Chances are you installed Open JDK, which ships as default in the package manager and you’re having compatibility issues with some of the apps requiring Java native Java Development Kit. Not only can mismatch of different vendors cause havoc, but also version issues especially between JDK 6 and JDK 7.

Installation of Oracle Java JDK 7 can turn into a major headache, but it doesn’t have to. Here are the steps for a straight forward Java JDK 7 installation in Ubuntu ...

Linux Foundation director Jim Zemlin, has some advise for Linux world professionals. He was as of late quoted saying, “Linux’s increasing use across industries is building high demand for Linux jobs despite national unemployment stats.

Linux.com reaches millions of Linux professionals from all over the world. By providing a Jobs Board feature on the popular community site, we can bring together employers, recruiters and job seekers to lay the intellectual foundation for tomorrow’s IT industry.”

Current requirement is for 8,000 Linux-based technical ...

Growing companies at some point are faced with the increased workload to setup, configure and maintain their servers and applications. Administrators try to script repetitive tasks and ultimately look for solutions that are scalable and provide a central management tool base. There are several software packages available, commercial and open source ones.

Puppet is probably the most used open source configuration management package available today and more system administrators and software developers are interested in setting it up within their environment. ...

Before we install and configure puppet server (puppetmaster), ensure that your network is properly setup with static ip addresses and that servers can communicate with each other.

Configure Puppet Server on Ubuntu 10.10 is easy and straight forward. It’s those subtleties about the network configuration and necessary puppet recipes and files that can make our lives miserable.

In this walk thru, we’re using the package manager of Ubuntu. You can simply use the one ...

I hope you had fun installing the Puppet Master in our previous article. If you haven’t done that step, I highly recommend doing before attempting to install the client.

After we have configured our network and installed, configured and verified our Puppet Server (puppetmaster), it’s now time to install and configure puppet client, and set it up to receive a signed certificate and puppet recipes. Again, if you haven’t performed those prerequisite setups, please start with Setup Puppet to configure your ...

Installing Redmine on any system has been a daunting task for many, especially working thru countless dependencies and linking apps to make the application available via Apache.

Since Ubuntu 10.04, Redmine can now be installed via apt or aptitude, and no doubt the process is much easier, but by no means just as straight forward as we’re used to with other apps available from the repositories.

To get Redmine up and running over Apache on Ubuntu 10.04, we are going to install redmine passenger and these ...

Using diff to create batch files and subsequently running them against select files is such a convenient way to update, fix or change existing files, but many developers and system administrators simply don’t know much about them.

Here is a quick diff and patch example, how to use diff and apply changes for select files. Use diff –help to check out more options and flags.

NOTE: pay caution when using patching, any mistake or error are executed without warning or undo feature. ...

How to clean up and edit the Ubuntu Grub2 boot loader menu differs quite a bit from previous versions. As Ubuntu nominated the new version 2 of the Grub boot manager as of 9.10, so they did away wit the old and problematic menu.lst file.

Grub2 boot loader is a leap forward in many ways, and most of the annoyances from menu.lst are gone. Yet, if you don’t clean up old versions of kernel entries, the boot list can quickly get ...