Nosotros, como comunidad Debian Chile, tenemos el agrado de invitarlos el dia Jueves 14 de Agosto en la ciudad de Valparaiso a nuestra celebracion del "cumplea~os" de nuestro querido Debian.

Tenemos expositores confirmados hasta el momento, estos son: Franco Catrin, Boris Quiroz, Rodrigo Fuentealba, Bruno Barrera, Fernando San Martin, Leonardo Olmos.

Mas informacion:

http://www.debianchile.cl

http://debianday.debianchile.cl

http://debian.org

http://wiki.debian.org/DebianDay2008

Este es un truquito bastante sencillo para utilizar en la consola si estamos dentro de bash. No es nuevo pero tampoco es el más conocido.
Estando en una terminal presionamos Ctrl+R y el prompt cambiará a lo siguiente:

(reverse-i-search)`':

A partir de este momento, tipeamos un par de letras e irán apareciendo todos los comandos de nuestro historial que se le parezcan. Cuando nos traiga el que buscábamos, le damos enter y listo.

Si queremos salir sin ejecutar nada, seguimos la ruta convencional del Ctrl+C.

Fuente: Be Linux My Friend

Debian GNU/Linux 5.0 se espera, tentativamente, para el próximo mes de Septiembre.

Fuente: VivaLinux

Mensaje en la lista de desarrolladores: aquí.

A modo de curiosidad, les dejo un historial del lanzamiento de las versiones:

Debian 0.01 a 0.90 (agosto-diciembre de 1993)
Debian 0.91 (enero de 1994)
Debian 0.93R5 (marzo de 1995)
Debian 0.93R6 (noviembre de 1995)
La versión 1.0 nunca fue publicada.
Debian 1.1 Buzz (17 de junio de 1996)
Debian 1.2 Rex (12 de diciembre de 1996)
Debian 1.3 Bo (2 de junio de 1997)
Debian 2.0 Hamm (24 de julio de 1998)
Debian 2.1 Slink (9 de marzo de 1999)
Debian 2.2 Potato (15 de agosto del 2000)
Debian 3.0 Woody (19 de julio del 2002)
Debian 3.1 Sarge (6 de junio de 2005)
Debian 4.0 Etch (8 de abril de 2007)
Debian 5.0 Lenny (Septiembre 2008)

¿ Por qué Debian ?

Salu2

Pues bien manos a la obra y obra a las mano lo instalé en una PC que tenía Windows XP utilizando la súper cómoda y excelente herramienta Wubi que trae la propia distribución y después de 30 minutos aproximadamente ya tenía instalado Xubuntu en el ordenador. Dicho ordenador posee 2.6 GHz de CPU y 256 MB RAM. Xubuntu pide para instalarse los siguientes requisitos:

(LiveCD + Install CD), 128 MB RAM para correr o 192 MB RAM para instalar. CD Alternativo de Instalación 64 MB RAM. 1.5 GB libre en el Disco duro. Una vez instalado Xubuntu trabaja con 192 MB RAM, pero es recomendable tener 256 MB RAM para tener un sistema más potente.

La primera impresión que tuve cuando se mostró el escritorio es que estaba viendo a Gnome ante mis ojos. Si usted duda de lo que digo solo mire estos screenshots y verá. Algo que me pareció genial ya que Gnome es el entorno de escritorio que normalmente uso. El sistema como tal estaba cargado y listo en menos de un minuto y el funcionamiento de la PC era óptimo ( poco consumo de recursos ).

El navegador de archivos Thunar es muy rápido y fácil de usar. Como todas las distribuciones de Linux, Xubuntu es altamente personalizable. Xubuntu es una de esas distribuciones que tiene todo lo que necesitas en su lugar, el menú organizado por categorías y un panel de control que tiene todas las funcionalidades que necesitas para trabajar con el sistema operativo ( Apariencia, Teclado, Salvapantallas..etc ).

Además, contamos por defecto con aplicaciones comunes en otras distribuciones ( Firefox, Gimp, Thunderbird, Abiword... etc )

En lo que a mi respecta me ha gustado mucho, incluso estoy pensando en dejar atrás a mi viejo Gnome en Debian y pasarme a Xubuntu, y dado que Ubuntu es basado en Debian, los cambios no se notan... En conclusión, si usted lo que quiere es un sistema operativo rápido, estable y con un entorno agradable y que lleve justamente lo necesario, Xubuntu es una muy buena opción.

So while we gear up for Saturday's out-of-the-starting-blocks finale, I thought I would catch up on things I haven't caught up on (yet), and to give you a couple of random thoughts about how things are going and where they are heading.

