## FreeBSD and Linux, /bin/sh
##
ddsort()
{
  if [ -d "$1" ] ; then
        dir=`echo "$1" | sed -e "s;/$;;"`
        dir="${dir}/*"
  elif [ -n "$1" ] ; then
        dir="$1"
  else
        dir="*"
  fi

  du -sck ${dir} 2>/dev/null | awk '{printf "%010.4f//%s\n", $1/1024,$2}'
|\
  sort -r | awk -F"//" '{printf "% 10.1fMB\t%s\n", $1,$2}'
}