postinst is in irker 2.17+dfsg-1.
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.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 | #!/bin/sh
set -e
case "${1}" in
	configure)
		if ! getent passwd irker > /dev/null 2>&1
		then
			adduser --system --no-create-home --home /nonexistent --quiet --gecos 'irker daemon' --group irker
		else
			echo "irker user already exists, doing nothing."
		fi
		mkdir -p /var/log/irker
		chown irker:irker /var/log/irker -R
		;;
	abort-upgrade|abort-remove|abort-deconfigure)
		;;
	*)
		echo "postinst called with unknown argument \`${1}'" >&2
		exit 1
		;;
esac
# Automatically added by dh_systemd_enable
# This will only remove masks created by d-s-h on package removal.
deb-systemd-helper unmask irkerd.service >/dev/null || true
# was-enabled defaults to true, so new installations run enable.
if deb-systemd-helper --quiet was-enabled irkerd.service; then
	# Enables the unit on first installation, creates new
	# symlinks on upgrades if the unit file has changed.
	deb-systemd-helper enable irkerd.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 irkerd.service >/dev/null || true
fi
# End automatically added section
# Automatically added by dh_installinit
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ]; then
	if [ -x "/etc/init.d/irker" ]; then
		update-rc.d irker defaults >/dev/null
	fi
	if [ -x "/etc/init.d/irker" ] || [ -e "/etc/init/irker.conf" ]; then
		invoke-rc.d irker start || exit $?
	fi
fi
# End automatically added section
exit 0
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