Fibonacci in Bash

Published on 28 April 2022 (Updated: 25 September 2022)

Fibonacci in Bash

Welcome to the Fibonacci in Bash page! Here, you'll find the source code for this program as well as a description of how the program works.

Current Solution

#!/bin/bash

count=$1

[[ $count =~ ^[0-9]+$ ]] || { echo "Usage: please input the count of fibonacci numbers to output"; exit 1; }

n=1
n_minus_1=1
[[ $count < 1 ]] && exit 0

echo "1: 1"
for i in $(seq 2 $count); do
    echo "$i: $n"
    tmp=$n
    n=$[$n+$n_minus_1]
    n_minus_1=$tmp
done

Fibonacci in Bash was written by:

If you see anything you'd like to change or update, please consider contributing.

Note: The solution shown above is the current solution in the Sample Programs repository as of Apr 07 2019 00:40:32. The solution was first committed on Oct 26 2018 03:28:37. As a result, documentation below may be outdated.

How to Implement the Solution

No 'How to Implement the Solution' section available. Please consider contributing.

How to Run the Solution

No 'How to Run the Solution' section available. Please consider contributing.