# arg 1: the new package version
post_install() {
  echo ">>>"
  echo ">>>" 
  echo ">>>"
  echo ">>> many thanks to the debian people who provide the sources"
  echo ">>>"
}

# arg 1:  the old package version
post_remove() {
  echo ">>>"
  echo ">>>"
  echo ">>>"
}

op=$1
shift
$op $*