bin/*, refuse to operate if filesystem is mounted noexec.

--

ia64, bin/update should use --print-uris from apt-get update, since
remote system may not be same architecture.

scripts to enable and disable specific systems

separation of testing and stable

adoption of package list and sources from nearby well-connected systems
that may have a more recent copy that matches the downloadable copy.
(e.g. needs md5sum, sizes and dates of package lists)

	grab all other lists into one place
	rsync --fuzzy --delete-after to that place

or
	read Release file, to get md5's of package files,
	go surf the package files to find matches,
	copy them across.