a=1
b=1
d=1
echo Enter the no for fibbo series
read n
if [ $n -eq 1 ]
then
echo the fibbo is $n
elif [ $n -eq 2 ]
then
echo The fibbo is
echo $a
echo $a
else
echo The fibbo is:
echo $a
echo $b
while [ $n -ge 1 ]
do
        echo $`expr $a + $b`
        a=$b
        b=$`expr $d - $b`
        n=`expr $n - 1`
done
fi