This file is indexed.

postinst is in libsasl2-modules 2.1.27~101-g0780600+dfsg-3ubuntu2.

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

if [ "$1" = "configure" ]; then
	if dpkg --compare-versions "$2" lt-nl "2.1.27~101-g0780600+dfsg-3~" ; then
		# fix permissions 0755 -> 0644 upon upgrades from jessie
		if [ -f /etc/logcheck/ignore.d.server/libsasl2-modules ]; then
			chmod a-x /etc/logcheck/ignore.d.server/libsasl2-modules
		fi
	fi
fi