triangle.sh

#!/bin/bash

echo "Script to determine the type of triangle based on side lenghts"
read -p "Enter a side length: " L1
read -p "Enter other side length: " L2
read -p "Enter the hypotenuse: " H

L1=$(echo "$L1*$L1"|bc)
L2=$(echo "$L2*$L2"|bc)
H=$(echo "$H*$H"|bc)
L=$(echo "$L1+$L2"|bc)

if (( $(bc <<< "$H==$L") )); then
	TRIANGLE="right";
elif (( $(bc <<< "$H>$L") )); then
	TRIANGLE="obtuse";
elif (( $(bc <<< "$H<$L") )); then
	TRIANGLE="acute";
else echo "Unable to determine triangle type :C";
fi;

if [ -n ${TRIANGLE+x} ]; then
	echo "The triangle is $TRIANGLE";
fi;

read -p "Test another triangle?[D:N] " REPLY
REPLY=${REPLY:=N}
case $REPLY in
	"Y" | "y" )
	bash triangle.sh
	;;
	"N" | "n" )
	exit 0
	;;
esac
exit 0
;;