This file is indexed.

postinst is in ubuntukylin-default-settings 1.4.4.

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

FILE_MD5SUM=47d621d5a840d525a1663c12b2ab9e50
FILE_PATH=/etc/apt/sources.list.d
FILE_NAME=ubuntukylin.list
DISTRIBUTION_FILE=/usr/lib/firefox/distribution/distribution.ini
DISTRIBUTION_UBUNTU=/usr/lib/firefox/distribution/distribution.ini.ubuntu-defaults

if [ "$1" = configure ]; then
	md5sum ${FILE_PATH}/*.list 2>/dev/null | grep -v ${FILE_NAME} | grep ${FILE_MD5SUM} | awk '{print $2}' | xargs rm -f
fi

if [ -e $DISTRIBUTION_FILE ]; then
    mv $DISTRIBUTION_FILE $DISTRIBUTION_UBUNTU
fi