preinst is in postgresql-common 173.
This file is a maintainer script. It is executed when installing (*inst) or removing (*rm) the package.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | #!/bin/sh
set -e
case "$1" in
install|upgrade)
dpkg-divert --package postgresql-common --rename --divert /usr/bin/pg_config.libpq-dev --add /usr/bin/pg_config
;;
abort-upgrade)
;;
*)
echo "$0 called with unknown argument \`$1'" 1>&2
exit 1
;;
esac
|