Loops and Iteration Lab
Master bash loops and iteration for powerful automation - process multiple servers, files, and configurations efficiently.
Lab Overview
In this hands-on lab, you'll master bash loops and iteration patterns essential for automation and batch processing. You'll learn for loops, while loops, until loops, nested loops, and arrays to build production-ready automation tools.
You'll implement server deployment automation, log file processing, configuration validation, backup rotation, and multi-environment deployments. These skills are fundamental to platform engineering and infrastructure automation.
By the end of this lab, you'll understand:
- for loops for iterating over lists, ranges, and command output
- while loops for condition-based iteration
- until loops and loop control (break/continue)
- Nested loops for multi-dimensional processing
- Bash arrays and indexed data structures
- Batch file processing and validation
- Configuration deployment pipelines
- Backup rotation and cleanup strategies
- Real-world automation patterns
What You'll Learn
Write for loops to iterate over lists, ranges, command output, and files
Use while loops for condition-based iteration and service readiness polling
Implement loop control with break and continue for retry logic and edge cases
Work with bash arrays and nested loops for multi-dimensional data processing
Build batch processing scripts that operate across multiple servers and environments
Prerequisites
bash script fundamentals (Week 5 Lab 1)
conditionals and control flow (Week 5 Lab 2)
linux command line proficiency
Technologies Covered
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