This file is indexed.

postrm is in coreutils 8.25-2ubuntu2.

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" = 'remove' -a -L '/usr/bin/touch' ]; then
  rm /usr/bin/touch
fi