Unix

4. Write a bash shell script which implements the following iterative algorithn for calcu- ( lating Fibonacci numbers 1: function FIBONACcI(n) 2: A[0] ? 0 3: A[1] ?0 4: for index ? 2 to n do A [index] ? Alinder-11+ Alinder-21 6: end for 7: return Aln] 8: end function Your script should accept one or more positive integer and print out the correspond- ing Fibonacci numbers. Name your script [username].iterative_fib.sh, replacing [username] with your username (i.e., jagraves21_iterative.fib.sh). You may as- sume that valid input will be provided. Your program should have the same behavior as seen above