Script Name

Select blocks to include:

Bash Best Practices
• Always start with #!/bin/bash
• Use set -euo pipefail for safety
• Quote variables: "$var" not $var
• Use [[ ]] instead of [ ]
• Check return codes with $?
• Use local in functions

Useful Patterns
trap 'cleanup' EXIT — cleanup on exit
read -p "?" var — prompt user
$(command) — command substitution
"${var:-default}" — default value
"${var:?error}" — required var

Run Your Script
chmod +x script.sh
./script.sh