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A practical, hands-on guide to Linux and the command line for software professionals. Covers file operations, essential tools (grep, curl, jq, awk, sed), Bash scripting, Docker orchestration, log analysis pipelines, CI/CD pipeline debugging, and 100 progressively challenging exercises drawn from real-world QA scenarios.

The book is written to be approachable if you are early in your QA career — no prior expertise is assumed — while staying dense enough to serve as a working reference for practitioners.

This is Book 19 of 26 in The Modern QA Engineer Skillset — the \"Technical Foundations\" track of a series mapping the complete 2026 QA skill set, from AI-augmented automation to career strategy. Each book stands alone; together they form the curriculum behind modernQAcourse.com.

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Kick off your book project, get started with GhostAI, get better at marketing, or spend the day doing all three! Free live workshops on Zoom. Saturday, June 27, 2026.

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