>\n
Stop a Service<\/p>\n
systemctl stop nginx<\/p>\n
Enter fullscreen mode<\/p>\n
Exit fullscreen mode<\/p>\n
Restart a Service<\/p>\n
systemctl restart nginx<\/p>\n
Enter fullscreen mode<\/p>\n
Exit fullscreen mode<\/p>\n
This is especially useful when managing web servers and applications.<\/p>\n
Viewing Logs<\/p>\n
Logs help identify issues and troubleshoot systems.<\/p>\n
tail -f \/var\/log\/messages<\/p>\n
Enter fullscreen mode<\/p>\n
Exit fullscreen mode<\/p>\n
journalctl -xe<\/p>\n
Enter fullscreen mode<\/p>\n
Exit fullscreen mode<\/p>\n
Understanding logs is one of the most important skills for troubleshooting production systems.<\/p>\n
My First Bash Script<\/p>\n
I wrote a simple script to check whether Nginx is running.<\/p>\n
#!\/bin\/bash<\/p>\n
if systemctl is-active –quiet nginx
\nthen
\n echo “Nginx is running”
\nelse
\n echo “Nginx is not running”
\nfi<\/p>\n
Enter fullscreen mode<\/p>\n
Exit fullscreen mode<\/p>\n
This helped me understand:<\/p>\n
if-else conditions
\nshell scripting basics
\nautomation concepts<\/p>\n
It was my first step toward infrastructure automation.<\/p>\n
Challenges I Faced<\/p>\n
During my learning, I encountered a few challenges:<\/p>\n
Understanding Linux permissions
\nNavigating directories quickly
\nReading system logs
\nWriting Bash scripts correctly<\/p>\n
After practicing commands repeatedly and experimenting on AWS EC2 instances, these concepts became much clearer.<\/p>\n
Key Takeaways<\/p>\n
This week taught me that Linux is much more than just a command-line operating system.<\/p>\n
I learned:<\/p>\n
\u2705 Linux file system structure<\/p>\n
\u2705 Essential Linux commands<\/p>\n
\u2705 File and directory management<\/p>\n
\u2705 System monitoring basics<\/p>\n
\u2705 Service management<\/p>\n
\u2705 Log analysis<\/p>\n
\u2705 Bash scripting fundamentals<\/p>\n
Most importantly, I realized that strong Linux fundamentals make learning DevOps tools much easier.<\/p>\n
What’s Next?<\/p>\n
In Week 2, I plan to learn:<\/p>\n
Advanced Linux Commands
\nUser and Group Management
\nNetworking Basics
\nSSH and Remote Access
\nPackage Management
\nMore Bash Scripting<\/p>\n
Final Thoughts<\/p>\n
Every DevOps Engineer starts somewhere, and Linux is the perfect place to begin.<\/p>\n
This week gave me a solid foundation and increased my confidence in working with servers and cloud environments. I’m excited to continue learning and sharing my progress through this blog series.<\/p>\n
If you’re also starting your DevOps journey, feel free to connect and share your experiences.<\/p>\n
See you in Week 2! \ud83d\ude80<\/p>\n