preinst is in libxmlezout2-dev 1.06.1-5.
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 | #! /bin/sh
# preinst script for libxmlezout
set -e
dpkg-divert --package libxmlezout2-dev --rename --add /usr/share/man/man7/xml_ez_out.7.gz
exit 0
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