Name Greeting

#!/usr/bin/env bash
set -euo pipefail

name="${1:-Aziz}"
topic="${2:-Bash}"

greet() {
	local student="$1"
	local subject="$2"

	printf 'Hello, %s.\n' "$student"
	printf 'Today you are rebuilding %s by hand.\n' "$subject"
}

greet "$name" "$topic"