From: "Matthew K. Williams" <matt@...>
Date: 2011-05-13T02:26:24+09:00
Subject: Re: Jruby -v failing with possible Java version issue


On Fri, 13 May 2011, Ruby Student wrote:

> Hello team,
>
> I installed jruby 1.6.1, as fully described below.
> When I run the *jruby -v* command, it fails. Please see output at the end of
> this post.
>
> Downloaded file:
> *jruby-bin-1.6.1.tar*
>
> When I verify Java on the Oracle site, I get the following:
>
>        Your Java is Working
>        Java update available
>
>        Your Java configuration is as follows:
>
> Vendor: *IBM Corporation* <http://java.com/>
> Version: *Java SE 6*
> Operating System: *Linux 2.6.32-71.24.1.el6.x86_64*
> Architecture: *amd64*

I'm not sure if the IBM Java supports all the flags which Sun/Oracle java 
supports.


> root@myserver # *echo $PATH*
> /sbin:/usr/sbin:/usr/local/sbin:/opt/gnome/sbin:/root/bin:/usr/local/bin:/usr/bin:/usr/X11R6/bin:/bin:/usr/games:/opt/gnome/bin:/opt/kde3/bin:/usr/lib64/jvm/jre/bin:/usr/lib/mit/bin:/usr/lib/mit/sbin:
> */opt/jruby/bin*
> :/usr/local/bin:/usr/local/sbin:/suptools/bin:.:/opt/jruby/bin
>

Your path looks really weird here.

Also, I think that jruby requires the jdk, not the jre.

> When I try *jruby -v*, this is what I get:
>
> root@myserver  # jruby -v
> JVMJ9VM007E Command-line option unrecognised: -client
> Could not create the Java virtual machine.
>

try a

which java

and a

java -version

But I do believe there's an issue with IBM's java version.

Matt