postinst is in mosquitto 1.4.15-2.
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 56 57 58 59  | #!/bin/sh
# postinst script for mosquitto
#
# see: dh_installdeb(1)
set -e
setup_mosquitto_user() {
	if ! getent group mosquitto >/dev/null; then
		addgroup --quiet --system mosquitto
	fi
	if ! getent passwd mosquitto >/dev/null; then
		adduser --quiet --system --no-create-home --ingroup mosquitto --home /var/lib/mosquitto --shell /usr/sbin/nologin mosquitto
	fi
}
fix_permissions() {
	chown mosquitto /var/lib/mosquitto
	chown mosquitto /var/log/mosquitto
}
case "$1" in
	configure)
		setup_mosquitto_user
		fix_permissions
	;;
	abort-upgrade|abort-remove|abort-deconfigure)
	;;
	*)
		echo "postinst called with unknown argument \`$1'" >&2
		exit 1
	;;
esac
# Reload AppArmor profile
APP_PROFILE="/etc/apparmor.d/usr.sbin.mosquitto"
if [ -f "$APP_PROFILE" ] && aa-status --enabled 2>/dev/null; then
       apparmor_parser -r "$APP_PROFILE" || true
fi
# 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/mosquitto" ]; then
		update-rc.d mosquitto defaults >/dev/null
		if [ -n "$2" ]; then
			_dh_action=restart
		else
			_dh_action=start
		fi
		invoke-rc.d mosquitto $_dh_action || exit 1
	fi
fi
# End automatically added section
exit 0
 |