RE: blatent self promotion: apt/dpkg beginner guide
location of the package maintainer scripts (postinst, prerm, etc) as well as
other pieces of packaging data like md5sums, conffile lists, etc.
useful tool, play with it and document it here
your data on dpkg --set-selections is wrong:
sudo dpkg --set-selections hold foo
dpkg: --set-selections does not take any argument
proper call is:
or maybe echo "foo hold" | dpkg --set-selections.