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Bash Scripting — a complete, self-contained learning track in 15 modules. It teaches you to read, write, and debug the shell scripts that hold real infrastructure together: deploy scripts, cron jobs, CI steps, health checks.
What it assumes: nothing about programming or scripting. You only need a Linux machine (or macOS, or WSL on Windows) with a terminal you can open. Every concept is taught before it is used — start at Module 1 and the track never references anything it has not already explained.
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Foundation
1. The Shell, Scripts, and How Commands Run
2. Variables, Quoting, and Word Splitting
3. Exit Codes and Command Chaining
4. Streams, Redirection, and Pipes
5. Conditionals: if, test, and case
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Intermediate
6. Loops
7. Script Arguments and User Input
8. Functions and Script Structure
9. Parameter Expansion and String Manipulation
10. Arrays and Associative Arrays
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Advanced
11. Text Processing in Pipelines
12. Processes, Subshells, and Job Control
13. Signals and Traps
14. Error Handling and Defensive Scripting
15. Debugging, Testing, and Production Scripts
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Module 1 — The Shell, Scripts, and How Commands Run
Module 2 — Variables, Quoting, and Word Splitting
Module 3 — Exit Codes and Command Chaining
Module 4 — Streams, Redirection, and Pipes
Module 5 — Conditionals: if, test, and case
Module 7 — Script Arguments and User Input
Module 8 — Functions and Script Structure
Module 9 — Parameter Expansion and String Manipulation
Module 10 — Arrays and Associative Arrays
Module 11 — Text Processing in Pipelines
Module 12 — Processes, Subshells, and Job Control
Module 14 — Error Handling and Defensive Scripting
Module 15 — Debugging, Testing, and Production Scripts