/usr/lib/x86_64-linux-gnu/moonshot-ui/moonshot-dbus-launch is in libmoonshot1 0.7.2-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 | #!/bin/sh
mkdir ${HOME}/.cache 2>/dev/null
eval `dbus-launch --sh-syntax`
trap "kill $DBUS_SESSION_BUS_PID" hup pipe int term
echo $DBUS_SESSION_BUS_ADDRESS
read foo
kill $DBUS_SESSION_BUS_PID
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