#!/bin/sh
if [ $# -lt 1 -o $# -gt 3 ];then
  echo "$0: <filename> [<expected size>] [<ctime>]"
  exit
  fi
if [ -n "$3" ];then
  ctms="`date -d "$3" '+%s'`"
  ctmd="$3"
else
  ctms="`find "$1" -printf "%A@\n"`"
  ctmd="`find "$1" -printf "%a\n"`"
fi
find "$1" -printf "scale=2;print \"Current rate: \",%s/(%T@-$ctms),\" B/s\\n\"\n"|bc
if [ -n "$2" ];then
  echo -n "Progress    : ";find "$1" -printf "scale=2;print \"%`echo -n "$2"|wc -c`s / $2 (\",%s*100/$2,\"%%)\\n\"\n"|bc
  echo -n "Start   time: ";date -d "$ctmd"
  echo -n "Current time: ";date
  echo -n "Finish  time: ";date --date "`find "$1" -printf "($2-%s)*(%T@-$ctms)/%s\n"|bc` secs"
  fi