Questions[startup](ubuntu)

I'd like to startup an Apache Spark cluster after boot using the following command:

sudo ./path/to/spark/sbin/start-all.sh

Then run this command when the system prepares to reboot/shutdown:

sudo ./path/to/spark/sbin/stop-all.sh

How can I get started? Is there a basic template I can build on?

I've tried to use an extremely simple (file: /lib/systemd/system/spark.service):

[Unit]
Description=Spark service

[Service]
ExecStart=sudo ./path/to/spark/sbin/start-all.sh

Which doesn't work.

Upon trying to make a startup disk (USB) for Ubuntu 12.04, the system prevented boot loader installation. I'm getting message:

Error synchronizing after initial wipe: Timed out waiting for object (udisks-error-quark, 0)

Can I still use the startup disk?

How can I deactivate Bluetooth on system startup?

I have a script I would like to run when my system starts and have put it in /etc/rc.local, but it doesn't work. How can I enable it to run on startup?

How can I run scripts automatically when Ubuntu starts up so I don't have to run them manually after startup?