How to download genomic scaffolds?

gistfile1.sh

#!/bin/bash

echo "Start..."

rm -f ~/results.txt

mkdir -p ~/Data/nematostella_vectensis

cd ~/Data/nematostella_vectensis

root_Id="ABAV0"

for ((i=1000001;i<=1059149;i+=1))
do
	echo "Download of $root_Id$i"
	wget -qO $root_Id$i.fasta "http://eutils.ncbi.nlm.nih.gov/entrez/eutils/efetch.fcgi?db=nucleotide&id=$root_Id$i&rettype=fasta"
done

echo "End..."