Array Declarations

ARRAYNAME[INDEXNR]=value

or

ARRAYNAME=(value1 value2 …. valueN)

or

ARRAYNAME=([1]=10 [2]=20 [3]=30)

Defining Array Values

a[0]=1
a[2]=90
a[3]=100
a[4]=85
a[5]=65

To print Single Element 

echo ${arr[0]}
echo ${arr} – Prints first Element

To Print Array Value in Shell Script?

#! /bin/bash

# To declare static Array
arr=(nishant vaibhav rishabh abhishek puneet)

# To print all elements of array
echo ${arr[@]}
echo ${arr[*]}
echo ${arr[@]:0}
echo ${arr[*]:0}

Scripts