First bash script - https://lankadevelopers.com/topic/372/first-bash-script

Sum of two numbers in bash script - https://lankadevelopers.com/topic/377/sum-of-two-numbers-in-bash-script

#!/bin/bash

fruits=(apple orange graphes banana)
echo "${fruits[2]}" #print element 2
echo "${fruits[@]}" #print all array elements 
echo "${!fruits[@]}" #print array position 
echo "${#fruits[@]}" #calculate array size

fruits[1]=lemon #overwrite 1st element 
echo "${fruits[@]}"

fruits+=(orange) #add more value (අපිට පුලුවන් මේකෙන් array එකේ element වැඩි කරන්න)
echo "${fruits[@]}" #print all array elements
echo "${!fruits[@]}" #print array position