#!/bin/sh

SRC_FILE_MB=$1

while true

do

    DD_PID=`pidof dd`

    if [ -n "$DD_PID" ]; then

        break

    fi

done

while true

do

    sleep 5

    if [ ! -d /proc/$DD_PID ]; then

        break

    fi

    kill -s USR1 $DD_PID

    CURRENT_SIZE=`tail -n 1 /tmp/dd_progress_file | sed "s/[^0-9].*//g"`

    [ -n "$CURRENT_SIZE" ] && {

        CURRENT_MB=$(($CURRENT_SIZE / 1048576))

        echo -e "Copied $CURRENT_MB MB / $SRC_FILE_MB MB\r"

    }

done

rm -f /tmp/dd_progress_file