Started Minecraft in background, can't get it back to foreground.

Shimdidly · 03-21-2012, 03:58 PM

I'm on Ubuntu Server 11.10

Here's what I did:

I used this code for start.command, note the '&' at the end

Code:

#!/bin/bash
java -Xms256M -Xmx256M -jar minecraft_server.jar nogui &

I went ahead and ran the command
Minecraft started normally

Code:

shimdidly@diwars:~/minecraft$ ./start.command
shimdidly@diwars:~/minecraft$ 177 recipes
27 achievements
2012-03-21 14:21:26 [INFO] Starting minecraft server version 1.2.3
2012-03-21 14:21:26 [WARNING] To start the server with more ram, launch it as "java -Xmx1024M -Xms1024M -jar minecraft_server.jar"
2012-03-21 14:21:26 [INFO] Loading properties
2012-03-21 14:21:26 [INFO] Starting Minecraft server on *:25565
2012-03-21 14:21:26 [INFO] Preparing level "David is Beast"
2012-03-21 14:21:26 [INFO] Default game type: 0
2012-03-21 14:21:26 [INFO] Preparing start region for level 0
2012-03-21 14:21:27 [INFO] Preparing spawn area: 60%
2012-03-21 14:21:28 [INFO] Done (1877834749ns)! For help, type "help" or "?"
shimdidly@diwars:~/minecraft$ jobs

jobs returned nothing. I read somewhere that all I need to do to put a process in the foreground again is to use 'fg %1', but nothing at all appeared for jobs, and 'fg %1' returns 'no such job'

unSpawn · 03-21-2012, 06:25 PM

Kill the process. Then run Minecraft inside 'screen'. Screen sessions can be detached and re-attached easily. See 'man screen' for more.

Shimdidly · 03-21-2012, 08:06 PM

Done, thank you. Screens accomplishes this very nicely. So I take it is possible then for a program to fall into a "black hole" so to speak so it's still running but there's no way to ever see it again?

unSpawn · 03-22-2012, 03:42 AM

I think you answered your question yourself, yes? ;-p

arashi256 · 03-22-2012, 04:41 PM

I usually just use: -

nohup java -Xms256M -Xmx256M -jar minecraft_server.jar nogui >> ~/log/minecraft.log &

...but I don't see what else you'd need to achieve aside from simply running the server process. Can you manipulate the Minecraft server via some sort of foreground command line or something that requires you to bring it back to the foreground?