Part III: Programming Constructs
Programming fundamentals for shell automation.
Chapters
| Chapter | Topic | Status |
|---|---|---|
Understanding Functions |
[ ] Not Started |
|
Performing Mathematical Operations |
[ ] Not Started |
|
Automation via Here Documents and expect |
[ ] Not Started |
|
ImageMagick Scripting |
[ ] Not Started |
|
Control Structures |
[ ] Not Started |
|
Arrays and Data Structures |
[ ] Not Started |
|
Debugging and Error Handling |
[ ] Not Started |
Key Concepts
-
Functions and libraries
-
Sourcing and modular scripts
-
Arithmetic and bc for floating point
-
Heredocs for automation
-
expect for interactive automation
-
Control flow (if, case, loops)
-
Arrays (indexed and associative)
-
Debugging with set -x
-
Error handling and trap
Infrastructure Application
| Concept | Home Lab Use |
|---|---|
Functions (Ch 10) |
Build reusable library for netapi, dsec |
Heredocs (Ch 12) |
Automate ISE config, k3s deployments |
expect (Ch 12) |
Automate interactive CLI tools |
Arrays (Ch 15) |
Process multiple hosts, VLANs, configs |
Error handling (Ch 16) |
Production-grade backup scripts |