Learn BASH with Real Code Examples

Backup automation script

Log parser using grep/awk/sed

Server health monitoring tool

CI deploy script

Docker build+push automation

Use set -x for debug logs

Check missing quotes

Fix incorrect variable expansions

Detect whitespace issues

Validate script permissions

Use bats-core for testing

Mock commands with functions

Validate exit codes

Test with shellcheck

Create reproducible test cases

Run directly on any Unix/Linux system

Embedded in Docker images

Cron-based scheduling

CI/CD pipelines (GitHub Actions, GitLab CI)

System startup scripts

Bash debugger (bashdb)

ShellCheck for linting

shfmt for formatting

tmux for terminal control

cron for scheduling tasks

Docker & Kubernetes

Git automation

Systemd services

Cloud CLIs (AWS, GCP, Azure)

UNIX utilities (awk, sed, grep)

Use aliases

Use set -x to debug

Leverage pipes heavily

Combine awk/sed/grep effectively

Write a log analysis tool

Build a backup/restore script

Deploy app via CI/CD

Create a full CLI tool