Incidentally, I said both "out of the starting blocks" and "finale" above for a reason: As far as the events for Lindependence in Felton go, Saturday's event might be Lindependence's last event before the formation of a LUG and an on-the-ground GNU/Linux presence in the area, but the spirit of Lindependence and movement itself are currently snowballing into something that will be felt in these parts, and happening at a rate faster than I had expected.

First things first: A lot of people made this happen so far, and are making it happen as we go forward. Someday soon I'll get to all of them. Locally in Felton, Bob Lewis and John Detke have been invaluable with their guidance, having lived here a lot longer than I have. David Eisenberg and Jim Griffin, college professors at different schools, also lent a huge hand. Daniel Gimpelevich, Sean Kellog, Grant Bowman, Rolf Pedersen, Jeremy Sturdivant and Kai Tamkun all represented their distros of choice, and then some. Same for Steve Rufle, who came up from Phoenix for this, GPLed stuffed penguins in tow. Frank Turner made name tags, posters and signage which are so nice, I finally have something to put on the walls here in the office when we're not using them in Lindependence events. Christian Einfeldt not only took miles of videotaped footage, but also helped on in an install or two.

Gurus and greybeards, all. And if I haven't mentioned you, I will. I promise.

Fedora, Mandriva, Ubuntu, Debian -- those are the big distros on hand here, and we'd like to add more. A special mention to two outstanding distros that couldn't be here, but support us as well: Wolvix, straight out of Norway, is a Slackware based distro, and lead developer Wolven is a new Dad (congratulations) and offered his support for Lindependence 2008 when first asked; the other distro, AntiX, is a great distro based on Mepis for older machines, and like Wolven, lead developer anticapitalista also gave us a nod early on. Both these guys couldn't be here, and both do not (yet) have communities large enough for someone to come up and participate. But as the project goes to other areas, there will be other chances.

Developers stepped up as well. I haven't said enough about Codeweavers during the course of their support, and I am grateful they are around. Codeweavers allowed us to provide those who convert to Linux to be able to use their software so the newbies can use their Windows software on Linux. OpenOffice.org also gets special mention, not only because they are a more-than-viable option to Microsoft Office (even on other platforms), but they gave the project a significant boost in their community. On several occasions, I got calls from people who said, "I saw Lindependence on an OpenOffice forum . . . ." Tod Landis of dbEntrance, from just up the road in Boulder Creek, was on hand with his outstanding MySQL browser. On the hardware side, Zareason always deserves special mention for providing such great machines that are Microsoft-free, and even newcomer Sustain Computing gets a nod for supporting our efforts*-.

As for Lindependence, we're moving northward. I got a call this morning from someone (other than Tod) who wants to organize the same kind of events in Boulder Creek, a small town about 6 miles north of here on Highway 9; the last town between here and the summit (and over the summit in question lies the valley -- the Silicon Valley). Not only this, as I mentioned in an earlier blog, we may be on the road to Portland shortly, bringing Lindependence to a town near that Oregon city.

So far, I have come away with several interesting realizations, the more important of which are these: That people are more ready and willing to distance themselves from Microsoft than I had originally anticipated, and translating that into getting them to use Free/Open Source Software will have a huge effect on the digital landscape in this area and elsewhere -- and let me emphasize the elsewhere because if it can happen here, it can happen elsewhere.

So who's ready to make history in their community?

Oh, and if you have Microsoft stock, I'd sell. Fast.

[Okay, so maybe I threw in a cheap shot after all.]

77 and gloriously sunny.

Sia per Debian/Ubuntu che per Arch Linux il pannello non è disponibile in versione "precompilata" ma necessita di installazione "manuale". Non dovete temere però la procedura porta via al massimo 5 minuti, ecco come fare:

Per utenti Debian/Ubuntu Installate le dipendenze necessarie per la compilazione da terminale: apt-get install libcairo2-dev libpango1.0-dev libglib2.0-dev libimlib2-dev

Per utenti Arch Linux Installate le dipendenze necessarie per la compilazione da terminale: pacman -S cairo pango glib2 imlib2

Il resto è uguale sia per utenti Debian/Ubuntu che Arch Linux

1. Scaricate i sorgenti tar.gz dal sito ufficiale: http://code.google.com/p/tint2/downloads/list
2. Sempre da terminale scompattate i sorgenti scaricati: tar xzfv tint*
3. Portatevi nella cartella /src dei sorgenti scompattati: cd /tint-etc../src
4. Digitate: make
5. Digitate da root: make install

