preinst is in liquidwar-data 5.6.4-3ubuntu1.
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 | #!/bin/sh
set -e
test -h /usr/share/doc/liquidwar-data && rm /usr/share/doc/liquidwar-data || true
|