Running Multiverse servers on Ubuntu Linux

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You must take some special steps to run the Multiverse servers on Ubuntu Linux.

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Installing and running Java

Ubuntu comes preinstalled with a non-standard version of Java (GNU Java) that will not work with Multiverse. So, you must:

  1. Install the standard Sun Java distribution (see Getting Started for link).
  2. Make sure that the "java" command invokes it and not GNU Java.

I found some docs on the web that might be helpful: https://help.ubuntu.com/community/Java#head-fef9352fb26820bb774df978180c9dd3a60e777b

You can generally confirm the version of Java with the command 

java -version

This result of this command should yield the version of Sun Java you downloded, not Java 1.4.2, which is apparently the default that comes with Ubuntu. For example: 

java version "1.5.0_08"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_08-b03)
Java HotSpot(TM) Client VM (build 1.5.0_08-b03, mixed mode, sharing)


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Starting the servers

When using Ubuntu, you may get this error message when you try to run multiverse.sh: 

Syntax error: "(" unexpected

To correct this, edit multiverse.sh and replace the first line of the file: 

#!/bin/sh

with this: 

#!/bin/bash

Save the file and run it.

Fix issues with #!/bin/sh in ubuntu edgy eft

Ubuntu took a long time standard and changed it, thus breaking a number of applications. Have you ever tried to install something on Ubuntu or run an old script, and had an inexplicable error? It may well be caused by the /bin/sh bug.

What they did:

The file /bin/sh has been symlinked to /bin/bash. bash is the most common linux command line shell. Because of this, most application developers start their shell scripts with the line: 

    #!/bin/sh

and they expect that their shell script will run in the bash shell. Ubuntu has symlinked /bin/sh to /bin/dash. dash is a Debian derived light version of bash, and for some reason, it often breaks scripts that expet the bash shell. Scripts often break.


How To Fix:

Simply change the symlink so that it points to /bin/bash. To do this, open a terminal, and type the following: 

   * sudo rm -f /bin/sh
   * sudo ln -s /bin/bash /bin/sh

From now on your scripts should work as their authors expected.

Retrieved from "http://update.multiverse.net/wiki/index.php/Running_Multiverse_servers_on_Ubuntu_Linux"
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