This file is indexed.

postrm is in plymouth-theme-script 0.8.8-0ubuntu17.

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" = xremove ]; then
	if which update-initramfs >/dev/null 2>&1
	then
		update-initramfs -u
	fi
fi