This file is indexed.

preinst is in isdnutils-base 1:3.25+dfsg1-3.7ubuntu1.

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.

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#!/bin/sh
set -e
# Automatically added by dh_installdeb
dpkg-maintscript-helper rm_conffile /etc/init.d/isdnutils 1:3.25+dfsg1-3.5~ -- "$@"
# End automatically added section