I used to Google the same commands every week.
kubectl get pods | grep syntax. systemctl flags I could never remember. The exact curl command to test an endpoint.
I'd find the answer, use it, then forget it by next week.
Until I started writing things down.
Every command I used more than twice went into a document. Every debugging pattern that worked. Every bash shortcut that saved time.
Three years later, I have a 18-page handbook of notes that I actually reference when I'm working.
It made me faster. Not because I'm smarter, but because I stopped re-learning the same things.
Now I'm sharing it.
The DevOps Skills Handbook covers:
9 keyboard shortcuts that stop you from using arrow keys (Ctrl+r for command history, Alt+. for last argument, Ctrl+a/e for line navigation)
5 advanced command patterns (xargs parallel processing, awk for log analysis, GNU parallel, find filters, process substitution)
3 automation script templates (health checks, deployment automation, log cleanup with best practices)
7 debugging mental models (Divide & Conquer, Logs > Intuition, The 2-Minute Rule, Rubber Duck Debugging, Predict → Change → Measure, Everything is a Stream, Murphy's Law)
The 5-Phase Incident Response Framework (Acknowledge → Triage → Mitigate → Investigate → Document)
50+ production-ready bash aliases for git, docker, kubernetes, terraform, and system monitoring
It's organized as the 5-Layer CLI Mastery Framework:
Layer 1: Navigation shortcuts
Layer 2: Command efficiency
Layer 3: Automation patterns
Layer 4: Debugging mental models
Layer 5: Incident response workflows
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