sexta-feira, 14 de dezembro de 2012

Provas e exercícios resolvidos de IS

Material IS on SkyDrive

Algum problema ao fazer download por favor comentem.

segunda-feira, 20 de agosto de 2012

Install Packet Tracer on Linux

I have already installed Cisco Packet Tracer® on Linux Mint 12 Lisa but it should work on the newest version of Mint and Ubuntu.
Do the following:

  1. After login, click in the red box image

  2. Next search for "Cisco Packet Tracer program downloads" and click on it

  3. Click on the right of "Packet Tracer v5.3.3 Application + Tutorial - Generic Ubuntu" that will download the archive "PacketTracer533_Generic_Ubuntu.tar.gz"

  4. Finished the download, open the terminal, navigate to the archive location and type:
  5. tar -zxvf PacketTracer533_Generic_Ubuntu.tar.gz
    cd PacketTracer53/
    chmod +x install

  6. Now we must have root privileges in terminal to start the installer:
  7. sudo su <will ask for your admin password>

  8. Follow the installer instructions and after the installation run Packet Tracer with the command:
  9. packettracer

quarta-feira, 20 de junho de 2012

How to getting work USB devices in VirtualBox in Linux

If you got the message "No USB Devices Connected" in your vbox, do the following:

  1. Check if you really have installed the PUEL (Personal Use and Evaluation License) last version of VirtualBox from the official website in your system and not the OSE (Open Source Edition) VirtualBox version from your distro's repository (VitualBox OSE is out-of-date).
  2. Open the terminal and type:
  3. sudo adduser <your_user_name> vboxusers
  4. Reboot and try again

quinta-feira, 19 de abril de 2012

Free Nokia Webinar session about developing S40 mobile applications

From Nokia Developer (source)
User-centric design of Series 40 applications
Putting the user at the heart of your app designs is the key to creating winning apps. This webinar will walk you through a design example focusing on helping a user determine where they are, to facilitate the use of a location based application for Series 40 Touch and Type phones. 

After giving an overview of the available methods for determining the user’s location, the webinar will discuss some of the fundamental drivers behind mobile apps design, such as user mind set, use context, and small screen limitations.

Armed with this knowledge, the webinar will explore practical design implementations to enable the user to estimate their location, with a focus on the ways in which you can translate technology into an easy-to-use application.

The presentation concludes with an overview of the Series 40 UI design tools and services offered by Nokia to help you deliver winning app design.

Overall, this session guides you on how to make complex technology accessible to Series 40 users.

Build a Series 40 web app in one hour 
Series 40 web apps are easy to build, and they make great information and entertainment apps that use frequently-updated content from the Internet. Using web development skills and tools, templates and information available from Nokia Developer, you can create an app in as little as one hour, start to finish. In this webinar, Michael from Futurice will show you how.

Michael suggests that you download and install Nokia Web Tools 1.5 before the webinar to get the most out of the session. That's the toolset he will be using in the presentation. You don't need to have it installed to learn a lot, but you'll learn more if you have it handy.

* Some attendees will become eligible for a free Nokia Asha 303 by publishing a Series 40 web app. We'll provide all the details during the session.

terça-feira, 17 de abril de 2012

Ripar um Livro: O Grande Livro dos Lavores

Existem varias formas de ripar um livro, tudo depende dos meios que dispomos para fazer a captura das páginas. No meu caso tive de recorrer ao método caseiro, ou seja, digitalizar folha a folha todas as páginas do livro e acreditem é um trabalho demoroso que requer extrema paciência.
Abaixo estão os dados do livro ripado:

Titulo: O Grande Livro dos Lavores
Editora: Selecções Reader's Digest
Ano: 1985
1.ª Edição
Nº de Páginas: 504 (aprox. 3 dias a ripar)
Idioma: Português - Portugal


Depois de fazer download de todas as partes do arquivo:

  • Executar o ficheiro O_Grande_Livro_dos_Lavores_PT.djvu.00001 para extrair o livro
  • Instalar o programa WinDjView-1.0.3-Setup na pasta Djvu Reader para abrir ebooks .djvu
  • Abrir o ficheiro  O_Grande_Livro_dos_Lavores_PT.djvu
Nota: É possível fazer a procura e cópia de texto do ebook mas como texto foi obtido a partir de mecanismos de OCR, não é assegurado a coerência do texto extraido.

Ficha Técnica:
O livro foi digitalizado com uma impressora multifunções EPSON Stylus DX3800 através do software EPSON Scan (não tem grande qualidade).
De seguida, as imagens foram importadas para o programa gscan2pdf para serem processadas pelo mecanismo de OCR Ocropus (PT) e convertidas para o formato DjVU (melhor formato que PDF).

PS: Quem souber de melhores formas de ripar um livro, sinta-se livre para comentar.

sexta-feira, 13 de abril de 2012

Useful Linux Commands to get System Info Details

  • Prints information about system hostname and kernel version installed:
  • uname -a
  • Prints information related with the X Window System:
  • X -version
  • List the installed library for S3TC compression (more info here):
  • glxinfo | grep -i s3tc
  • Indicates the path of a particular configuration file:
  • whereis xorg.conf or locate xorg.conf
  • Indicates the path of the binary:
  • which java
  • Check what Linux Desktop Environment is running (thanks to this source):
  • Executing a program in the terminal and close the terminal without killing the running program:
  • nohup gedit
  • Enable core dump generation on Linux (more info here):
  • ulimit -c unlimited

domingo, 25 de março de 2012

Black Screen when Installing Linux on Acer? Here's a workaround to enable the display backlight!

Boot your Linux live CD/DVD
  1. In the boot screen of Linux live CD/DVD press Tab and add 
  2. i915.broken=1
  3. Press Enter
After the installation on the hard drive the computer should reboot now
  1. In the boot screen of Linux live CD/DVD press Tab and add 
  2. GRUB_CMDLINE_LINUX="acpi_osi=Linux"
  3. Press Enter
  4. When the system loads try press the key shortcut to adjust the screen backlight, in my case <Fn> + <Left/Right Arrow> 
  5. Open the terminal a type sudo gedit /etc/rc.local and add
    setpci -s 00:02.0 F4.B=00;

sexta-feira, 24 de fevereiro de 2012

Useful Keyboard Hotkeys for Linux

Alt + F2 ➜ Graphical Run Application
Ctrl + Alt + L ➜ Lock Screen (Works in almost all distros)
Ctrl + Alt + F1 ➜ Switch to the first text terminals.
Ctrl + Alt + F7 ➜ Switch to the first GUI terminal (if X-windows is running on the 7th terminal, where it typcially is).


segunda-feira, 20 de fevereiro de 2012

segunda-feira, 9 de janeiro de 2012

How execute the Prey configuration panel in Linux?

Type in terminal:
gksu /usr/share/prey/platform/linux/

And type your admin/root password.
After you configure Prey properly check if the daemon is running

sudo /usr/share/prey/ --check

quinta-feira, 5 de janeiro de 2012

Change Linux Mint hostname properly

Open the terminal and to install the NetworkAdmin type:
sudo apt-get install gnome-network-admin

Next type:
gksu network-admin

You can now change the hostname properly!