#!/bin/bash
if [[ $# -ne 2 ]]
then
	echo "Usage: ./mult_mat.sh <NUM_ARG1> <NUM_ARG2>"
	exit
fi
if [[ $1 -gt $2 ]]
then 
	echo "First argument must be less than second argument !!"
	exit
fi
if [[ $1 -lt 0 ]]
then
	echo "Arguments must be positive !!"
	exit
fi
if [[ $2 -lt 0 ]]
then
	echo "Arguments must be positive !!"
	exit
fi
for ((i=$1;i<=$2;i++))
do
	for ((f=$1;f<=$2;f++))
	do
		echo -ne "$((i*f))\t"
	done
	echo -e "\n"
done
exit