#!/bin/bash

base_dir=/home/dp

function backup_disk {
  if [ -e $base_dir/$1/lost+found/ ] ; then
    echo rsync -av --delete $base_dir/$1/ $base_dir/backup/$1/ &
  else
    >&2 echo "Disk $base_dir/$i is not mounted, skipping backup"
  fi
}

for i in $(seq -w 1 20); do 
  backup_disk hdd$i
done