EEE (Asus PC) in France

25 February 2008

I didn’t notice the impact and “caffouillage” SFR did with the EEE in france : is worth reading some articles.

Looks like a nice way to introduce another OS to the masses.

By the way my new blog is in

Fedora 8 and Java

15 January 2008

Some more informations on Fedora 8 and Java. A new hard drive was a good excuse to do a fresh Fedora install. Even with a fresh install, I had to remove all the i386 package (I have a x86_64 : no need to duplicate all package, this is a known problem of Fedora) and legacy gcj stuff.

I installed Java 7 since it is the future. But since it doesn’t have the crypto features yet, and since they are required for Glassfish, I installed the SUN JDK 6 as well.

So informations are bit misleading on the topic. Here is what I like to do :

Install jpackage-utils, then SUN JDK 6 RPM, then JPackage -compat package for the SUN rpm : java-1.6.0-sun-compat-

Manage the Java 6 / 7 switch with galternatives or (command line alternatives)

Remember Java 7 IcedTea install tips :

Mauriat Miranda tips and added the JDK as well (-devel) : sudo yum install java-1.7.0-icedtea java-1.7.0-icedtea-devel java-1.7.0-icedtea-plugin

I tested as per Gregory Gulick’s tips and it was OK.

Remote access to Netbeans

11 December 2007

Using Netbeans remotely with FreeNX, I had some trouble with the display not refreshing very well.
The solution is simply to uses sun.java2d.pmoffscreen, i.e.  add the option -J-Dsun.java2d.pmoffscreen=false in etc/netbeans.conf.

There should be a way to detect if the display is local or not reading the DISPLAY env variable :

…j2se/src/solaris/classes/sun/awt/ , see _isDisplayLocal method …

I have to try with the J2D_PIXMAPS=shared/server env variable too.

Netbeans, Glassfish with JSF dev with FreeNX

28 November 2007

So it works. OK I had to add 1Go RAM (1 Go wasn’t enough). I should have get 2Go from the beginning ! I had to install SUN JDK 6 because IcedTea didn’t work with Glassfish nor Netbeans, there is a strange security problem.

But now :

  • I can remotely connect to my home with FreeNX
  • Launch Netbeans 6, Glassfish, JavaDB and develop JSF
  • Epiphany is configured as the web browser (lighter than Firefox)
  • XFCE 4 as the desktop environment (again, lighter than Gnome or KDE)
  • Fedora 8 x64 with some services (FTP, HTTP …) running

Fedora 8 upgrade and Java

16 November 2007

I upgraded from fedora 7 to 8. (Via yum : wasn’t exactly smoove, but not too bad).

Now I installed Java 1.7 IcedTea as per Mauriat Miranda tips and added the JDK as well (-devel) : sudo yum install java-1.7.0-icedtea java-1.7.0-icedtea-devel java-1.7.0-icedtea-plugin

I tested as per Gregory Gulick’s tips and it was not OK.

So I launched galternatives and selected Java-1.7.0 for Java. Then it was OK.

Next I installed Eclipse (yum install eclipse), launched it, checked that it was using Java 1.7 : OK, then did a quick “Hello World” example and it went well. After some thinking I don’t see a real plus in having a RPM managed Eclipse. I can download it via the standard Eclipse way and I will be able to update it more conveniently.

Then Netbeans 6 and Glassfish have a problem related to keytool and keystore :

