Certifications
Certification
Linux System Administration Certification
Hands-on Linux training covering system architecture, file systems, process management, permissions, networking fundamentals, and shell scripting with real command-line exercises.
What I actually learned
This certification pushed me to get genuinely comfortable with the command line — not just running one-liners but actually understanding what's happening underneath. I spent a lot of time working through permission models, debugging broken scripts, and setting up services from scratch. The networking section was probably the most eye-opening part for me. Getting SSH tunneling right, locking down firewall rules with ufw, and understanding how routing tables actually work gave me a much stronger foundation for everything I've done in cloud and DevOps since.
Topics covered
- File system hierarchy and disk management
- User and group permissions with chmod/chown
- Process management with ps, top, and kill
- Networking fundamentals — IP config, SSH, firewall rules
- Shell scripting and cron job automation
- Package management with apt and yum
Why it matters to my work
Almost everything I build eventually runs on Linux in production. Whether it's an EC2 instance, a Docker container, or a VPS — knowing how to navigate and manage that environment without a GUI is a non-negotiable skill. This certification formalized a lot of knowledge I had picked up informally and filled in the gaps I didn't know I had.
Skills from this certification
“Linux is the backbone of most of what I do. After finishing this, I stopped being afraid of a bare terminal and started actually enjoying working in it.”