Write a shell script to generate a multiplication table [Unix Lab]

Write a shell script to generate a multiplication table

echo Multiplication Table: 

echo Which table do you want ? (Give Number):

read num

iter=1

while [ $num –le 5 ]

do

res=`expr $num \* $iter`

echo $num "*" $iter "=" $res

iter=`expr $iter + 1`

done