Tag: ubuntu

Here you can see a listing of all the posts tagged with ubuntu on this website.

  • Geoserver with OpenJDK on Ubuntu? I guess not

    Posted on Aug. 18, 2008 at 15:44 +0200 Tagged with , , , ,

    Or at least not for now. Today I had to install Geoserver on a new Ubuntu 8.04 server within a current Tomcat (6.0.18) for a colleague and was greeted by a nice error message related to casting and the javax.imageio package (or earlier on with a ClassDefNotFound exception related to the same package). The problem here seems to be that the stable Geoserver 1.6.x is not really compatible with OpenJDK yet.

    So for now the fastest way to get it working again (that is, if you don't absolutely require OpenJDK) to move back to the old Sun Java 6 package by first installing "sun-java6-jdk" and then by switching to it using update-alternatives --config java.

    At first I thought I had to install some external libraries and miserably failed to install the jai_imageio binary package thanks to the package being broken and naturally Sun has to have internal checksums so that you can't easily fix this. But luckily this has become a non-issue with the move back to Java6 for now, but I'm really curious if I just messed up something there or the missing jai_imageio package was really the problem here. I guess, this is a problem for later, now that I have a workaround in place ;-)

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  • SSH Commands on Ubuntu Servers

    Posted on Jan. 5, 2008 at 15:45 +0100 Tagged with , ,

    Fighting with environment variables via SSH on an Ubuntu server? You're definitely not alone there. Normally when running ssh <server> <command> the user's ~/.bashrc should be sourced (if the user has Bash as shell) but for some reason, none of my variables got loaded.

    After quite some googling, I found this post that described the same problem I had but also contained a simple solution in the comments section: Actually reading the .bashrc ;-) Ubuntu's default .bashrc starts with following line:

    [ -z "$PS1" ] && return

    The problem is now, that this condition is actually true via ssh <command>. To solve this you have more or less 2 options: Add you stuff before this line or remove this line.

    Just stupid that it took me about an hour to find this problem ;)

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