Chaos Mind getting into order

Archive for the ‘Free’ Category

Packt Publishing is offering the book “Learning VirtualDub: The complete guide to capturing, processing and encoding digital video“.

Unfortunately, VirtualDub is for Windows only. If you have interest about it, go grab your copy.


Devido ao volume de visitas que recebo no post “Criar calendários de papel para qualquer ano!“, resolvi ajudar os visitantes fornecedo-lhes links directos da informação que procuram.

Assim sendo, quem quiser pode consultar o calendário para 2009 com os devidos feriados portugueses para impressão. Se quiserem podem alterar o formato ou os parâmetros de criação do calendário.

Para aqueles que são mais adeptos das versões electrónicas, podem adicionar o meu calendário ‘Feriados Nacionais Portugueses‘ disponível no google calendar, já com os feriados actualizados para 2009, em formato XML, ICAL ou HTML.

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Mooshak is a system for managing programming contests on the Web. Mooshak’s basic features include automatic judging of submitted programs, answering to clarification questions about problem descriptions, reevaluation of programs, tracking printouts, among many others [reference: Mooshak’s website].

Since I want to have a dedicated server for it (thanks, Algardata), I had the oportunity to install on a fresh debian etch system. Unfortunately, the installation manual is very incomplete (even the README file bundled with it), so I created this small step-by-step tutorial what will help you to install it flawless.

Warning: This rough tutorial was the solution to install mooshak only. Mooshak configuration, setting users, competitions, etc, is far from the scope of this tutorial.

1 – Requeriments:

For this tutorial I used a debian etch 4.0r3 network install CD and I installed the basic system and nothing more.

Mooshak needs the following software to work:

  • Tcl 8.3 or greater;
  • Apache 1.2 or greater;

Well, in my case I need a little more, because this is a very basic system. To be able to install Mooshak, it’s needed to install:

  • xsltproc (version: 1.1.19)
  • lpr (version: 2006.11.04)
  • rsync (version: 2.6.9)
  • gcc (version: 4.1.1)
  • libxm2-utils (version: 2.6.27)

The version number next to each package it’s the one that I’ve installed. It doesn’t mean that it can’t work with a minor version, but I don’t have that knowledge.

2 – Requirements installation:

To install it all at once:

aptitude install tcl apache2 xsltproc lpr rsync gcc libxml2-utils

This command line worked fine for me. I just recommend to see which extra packages it would install, but they are safe and expected.

3 – Mooshak installation

Now our box is ready to install Mooshak. Just download the lastest stable version and install it:

% tar xzf mooshak-version.tgz
% cd mooshak-version
% su	
# ./install
Prerequisites Ok. Installing Mooshak on debian, Apache 2.2
home dir created
data.tgz copied
source.tgz copied
setting file permissions ... done
connecting to host [your-server's-name] ... connected!
Mooshak installation seems OK

You can check it from the webserver http://%5Byour-server’s-name%5D/~mooshak/cgi-bin/info

4 – Configuring Apache2

Since mooshak site it’s from a system user (mooshak), you will need to activate userdir module:

# a2enmod userdir

Next step is to configure /etc/apache2/mods-available/user-dir.conf and add the following lines between IfModule section:

        <Directory /home/*/public_html/cgi-bin>
Options +ExecCGI -Includes -Indexes
SetHandler cgi-script

Now, it’s time to reload the apache2 server:

/etc/init.d/apache2 reload

Final Thoughts

Mooshak have big lacks of documentation and it’s build in TCL, which it doesn’t help to be widely adopted. Meanwhile, it’s quite popular among portuguese universities because of programming contests, or even it’s used in programming classes to test students.

I would like to see a mooshak version using a more popular language (PHP, Ruby, JAVA, etc.).

Finally, I invite everyone to help me to keep this tutorial up-to-date.


It’s a interesting and simple concept. I really liked it! Check it in

Watch a video that explains how it works:

Life saver, hum?

Estou no sapo codebits. O evento está muito bem organizado e as palestras estão a ser muito interessantes!

Como fazer uma bebida semelhante à coca-cola e à pepsi? Aqui têm a receita:

Agora tenho, a partir de hoje, 3.3GB. De um dia para o outro foi um aumento de 0.4 GB! Será que vão dar mais do que a hotmail (5GB?)