#!/bin/sh
if [ ! -d ".$2" ]; then
  rm -rf ".$2"
  mkdir ".$2"
fi
if [ ! -L "$2" ]; then
  rm -rf "$2"
  rm -rf ".$2/*" ".$2/.*"
  mkdir ".$2/seed"
  ln -sFfh ".$2/seed" "$2"
fi
if [ ! -d "$1" ]; then
  echo "$0: $1 does not exist"
  exit 1
fi
mv "$1" ".$2"
cd ".$2"
while true; do
  RND=`rnd`
  if [ -e $RND ]; then continue; fi
  mv "$1" $RND
  cd ..
  ln -sFfh ".$2/$RND/" "$2"
  cd ".$2"
  ls | grep -v $RND | xargs rm -rf
  break
done