This file is indexed.

postinst is in mpd 0.20.18-1build1.

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

umask 0022
ACTION="$1"
VERSION="$2"

if [ "$ACTION" = "configure" ]; then
    # add the mpd user
    if ! getent passwd mpd >/dev/null; then
        adduser --quiet --ingroup audio --system --no-create-home \
            --home /var/lib/mpd mpd
    fi

    # set ownership and permissions on directories
    for i in /var/log/mpd /var/lib/mpd /var/lib/mpd/playlists; do
        if ! dpkg-statoverride --list --quiet "$i" >/dev/null; then
            dpkg-statoverride --force --quiet --update \
                --add mpd audio 0755 "$i"
        fi
    done

    # set ownership and permissions on mpd.conf
    if ! dpkg-statoverride --list --quiet /etc/mpd.conf >/dev/null; then
        dpkg-statoverride --force --quiet --update \
            --add mpd audio 0640 /etc/mpd.conf
    fi
fi

# Automatically added by dh_installsystemd/11.1.6ubuntu1
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	# In case this system is running systemd, we need to ensure that all
	# necessary tmpfiles (if any) are created before starting.
	if [ -d /run/systemd/system ] ; then
		systemd-tmpfiles --create /usr/lib/tmpfiles.d/mpd.conf >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_installinit/11.1.6ubuntu1
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -x "/etc/init.d/mpd" ]; then
		update-rc.d mpd defaults >/dev/null
		if [ -n "$2" ]; then
			_dh_action=restart
		else
			_dh_action=start
		fi
		invoke-rc.d mpd $_dh_action || exit 1
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/11.1.6ubuntu1
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	# This will only remove masks created by d-s-h on package removal.
	deb-systemd-helper unmask 'mpd.service' >/dev/null || true

	# was-enabled defaults to true, so new installations run enable.
	if deb-systemd-helper --quiet was-enabled 'mpd.service'; then
		# Enables the unit on first installation, creates new
		# symlinks on upgrades if the unit file has changed.
		deb-systemd-helper enable 'mpd.service' >/dev/null || true
	else
		# Update the statefile to add new symlinks (if any), which need to be
		# cleaned up on purge. Also remove old symlinks.
		deb-systemd-helper update-state 'mpd.service' >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/11.1.6ubuntu1
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	# This will only remove masks created by d-s-h on package removal.
	deb-systemd-helper unmask 'mpd.socket' >/dev/null || true

	# was-enabled defaults to true, so new installations run enable.
	if deb-systemd-helper --quiet was-enabled 'mpd.socket'; then
		# Enables the unit on first installation, creates new
		# symlinks on upgrades if the unit file has changed.
		deb-systemd-helper enable 'mpd.socket' >/dev/null || true
	else
		# Update the statefile to add new symlinks (if any), which need to be
		# cleaned up on purge. Also remove old symlinks.
		deb-systemd-helper update-state 'mpd.socket' >/dev/null || true
	fi
fi
# End automatically added section