Se tutto è filato liscio potete lanciare la vostra barra digitando da terminale: tint Naturalmente il comando tint va inserito all'avvio di Openbox (nel file autostart.sh) o del vostro Desktop Environment. Per i colori, gli angoli, e le trasparenze è altamente configurabile. Basta editare con un editor di testo il file presente in /home/nomeutente/.config/tint/tintrc

Altri difetti? Sia per Debian/Ubuntu che per Arch Linux il pannello non è disponibile in versione "precompilata" ma necessita di installazione "manuale". Non dovete temere però la procedura porta via al massimo 5 minuti, vediamo come fare:

Per utenti Debian/Ubuntu
Installate le dipendenze necessarie per la compilazione da terminale: apt-get install libcairo2-dev libpango1.0-dev libglib2.0-dev libimlib2-dev

Per utenti Arch Linux
Installate le dipendenze necessarie per la compilazione da terminale: pacman -S cairo pango glib2 imlib2

Il resto è uguale sia per utenti Debian/Ubuntu che Arch Linux

1. Scaricate i sorgenti tar.gz dal sito ufficiale: http://code.google.com/p/tint2/downloads/list
2. Sempre da terminale scompattate i sorgenti scaricati: tar xzfv tint*
3. Portatevi nella cartella /src dei sorgenti scompattati: cd /tint-etc../src
4. Digitate: make
5. Digitate da root: make install

Se tutto è filato liscio potete lanciare la vostra barra digitando da terminale: tint
Naturalmente il comando tint va inserito all'avvio di Openbox (nel file autostart.sh) o del vostro Desktop Environment.

Per i colori, gli angoli, e le trasparenze è altamente configurabile. Basta editare con un editor di testo il file presente in /home/nomeutente/.config/tint/tintrc

Well, I've had enough of the iPhone to last me the rest of my life, so here comes some UNIX related angst!

FreeBSD has been around longer than Linux, and is a derivative of the UNIX operating system; it is NOT a Linux distribution. FreeNAS is an operating system based on FreeBSD that is supposed to be used for creating an NAS (Network Attached Storage) system. There’s a funny thing about how things rarely do what they are supposed to, as I discovered.

Now, I know that in the freeware world of community OS distribution efforts, not everything will be as polished or organized as say, a Windows project or release (don't bother with the sarcastic "Polished? Ha!"). What gets me though is that FreeNAS is up to version 0.68 and 0.69beta and they have still yet to discover just how buggy this software is. I know it's free, but it's based off of something that works already, so why did I have the worst experience ever trying to install it?

I began by downloading the latest LiveCD version (at the time, 3 nights ago), "FreeNAS-i386-liveCD-0.686.4.3374" and burned it onto a nice fresh Lightscribe disc. Knowing that this could be a potentially bad experience (I've had too many so now I'm cautious) I shutdown, unplugged my MBR hard drive and media drive and left in a blank drive and plugged in a 4GB USB flash drive. I wanted to test the set up before committing to a $370 parts purchase to build my actual NAS, and I'm so glad I did.

Here's what I wanted to do:

- Boot off of the USB flash drive (use to store OS and config files)
- Use SATA HDD for data storage
- Have it work

Here's what happened:

- Failed to boot from CD
- No chance to use SATA HDD for data storage
- GFL

So I booted from the CD and lo-and-behold the bloody thing infinite looped on me. Something about Trap 9 and how much it hates its life. I read the output before it vanished and I caught "i386". I knew I used an AMD processor so I knew this would be a problem. I went back to the FreeNAS website and found out there was an AMD beta version "FreeNAS-amd64-liveCD-0.69b1.3504". Apparently FreeBSD favours Intel (sadly) so this beta version is the first. I burned a new CD (having wasted the other one) and booted from CD again. It worked -- Sort of.

So this time it booted into the install menu and I selected install to USB/Flash/HDD. Invalid something or other. Wonderful, I thought. I rebooted and tried again, and for some reason it decided that the USB drive was fine and dandy that time. I rebooted and set my BIOS to boot from USB HDD.

INVALID SLICE. OMFGWTFBBQ?! OMFG CANNOT FIND KERNEL!1!11!1!! BLARGGGGG!111!!

I proceeded to clear my USB key and try again. Fast forward to after my obvious findings. I succeeded in installing the OS to the blank hard disk while leaving a separate partition for data storage. I rebooted from the HDD and figured I was finally on my way to getting everything configured.

Why do I always assume these things?

