--noconsole parameter does not work

So I'm going along ladada making a server and it's on Ubuntu Server Edition. Since SE only has one thread, I saw the --noconsole parameter, I did it and it still output. Regardless, how can I make it so that the server will run without having to keep an ssh open the entire time?

As well, whenever I run the server, it overwrites my changes to the server.properties file. Why?

 

First of all, I would recommend you to study something like this:
http://ftacademy.org/materials/fsm/2

And after that, look at the nohup command and put that in a shell script.

Then to get in touch with your minecraft server instance, take a look at rcon

If you have no understanding of the above, learn it, or leave it to others to run the server.

Regarding the overwriting of the server.propertied - do you shut down the minecraft server instance before editing?