#!/bin/bash
if [[ $# -lt 2 ]]
then
	echo "Usage: $0 <NUM_ARG1> <NUM_ARG2>"
	exit
fi
	if [[ $1 -lt 0 || $2 -lt 0 ]]
	then 
		echo "Arguments must be both positive!"
		exit
	fi
		if [[ $2 -lt $1 ]]
		then
			echo "Argument 1 must be less than Argument 2!"
		fi
			for ((i=$1;i<=$2;i++))
				do
					for ((j=$1;j<=$2;j++))
					do
						echo -n $((i*j))
						echo -ne "\t"
					done
				echo -e "\n"
				done
				exit