Shell script to populate sample images for array of names

randomImages.sh

#!/bin/bash

productIds=("5108401"  "5108004"  "5084002"  "084003"  "513802"  "510724"  "1083800"  "31083"  "313725"  "5084224"  "82759"  "11735"  "1104_2"  "11268"  "133"  "11084_2"  "114189"  "1721"  "143"  "SA058"  "0848_1"  "540854"  "140876"  "34_4"  "34068"  "584397"  "6296"  "640008"  "09T-IC"  "653"  "54086"  "1903"  "3315"  "54587"  "54527" "B23" "SOF43-TP" )

productImgs=( "productImage.png" "productImage-1.png" "productImage-2.png" "productImage-3.png" "productImage-4.png")
 
prodLen=${#productIds[@]}		#productid array length
imgLen=${#productImgs[@]}		#img array length
	
# use for loop to read all productids
for (( i=0; i<${prodLen}; i++ ));
do
	cp  "${productImgs[$((RANDOM%imgLen))]}" "ProductImages/${productIds[$i]}.png"
	
done

echo "Completed generating $prodLen images from $imgLen sample images."