Ever wanted to delete a directory tree in Java on a POSIX system? Funny thing: There is no safe way to do it. Java does not yet provide a way to figure out whether or not a File object is a softlink and if your directory contains one of these, pointing outside of the intended tree, you are screwed. Enter the wonderful world of JNI to work around this problem, till Dolphin comes around.

I find myself going back to a few unrelated articles about how to use git-svn because I keep forgetting the exact commands. Also not everybody is familiar with the concept of using subversion (svn) and git together. Here is a good guide.

There is no such thing as parallelism in Ruby. Instead of thinking in threads, you should think about process parallelism, due to the Global Interpreter Lock - a look at what that means and why.

Ok, so Android exists. We finally have hardware, we even have source code. What we didn't have was some game changing moment whereby we suddenly got control of our mobile phones. You know, the moment that Google has promised us for the last year. The reality of the situation is actually quite indicative of the attitudes in the cell phone world that even Google is powerless to affect. So, anyone who has actually gotten a G1 and has spent the time to try to do anything awesome with it have been utterly disappointed by the fact that we are just regular users on our own boxes: T-Mobile didn't give us root, being afraid of what we might do.

Traditionally, windows users (including myself) are afraid of installing linux in their machine because of a fear that if something goes wrong, linux might spoil their machine or render it unusable. Not anymore.

In our performance exploration of Ubuntu we now have additional tests to publish this morning. This time around we're switching out the hardware we're testing on to Intel's newer Core 2 series and we're comparing the performance of the x86 and x86_64 editions of Ubuntu 8.10 against Apple's Mac OS X 10.5.5 operating system.

I switched to Ubuntu Ibex this week from a lifetime of Windows Xp, It was easy, and I'm enjoying the experience so far!

Many developers are not aware of everything an htaccess file can do for them. I have provided the following cheatsheet as a reference for a handful of the more used functions.

Some PRNGs (pseudo-random number generators) are better, some are worse.

With the success of Fedora in Linux distributions, Fedora 10 is perhaps the most anticipated operating system from their library. A faster and advanced distribution is what is proposed by them. Fedora 10, codenamed Cambridge, is set for release on November 25, 2008.

This article takes a look at ten tips, tricks and pitfalls in Awk programming language. They are mostly taken from the discussions in #awk IRC channel.

From Geek Hero Webcomi.

If you’ve ever used SSH to connect to a server, you ‘ll know its limitations: if you want to open a new window, you’ll need to create a second SSH connection to the server. And if the connection breaks during the SSH tunnel, you’ve lost your progress. This is where Screen comes in.

ENG : If you want to see maven in colour, you can just add an little awk in a script :) FR : Vous voulez voir maven en couleur, il suffit d'ajouter un petit awk dans un script :)

Java web applications don't need an Apache web server. In memory constrained systems like virtual private servers (VPS) you may get rid of the Apache web server to save memory and gain speed. The idea is to use iptables to replace port 80 in requests to port 8080 of the tomcat connector. Special problems on VPS systems are solved.

Sun has recently been hit by a shovel full of bad financial news. For Java programmers, the most ominous thing may be that Java isn't even being discussed.

I have always preferred KDE over GNOME. But, the KDE 4 have given me lot of headaches. My be it's time to switch to GNOME of Xfce with Ubuntu 8.10 release.

Okay,okay ... i know the headline is a little bit provoking. But when you think about some comments from Linux proponents you could think so. In the last few weeks i´ve heard one sentence quite often: "Why you you still develop Solaris? You should contribute to Linux!" from people administering Linux systems. And you could read at other places, that Solaris is irrelevant, that there is nothing worth of mentioning it or even for an integration to Linux. Just think about the Zemlin quotations!

Came across this fascinating article on ZDNet, they say a picture is worth a thousand words and that’s certainly true in this case. The first show’s the system calls that occur in a Linux Server running Apache and the second image is of a windows Server running IIS.

Demonstrates how to create a simple application that interacts with terminal standard I/O ports to provide an IPC pipe based between processes

To get some relatively useful numbers and real web experience with the new Flash player, we decided to compare how well the last Flash 9 release for Mac OS X and Linux performed against version 10 on a number of sites. The most significant of these sites is GUIMark, a benchmark that puts various web-based technologies like Flash and Silverlight through their paces, all while providing frame rate averages for the duration of the test.

As a long time developer and Linux user, I've noticed a trend among other users going toward Macs. I've always had a hard time dealing with the keyboard wackyiess and instability (that would even offend windows users) of the Mac. Recent events have presented me with a gargantuan iMac so, I've decided to give it a serious try.

Pretty much what it says on the tin for Java and Unix deployment ...

Today more than ever, I'm really angry about Adobe. They have just released a brand new Flash 10 plugin with a very annoying bug which is there for months

Create the application directory structure. For this example, I'm using org.etherplex.example.JarExample. I'm going to make a project directory called simply "project". I'm assuming Linux/OS X here, Windows users need to adjust this or install Cygwin.