DevOps Foundations
Start here: Linux, Git, Docker, and the language you need to automate daily operations.
DevOps learning library
Master Class Commands
A revived, product-ready command reference for infrastructure engineers: searchable guides, production examples, troubleshooting notes, learning paths, and a copy-ready command index.
20guides
1,394commands
16categories
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Pick the path closest to your current goal, then work through the guides in order.
Platform Engineer
Build toward orchestration, infrastructure as code, configuration management, and delivery pipelines.
Production Operator
Operate real systems with observability, troubleshooting, cloud CLI usage, and disaster recovery patterns.
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Guides
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Automation
Ansible Master Class
Engineering-Grade Reference Manual for Ansible
18 min read · 1,806 linesCloudAWS CLI Commands Master Class
Engineering-Grade Reference Manual for AWS CLI
7 min read · 672 linesCloudAzure CLI Commands Master Class
Engineering-grade reference manual for Azure CLI operations across resource groups, compute, storage, networking, AKS, Functions, Monitor, Key Vault, and Azure DevOps.
7 min read · 580 linesQuick ReferenceDevOps Cheat Sheets Collection
Quick Reference Cards for All Master Classes
4 min read · 396 linesCI/CDCI/CD Pipeline Patterns Master Class
Engineering-Grade Reference Manual for CI/CD Pipelines
21 min read · 2,199 linesDatabasesDatabase Administration Master Class
Engineering-Grade Reference Manual for Database Administration
4 min read · 370 linesContainersDocker Commands Master Class
Engineering-Grade Reference Manual for Docker
9 min read · 666 linesVersion ControlGit Advanced Workflows Master Class
Engineering-Grade Reference Manual for Git
21 min read · 1,599 linesReferenceDevOps Glossary
Comprehensive DevOps Terminology Reference
6 min read · 381 linesContainersKubernetes Master Class
Engineering-Grade Reference Manual for Kubernetes
21 min read · 1,705 linesSystemsLinux System Administration Master Class
Engineering-Grade Reference Manual for Linux System Administration
21 min read · 1,449 linesOperationsMonitoring & Observability Master Class
Engineering-Grade Reference Manual for Monitoring & Observability
7 min read · 696 linesNetworkingNetworking Fundamentals Master Class
Engineering-grade reference manual for TCP/IP, DNS, routing, subnetting, load balancing, VPNs, CDN behavior, and network troubleshooting.
6 min read · 534 linesAutomationPython for DevOps Master Class
Engineering-Grade Reference Manual for Python in DevOps
3 min read · 342 linesScenariosReal-World DevOps Scenarios
Practical Integration Guide
15 min read · 1,329 linesSecuritySecurity & Compliance Master Class
Engineering-grade reference manual for practical DevOps security, compliance controls, and audit-ready automation.
7 min read · 571 linesService MeshService Mesh Master Class
Engineering-grade reference manual for Istio, Linkerd, Consul, traffic management, mTLS, observability, and production service-mesh operations.
7 min read · 611 linesAutomationShell Scripting (Bash) Master Class
Engineering-Grade Reference Manual for Bash Scripting
5 min read · 475 linesInfrastructure as CodeTerraform with Azure Master Class
Engineering-Grade Reference Manual for Terraform & Microsoft Azure
18 min read · 1,790 linesTroubleshootingDevOps Troubleshooting Guide
Common Problems and Solutions
4 min read · 409 lines