#!/bin/bash

md5="$1"
[ -z "$md5" ] &&  md5=2cp.md5
[ -f "$md5" ] || { echo "ERROR: $md5 not found"; exit 255; }

function calc_kb() {
 i=0
 cat "$1" | cut -c 34- | while read line; do
  kb=$(du "$line" | cut -f 1)
  i=$((i+kb))
  echo $i
 done | tail -n1
}

kb=$(calc_kb "$md5")
mb=$((kb/1024))
gb=$((mb/1024))
tb=$((gb/1024))

echo "Noch Zu Kopieren: $kb Kb = $mb Mb = $gb Gb = $tb Tb"