This file is indexed.

postinst is in alsa-utils 1.1.3-1ubuntu1.

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
# Automatically added by dh_installinit
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ]; then
	if [ -x "/etc/init.d/alsa-utils" ]; then
		update-rc.d alsa-utils defaults >/dev/null || exit $?
	fi
fi
# End automatically added section
# Automatically added by dh_systemd_start
if [ -d /run/systemd/system ]; then
	systemctl --system daemon-reload >/dev/null || true
	if [ -n "$2" ]; then
		_dh_action=try-restart
	else
		_dh_action=start
	fi
	deb-systemd-invoke $_dh_action alsa-restore.service alsa-state.service >/dev/null || true
fi
# End automatically added section