The first thing you need to do is tell the OS where it's getting it's Ethernet from (my NIC is an on-board nVidia chip). In FreeBSD they use stupid naming systems like da0, cd1, xfs3 and other lame, confusing things. The set-up tutorial told me that I could use an auto-detect feature or type it in manually. Auto-detect + anything usually ends up wrong so I opted to type it in. When I got to the prompt there was no option to type anything, just auto-detect. I used it and it said there was "no link-up detected". I rebooted and retried 6 times to no avail. This is what help forum are for, right?

I read about 70+ posts about this problem and the answer was always the same "it works for me, sucks it doesn't work for you" or "check the hardware compatibility list". I checked the list and it's totally incomplete. What I did gather though, is that if you're using a motherboard with onboard LAN that was made after the cold war, it's not supported in the FreeBSD (and hence, the FreeNAS) driver library. Checking the list of compatible NIC/Chipset versions, it seems that the newest nVidia model is the nForce 4 series, which makes me a sadpanda. We're up to 790i and FreeBSD only has drivers for something which ended its production life in early 2005. I know, its freeware, but I mean, really? So I went looking for an nForce 4 motherboard and I obviously didn't find any.

My only option is to buy a compatible NIC PCI card (which also needs to be manufactured before 2005 to ensure driver compatibility) and disable the onboard NIC which is faster, better, and integrated which saves room and promotes air-flow in the case. Sadly, because of how good onboard NICs are these days (any made after 2005 are likely Gigabit 10/100/1000), there aren't many manufacturers making PCI cards anymore. You're stuck with a few low quality and a couple high quality (dual Gigabit) high priced options which still won't be supported by the FreeNAS device driver library.

Solution? Use OLD, OLD, OLD, OLD, OLD, OLD parts to make a NAS. Problem? Lack of SATA support, no integrated video (will need a video card, $$$), lack of RAID drivers, lack of features such as Boot from USB (can't be upgraded from BIOS flashing consistently), lack of CPU sockets that accept anything BUT an Intel i386 from 1990, and lack of DDR2 RAM slots (try finding DDR RAM at a good price in 2GB kits).

At the end of all of this, I have decided that my server will either run Debian, Fedora 9, or sadly, Windows Vista stripped down to the bone using vLite (which could end up being a winner). I really wanted to use free software dedicated to creating an NAS, but using modern parts is next to impossible. It seems as though you need to pay for Windows Vista ($199 for Ultimate), Windows XP Pro ($169) or use a Linux distribution (I am not experienced with any at all) to create anything of value.

All I wanted was a FreeNAS and all I got was a pain in my ass.

-Cam

Najpierw przygotowujemy miejsce do zabawy:

mkdir /xen

cd /xen

wget http://bits.xensource.com/oss-xen/release/3.2.1/xen-3.2.1.tar.gz

tar -xvvzf xen-3.2.1.tar.gz

Następnie przygotowujemy zestaw narzędzi potrzeby działania:

aptitude install gcc make binutils zlib1g-dev python-dev libncurses-dev openssl-dev libx11-dev bridge-utils iproute python-setuptools gawk libssl-dev libncurses5-dev pciutils-dev gettext

easy_install -U mercurial

Teraz przechodzimy katalog wyżej i pobieramy jeszcze odpowiedniego kernela:

cd ..

hg clone http://xenbits.xensource.com/linux-2.6.18-xen.hg

No i końcowa zabawa (za -jX podstawić ilość rdzeni + 1, czyli w przypadku ośmiu rdzeni wstawiam -j9):

cd xen-3.2.1

make -jX world

make install

No i to by było na tyle. Nie było to może zbyt odkrywcze, ale może komuś się przyda ;)

Por eso en esta oportunidad mostrare un ejemplo de seleciones de imagenes dentro de un JDesktopPane,

La idea general es impleementar 3 clases(WindowImagenes, ControlaEventos, PintaImagen). La primera clase(WindowImagenes.java) es la interactua con el usuario, mejro dicho la ventana. La segunda clase(ControlaEventos.java), como su mismo nombre, es la encargada de controlar las acciones ocurridas en la ventana. La tercera clase(PintaImagen.java), es la clase que me permite pintar la imagen en algun como componente java (en este caso jDesktopPane).

