#!/bin/bash

F_SIZE=0
DIFF=0
UPDATE_SECONDS=1

if [ -z ${1} ]
then
  echo "Require file paramater"
  echo "${0} <filename>"
  exit 1
fi;

echo -e "Watching ${1} for progress\n\n"

while true
do
  F_SIZE_PREV=${F_SIZE}
  F_SIZE=`ls -ltr | grep $1 | awk '{print $5}'`
  DIFF=$((${F_SIZE}-${F_SIZE_PREV}/${UPDATE_SECONDS}))
  FORMATTED_SIZE=`numfmt --to=iec-i --suffix=B ${F_SIZE}`
  FORMATTED_DIFF=`numfmt --to=iec-i --suffix=B ${DIFF}`
  echo -en "\e[1A"; echo -e "\e[0K\r"${FORMATTED_SIZE}" total, "${FORMATTED_DIFF}"/s"
  sleep ${UPDATE_SECONDS}
done