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Installing a SSL certificat on Apache Tomcat 5
I received a SSL certificat in the for of a PFX file and a password. I needed to install this on an Apache Tomcat. This whole thing gave me some issue, that I'm going to describe below along with how I fixed them.
The certicat issue by TDC SSL Server CA.
Configuration of Tomcat is made by editing the server.xml file, where the comments around the ( Read more... ) -
Installing Hadoop 1.0.4 on Ubuntu 12.04
I've been playing a bit with Hadoop. Below you'll find notes and screenshots showing how to install a simple development setup (on a virtual server).
You'll need
- A Linux Server. I'm using Ubuntu 12.04 LTS 64 bit, but any should do
- Java JDK 1.6_24 64 bit for Linux (jdk-6u24-linux-x64.bin) get it here
- Hadoop 1.0.4 (hadoop-1.0.4-bin.tar.gz) get it ( Read more... )
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Installing Redhat Enterprise Linux 6
The following screenshots shows how I installed Redhat Enterprise Linux 6 (RHEL6) on a virtual machine running in VirtualBox.
This is a very basic installation that I used for development.
I've added some short notes above each screenshot.
Just press enter to start installing:
( Read more... ) -
Keeping up with the Java Release cycle
Did you know that Java has a regular release cycle? Well, it has, and that means you'll be able to plan and prepare for future releases ( Read more... ) -
Adding more disk space using LVM
I had an old build server that was running low on disk space.
The server was virtual and it was running Ubuntu 10.10 configured with LVM.
LVM means Logical Volume Managment, and it's a virtual layer upon the physical disks (or virtual disks in this case). LVM makes it easy to expand the disk space without the need to move files ( Read more... ) -
Installing Cygwin Perl on Windows 7
(This is part three of my Perl for Java programmers guide)
Below is a simple step-by-step guide on how to install Cygwin Perl on Microsoft Windows 7. The instructions should work on most versions of Windows from XP and up.
The instructions are supported by a series of screenshots. I've made all the (uncropped) screenshots available for easy ( Read more... ) -
Installing Strawberry Perl on Windows 7
(This is part two of my Perl for Java programmers guide)
Below is a simple step-by-step guide on how to install Strawberry Perl on Microsoft Windows 7. The instructions should work on most versions of Windows from XP and up.
The instructions are supported by a series of screenshots. I've made all the (uncropped) screenshots available for easy ( Read more... ) -
Hello World in Perl
The mantra There's More than One Way to Do It is well known in the Perl community. Even for something as simple as a "Hello World" program. On Rosetta Code there's three examples of "Hello World" in Perl.
I will show you only two other variantions.
The first one is a small script, that will demonstrate some aspects of Perl. Here it is:
#!/usr/ ( Read more... ) -
The anatomy of a README file
I like to put a README file in the root directory of all my software projects. And as I would never do any kind of software development without using some kind of version control (e.g. Git), the README will also be in the root of the repository ( Read more... ) -
Perl for Java programmers
A co-worker asked if/how/why he should learn Perl. He wanted a complimentary language to Java, which is what he mainly uses. Something for quick scripts, one-shot conversions, experimentation etc. Perl fits the bill perfectly.
There's really, in my opinion, only two other options: Python and Ruby. Both are great languages, but I know (and love) ( Read more... )
