This file is indexed.

postinst is in libc-bin 2.15-0ubuntu10.18.

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 [ "x$1" = xtriggered ]
then
	LDCONFIG_NOTRIGGER=y
	export LDCONFIG_NOTRIGGER
	echo ldconfig deferred processing now taking place
	ldconfig || ldconfig --verbose
	exit 0
fi