This file is indexed.

postinst is in debian-edu-archive-keyring 2014.10.14.

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 /usr/bin/apt-key ]; then
    # "apt-key update" only uses /usr/share/keyrings/debian-archive-*.gpg, so we use "apt-key add"
    apt-key add /usr/share/keyrings/debian-edu-archive-keyring.gpg
fi