Fibonaki

 read -p "Enter the Number: " number 

x=0

y=1

i=2

echo "Fibonacci Series Upto $number Number: "

 echo "$x" 

echo "$y"

while [ $i -It $number ] 

do

i='expr $i + 1'

 z='expr $x+ $y'

echo "$z"

X=$y

y=$z

done