Keep java session alive.

Hello experts,

as a hobby I'm trying to run a minecraft server (minecraft.net)

The server runs great but if I close the console the server stops.

The startup command is: java -Xmx1024M -Xms1024M -jar minecraft_server.jar nogui

I'm running ubuntu 10.04

how can I keep it running with the console closed?
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kinetik20Asked:
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zicevaConnect With a Mentor Commented:
Two solutions:

java -Xmx1024M -Xms1024M -jar minecraft_server.jar nogui &
(add an & at the end)

OR

Install screen end run the server inside
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kinetik20Author Commented:
Ziceva,

Thanks for the fast reply would I just sudo apt-get install screen ?
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torimarConnect With a Mentor Commented:
On many servers, like Debian, "Screen" is installed as part of the default distribution. I'd expect it to be as such on Ubuntu as well, but on the other hand, running the apt-get command will not do any harm.

Once installed, screen will take a time to get used to. It basically creates virtual terminals that will continue to run when the user has logged out. The tricky bit is to navigate those virtual terminals from the real terminal.

Try to start your server with a string like this:

screen -A -m -d -S mcraft java -Xmx1024M -Xms1024M -jar minecraft_server.jar nogui

"mcraft" is a random name I chose to identify the screen, you may choose any identifier you like (and remember).
This command creates a virtual terminal called "mcraft", exits this terminal and lets it run in the background. Log out to see if it works.
To re-attach to the terminal that runs the server, use:
screen -r mcraft
This takes you to all the console output your game server might have generated. To leave it, hit:
CTRL+a d

Once inside your virtual terminal, you may want to be able to check all console output, past the usual number of lines, in case there has been a malfunction etc. Type:
CTRL+a ESC
Then scroll up and down with the arrow keys.

For more commands, like see 'man screen' or check here: http://aperiodic.net/screen/quick_reference
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jar3817Connect With a Mentor Commented:
Or just use nohup... the process will go into the background and you can logout without it closing.

# nohup java -Xmx1024M -Xms1024M -jar minecraft_server.jar nogui
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kinetik20Author Commented:
Thanks so much everyone for your help!
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