[2007-11-16 12:50:43.772]: executing command: /home/brunox/bin/glassfish-v2/bin/asadmin create-domain --interactive=false --adminport 4848 --user admin --passwordfile /home/brunox/bin/glassfish-v2/nbi-14359.tmp --instanceport 8080 --domainproperties http.ssl.port=8181 --savemasterpassword=true domain1, in directory: /home/brunox/bin/glassfish-v2
[2007-11-16 12:50:45.519]: [stdout]: Using port 4848 for Admin.
[2007-11-16 12:50:45.519]: [stdout]: Using port 8080 for HTTP Instance.
[2007-11-16 12:50:45.519]: [stdout]: Using default port 7676 for JMS.
[2007-11-16 12:50:45.519]: [stdout]: Using default port 3700 for IIOP.
[2007-11-16 12:50:45.520]: [stdout]: Using port 8181 for HTTP_SSL.
[2007-11-16 12:50:45.520]: [stdout]: Using default port 3820 for IIOP_SSL.
[2007-11-16 12:50:45.520]: [stdout]: Using default port 3920 for IIOP_MUTUALAUTH.
[2007-11-16 12:50:45.520]: [stdout]: Using default port 8686 for JMX_ADMIN.
[2007-11-16 12:50:45.520]: [stdout]: Domain being created with profile:developer, as specified by variable AS_ADMIN_PROFILE in configuration file.
[2007-11-16 12:50:47.275]: [stdout]: Security Store uses: JKS
[2007-11-16 12:50:59.504]: [stdout]: keytool error: Invalid keystore format
[2007-11-16 12:50:59.504]: [stdout]:
[2007-11-16 12:50:59.504]: [stderr]: CLI130 Could not create domain, domain1
[2007-11-16 12:50:59.555]: [return]: 1
[2007-11-16 12:50:59.555]: ... command execution finished
[2007-11-16 12:50:59.557]: org.netbeans.installer.utils.exceptions.InstallationException: Failed to create the default domain
[2007-11-16 12:50:59.557]: at org.netbeans.installer.products.glassfish.ConfigurationLogic.install(
[2007-11-16 12:50:59.557]: at org.netbeans.installer.product.components.Product.install(
[2007-11-16 12:50:59.557]: at org.netbeans.installer.wizard.components.actions.InstallAction.execute(
[2007-11-16 12:50:59.558]: at org.netbeans.installer.wizard.components.WizardAction$
[2007-11-16 12:50:59.558]: Caused by: org.netbeans.installer.utils.applications.GlassFishUtils$DomainCreationException: "Could not create domain - error CLI130 occurred.
[2007-11-16 12:50:59.558]: at org.netbeans.installer.utils.applications.GlassFishUtils.createDomain(
[2007-11-16 12:50:59.558]: at org.netbeans.installer.utils.applications.GlassFishUtils.createDomain(
[2007-11-16 12:50:59.558]: at org.netbeans.installer.products.glassfish.ConfigurationLogic.install(
[2007-11-16 12:50:59.558]: ... 3 more

I guess  that I will simply install Sun Java 6.

All this through a FreeNX remote access.

Could your PC participate to Open Source ?

10 October 2007

I feel frustrated not to participate enough in Open Source. But my PC is running 24/24 …

Would it be possible to use that power to fuel OpenSource ? Currently I run Folding@home, bittorrent, hesitated about TOR, but would it be possible to be part of a cluster of some kind ? To share some CPU or HD ?

I guess that at some point Linux PC will get a critical mass of participating potential that should be given back.

Would it be possible to give Open Source Project the same distributed system that
Google & IBM giving students a distributed systems lab using Hadoop.

Konsole session save and restore

14 September 2007

It is possible to save and restore a “Profile” with multiple “Sessions” via Konsole Help (XTerm emulator).

A Session is a console, a shell, whatever is opened in a new tab. The Profile is a group of Sessions.

So once you have opened many shells, connected to distant SSH servers, named your tabs and typed some command like tail -f /var/log/... | grep -v boring

What if you crash or reboot your machine? Redoo all this work ? No ! Because you would have save your Konsole Menu : Settings ... / Save Sessions Profile ... You just type a name MySessions and Konsole will create the file in /home/username/.kde/share/apps/konsole/profiles/.

You can easily restore the Sessions with konsole --profile MySessions You can see the profile list with konsole --profiles.

Even better, you can edit the file vi /home/username/.kde/share/apps/konsole/profiles/MySessions , this way, you can type in the commands like tail -f ...

Sadly there is no menu to restore the session, so you have to launch konsole to launch konsole --profile MySession and then close the first konsole …

References :