[ale] AARG! Manual software updates, Sun Java, LibreOffice, help

[Ron Frazier]

Michael H,

Hi.  I hadn't seen your name before.  I put your last initial there 
since we have about 4-5 Michael's in the group.  Welcome and thanks for 
the info.  I don't always reply just to say thanks, but I always 
appreciate any answers to my threads.  I'm going to take a look at the 
info you sent as well as other replies regarding Java, hopefully 
shortly, when I get some more time.  Right now, my shared printer is 
down after upgrading my PC's to Ubuntu 11.04.  I have this little 
Linksys PSUS4 stand alone print server which is refusing to cooperate.  
Fun, fun, fun.  I'm saving your message for another day though.

Sincerely,

Ron

On 11/09/2011 01:42 PM, Michael Hirsch wrote:
> On Sat, Nov 5, 2011 at 4:33 PM, Ron Frazier 
> <atllinuxenthinfo at c3energy.com <mailto:atllinuxenthinfo at c3energy.com>> 
> wrote:
>
>     I just finished spending an hour reading through a 14 PAGE printed
>     howto
>     document telling me how to uninstall old Sun Java from Ubuntu and
>     reinstall the new version and how to do the same thing EVERY time
>     there
>     is an update. ( If you're interested, here's the procedure:
>     https://sites.google.com/site/easylinuxtipsproject/java ) While I
>     appreciate the publisher of the web page making this available, my
>     general response is YOU GOTTA BE KIDDING! Now I get to spend HALF an
>     HOUR on EVERY COMPUTER updating Java EVERY TIME there is an UPDATE!!!
>
>
> Ye gods!  I hadn't read that.  Yes, that is a long set of commands.  
> Of course most of them are scriptable, but still...  And then there is 
> the fact that they don't really appear to work.  Following them will 
> give you the proper java, but not the proper javac, javaws, jexec, 
> keytool, etc.  I appear to have 30 files in /etc/alternatives related 
> to java, and those instructions seem to fix only one of them.
>
> The update-alternatives and update-java-alternatives do seem to have 
> the capability to link all 30 of those files to the right places, but 
> I've never gotten it to work.  So I've given up on it.  Too bad.
>
> Here's what works for me.  It takes about 5 minutes the first time, 
> then only a minute or so subsequently, not counting download time:
>
> Download the jdk from oracle and install it in /opt, or if you prefer 
> /opt/java.  So inside my /opt I have
> jdk1.4.2_19
> jdk1.5.0_22
> jdk1.6.0_22
> jdk1.6.0_23
> jdk1.6.0_24
> jdk1.6.0_27
> jdk1.7.0
>
> Now (as root) edit /etc/profile.d/java.sh and make it read (but 
> correct the version):
>
> export JDK_HOME=/opt/jdk1.6.0_27
> export JAVA_HOME=/opt/jdk1.6.0_27
> PATH=${JDK_HOME}/bin:$PATH
>
> Note that the file does not need to be executable.
>
> For bonus points, add the mozilla plugin:
>
> ls -lf /opt/jdk1.6.0_27/jre/lib/amd64/libnpjp2.so 
> /usr/lib/mozilla/plugins/libjavaplugin.so
>
> This will setup java for anyone who logs in and uses a sh-compatible 
> shell (including bash, of course).
>
> You might have to go around deleting old versions of the java plugin 
> if one is installed somewhere else.
>
> Now if you have multiple versions installed, you can globally switch 
> them by editing one file.  You need to restart your shell to have it 
> take effect.  You can also run '. /etc/profile.d/java.sh' in a shell 
> to point to whichever java it points to.  Copying that file to a 
> personal directory makes it easy to edit and switch your java without 
> affecting your users.
>
> Hope that helps,
>
> Michael

-- 

(PS - If you email me and don't get a quick response, you might want to
call on the phone.  I get about 300 emails per day from alternate energy
mailing lists and such.  I don't always see new messages very quickly.)

Ron Frazier

770-205-9422 (O)   Leave a message.
linuxdude AT c3energy.com

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