This file is indexed.

preinst is in openjdk-8-jdk 8u77-b03-3ubuntu3.

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

multiarch=x86_64-linux-gnu
old_basedir=/usr/lib/jvm/java-7-openjdk
jdk_tools='appletviewer jconsole'

case "$1" in
    upgrade)
	if [ -n "$multiarch" ] && [ -n "$2" ]; then
	    for i in $jdk_tools; do
		if [ -n "$(update-alternatives --list $i 2>/dev/null | grep ^$old_basedir/)" ]; then
		    update-alternatives --remove $i $old_basedir/bin/$i || true
		fi
	    done
	fi
	;;
esac



exit 0