Learn BASH with Real Code Examples

Use built-ins instead of spawning processes

Use grep/awk/sed efficiently

Avoid unnecessary loops

Prefer [[ ]] over [ ]

Batch file operations

Quote all variables

Avoid eval

Use set -euo pipefail

Limit sudo usage

Validate user input explicitly

Log files

Syslog integration

Custom echos with timestamps

Status emails via cron

Use ShellCheck

Enforce set -euo pipefail

Write modular functions

Prefer explicit variable names