#!/bin/bash

echo -e "\t1."

for (( a = 1; a < 11; ++a )); do
	echo "a=$a"
done

echo -e "\n\t2."

for a in $(seq 1 10); do
	echo "a=$a"
done

echo -e "\n\t3."

for a in one "two args" three; do
	echo "a=$a"
done