Script from Lockdown Learning #16 for downloading from SRA.

get_sra_data.sh

#!/bin/bash

VAR=$(tail -n +2 SraRunTable.txt | cut -d ',' -f 1)

# This is a loop for downloading the data

for i in ${VAR}
  do
    if [ -f ${i}.fastq.gz ]
      then
        echo "${i} already downloaded"
    else
      echo "(o) Downloading SRA entry: ${i}" 
      # downloading SRA entry
      fastq-dump --gzip --defline-qual '+' ${i}
      echo "(o) Done downloading ${i}"
    fi
  done

Thank you Simon. You made it seem so easy and straight forward for people not so talented like me.