This file is indexed.

preinst is in ppp 2.4.5-5.1ubuntu2.

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 -e

case "$1" in
    install|upgrade)
    if dpkg --compare-versions "$2" le "2.4.5-4"; then

    if dpkg --compare-versions "$2" le "2.4.4b1-1"; then
	rm -f /etc/init.d/ppp
	update-rc.d ppp remove
    fi

	rm -f /etc/apm/event.d/ppp
    fi
    ;;
esac