How to declare an array variable?

To declare an array variable in shell scripting, you can use the declare command with the -a option, or you can simply assign values to an array variable using parentheses. Here are two common methods:

Method 1: Using declare

declare -a myArray
myArray=(1 2 3 4 5)

Method 2: Direct Assignment

myArray=(1 2 3 4 5)

Accessing Array Elements

You can access elements of the array using the following syntax:

echo ${myArray[0]}  # Outputs: 1
echo ${myArray[1]}  # Outputs: 2

Example of Declaring and Using an Array

#!/bin/bash

# Declare an array
declare -a fruits=("Apple" "Banana" "Cherry")

# Access and print elements
echo ${fruits[0]}  # Outputs: Apple
echo ${fruits[1]}  # Outputs: Banana

You can choose either method to declare an array based on your preference.