Bash Scripting

The building blocks of every bash script: the shebang line, variables, basic script structure, reading command-line arguments, and exit codes.

Branching with if/else/case and looping with for/while, applied to a worked example that processes a list of files conditionally.

Writing reusable bash functions, understanding local vs. global variable scope, sourcing shared scripts, and assembling a small reusable deployment-helper script.

String manipulation techniques built into bash, working with indexed arrays, and the quoting and word-splitting gotchas that most often break scripts.

A capstone topic: building a real automation script — a backup routine with health checks and logging — while applying error-handling best practices that production scripts rely on.