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[SOLVED] Re: Installing a JRE plug-in

andy wrote:
andy wrote:
Bob Proulx wrote:
andy wrote:
Jeff D wrote:
Thats odd, it should create a symlink to /etc/alternatives/mozilla-javaplugin.so


what does update-alternatives --list mozilla-javaplugin.so give you?
it should give you something like this:
It gives me something very similar:

I wasn't aware of that command to be honest, so hence was using find and whereis.

That may be a source of a problem.  If you have previously created or
modified the alternatives symlinks, even if you did not know at the
time that they were part of the alternatives, then from there on
forward the update-alternatives command will respect your
modification.  It will show this by listing the symlinks as 'manual'
instead of 'auto'.  This is because Debian's alternatives system tries
hard not to override the local admin's explicit configuration.  If you
told it something then it will respect that.

I have seen this confusion cause trouble with java in particular when
people installed competing versions simultaneously.  I have had people
install a manual installation of java placing symlinks here and there
but never got it working.  Later they thought that installing the
package version would "fix" their problem.  But the existence of their
manually created symlinks prevented the package's alternatives from
being able to be automatically installed.  It looks to the system as
if there is a manual override already in place!

Here is a previous rant on the subject that I think is a good
introduction to using the Debian alternatives system.


Thanks - now onto symlinking. Do I have to do this with Konqueror, Galeon, and Opera as well as Iceweasel?

It should be completely automatic.  Assuming the 'auto' designation.
You can adjust these using update-alternatives.  Try these:

  update-alternatives --display mozilla-javaplugin.so

  update-alternatives --auto mozilla-javaplugin.so


Thanks Bob

That was a useful overview to alternatives: I wasn't aware of that, and how (seemingly) prevalent it is with Debian. Wouldn't you guess it ... yep, when I run I am showing manual. I've corrected that now to auto.

I also note from Jeff's post that the site I was using to test this with threw up the same response to his testing, so that increases the likelihood of it being a site issue.

Unless I come across this issue again, for now I'll say that this is resolved.

Thanks all for your helpful suggestions.



Actually, after setting this to auto, I have found another site that is asking to install a java plugin. Here is the output of sudo update-alternatives --display mozilla-javaplugin.so

mozilla-javaplugin.so - status is auto.
link currently points to /usr/lib/jvm/java-6-sun/jre/plugin/i386/ns7/libjavaplugin_oji.so /usr/lib/jvm/java-6-sun/jre/plugin/i386/ns7/libjavaplugin_oji.so - priority 63 Current `best' version is /usr/lib/jvm/java-6-sun/jre/plugin/i386/ns7/libjavaplugin_oji.so.

Now I am really confused. Is it best to set it manually or automatically?


Please disregard this - now sorted.



"If they can get you asking the wrong questions, they don't have to worry about the answers." - Thomas Pynchon, "Gravity's Rainbow"

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