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I use Ubuntu and what I have in mind is this:

1) Create a folder in Ubuntu One to save my minecraft game 2) Make the new location the default location in minecraft.

This way, I would be able to play my world on a computer A, exit and save. Ubuntu One will synchronize the saved game with every computer set on my Ubuntu One account.

On computer B, I turn on minecraft, and access my previously saved game and all the new changes I made on computer A, from computer B!

With this configuration I should be able to play around the world seemlessly.

I've posted this here because my problem is not an Ubuntu problem, it's a minecraft one.

How can I configure minecraft to access this folder in Ubuntu One. Which piece of code should I change?

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I don't really think that's a question you should be asking on this site. Since this website is about the game and not about network problems – Sir Ksilem May 6 '11 at 9:06
I even think it's better to set up a server by yourself then. – Sir Ksilem May 6 '11 at 9:06
It's not a networking problem. It's a file configuration problem. The networking part is solved. – Nicolas de Fontenay May 6 '11 at 9:06
But with a server I need a fixed IP address and some sort of hosting. I don't have the guarantee that the computer is turned on at home if I'm roaming. – Nicolas de Fontenay May 6 '11 at 9:07
If Ubuntu One can't be configured to backup specific directories, you'll have to place a symbolic or hard link to the Minecraft save in whatever directory it does look in. You can't tell Minecraft to look in a different location (not without any modification, at least). – Michael Madsen May 6 '11 at 9:27
up vote 9 down vote accepted

I can't test it right now (At work) but I believe Minecraft stores its configuration data (and world data) in "$HOME/.minecraft".

If you replace that directory with a symlink to a folder in the Ubuntu One folder it should use that new folder to store it's data, if you do the same at a different computer the game shouldn't know the difference.

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Aah sorry, noticed the comments already mentioned this to late, still, I think it should work. – Kevin van der Velden May 6 '11 at 10:13
FWIW, I use the same technique with Dropbox and it works great too. – Brant May 6 '11 at 13:51
@Brant — And it works a whole lot better since the region format conversion. Syncing dozens of files makes Dropbox much happier than syncing tens of thousands of files! – Ben Blank May 6 '11 at 16:26

Create a symbolic link to the Ubuntu One folder, using:

ln -s /path/to/ubuntu/one /path/to/minecraft/folder

Then make sure you sync properly and then it should work.

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