La primera clase(WindowImagenes), creamos objetos del tipo "File" y le damos la ruta de nuestra imagen.

public File imagen1 = new File ("Images/java.png");

Aqui el fuente de WindowImagenes.java

import javax.swing.*;
import java.io.File;
public class WindowImagenes extends JFrame {

    public WindowImagenes() {
        initComponents();
    }

    private void initComponents() {

        buttonGroup1 = new ButtonGroup();
        jPanel1 = new JPanel();
        jRadioButton1 = new JRadioButton();
        jRadioButton2 = new JRadioButton();
        jRadioButton3 = new JRadioButton();
        jPanel2 = new JPanel();
        jDesktopPane1 = new JDesktopPane();
        jLabel1 = new JLabel();

        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        setTitle("http://inforux.wordpress.com");
        getContentPane().setLayout(null);

        jPanel1.setBorder(BorderFactory.createTitledBorder("Selecione la Imagen"));
        jPanel1.setLayout(null);

        jRadioButton1.setText("Imagen 1");
        jPanel1.add(jRadioButton1);
        jRadioButton1.setBounds(30, 20, 83, 23);

        jRadioButton2.setText("Imagen 2");
        jPanel1.add(jRadioButton2);
        jRadioButton2.setBounds(170, 20, 83, 23);

        jRadioButton3.setText("Imagen 3");
        jPanel1.add(jRadioButton3);
        jRadioButton3.setBounds(290, 20, 114, 23);

        /*agregamos al ButtonGroup los JRadioButtons*/
        buttonGroup1.add(jRadioButton1);
        buttonGroup1.add(jRadioButton2);
        buttonGroup1.add(jRadioButton3);
        getContentPane().add(jPanel1);
        jPanel1.setBounds(20, 50, 440, 60);

        jPanel2.setBorder(BorderFactory.createTitledBorder("Imagen en el JDesktopPane"));
        jPanel2.setLayout(null);
        jPanel2.add(jDesktopPane1);
        jDesktopPane1.setBounds(20, 30, 390, 270);

        getContentPane().add(jPanel2);
        jPanel2.setBounds(20, 120, 440, 330);

        jLabel1.setText("DEMO POR INFORUX");
        getContentPane().add(jLabel1);
        jLabel1.setBounds(170, 20, 170, 20);

        java.awt.Dimension screenSize = java.awt.Toolkit.getDefaultToolkit().getScreenSize();
        setBounds((screenSize.width-488)/2, (screenSize.height-493)/2, 488, 493);
        ControlaEventos controlaEventos =new ControlaEventos(this);
        jRadioButton1.addActionListener(controlaEventos);
        jRadioButton2.addActionListener(controlaEventos);
        jRadioButton3.addActionListener(controlaEventos);
    }

    public static void main(String args[]) {
                new WindowImagenes().setVisible(true);  }

    public File imagen1 = new File ("Images/java.png");
    public File imagen2 = new File ("Images/JavaAnimado.gif");
    public File imagen3 = new File ("Images/JavaLoro.jpg");
    public JRadioButton jRadioButton1;
    public JRadioButton jRadioButton2;
    public JRadioButton jRadioButton3;
    private ButtonGroup buttonGroup1;
    public JDesktopPane jDesktopPane1;
    private JLabel jLabel1;
    private JPanel jPanel1;
    private JPanel jPanel2;
}

La segunda clase,recibe un objeto de la clase q controlara(en este caso WindowImagenes), ademas manejara todos los eventos realizados en la ventana. Por otro lado implementara el metodo "cargarImagen()", el cual recibe, un JDesktopPane, y el archivo Imagen, luego atravez de la clase ImageIO, podremos leer el archivo, como archivo imagen. para luego agregarlo al jDesktopPane con el metodo "setBorder()"

BufferedImage image = ImageIO.read(fileImagen);
jDeskp.setBorder(new PintaImagen(image));

Aqui el fuente de ControlaEventos.java

import java.awt.event.*;
import java.io.File;
import java.awt.image.BufferedImage;
import javax.imageio.ImageIO;
public class ControlaEventos implements ActionListener{/*clase escuchadora de nuestra vista*/
    WindowImagenes ventana;/*declaramos un objeto de la clase WindowImagenes*/
    public ControlaEventos(WindowImagenes objeto){
        ventana = objeto;
    }
    public void actionPerformed(ActionEvent evento)
    {
        if (evento.getSource()== ventana.jRadioButton1)
            cargarImagen(ventana.jDesktopPane1,ventana.imagen1);
        else {
        if (evento.getSource()== ventana.jRadioButton2)
            cargarImagen(ventana.jDesktopPane1,ventana.imagen2);
        else {
        if (evento.getSource()== ventana.jRadioButton3)
            cargarImagen(ventana.jDesktopPane1,ventana.imagen3);
        }
        }
    }
    /*este metodo recibe el jdeskopPane y el archivo imagen*/
    public  void cargarImagen(javax.swing.JDesktopPane jDeskp,File fileImagen)
    {
        try{
            BufferedImage image = ImageIO.read(fileImagen);
              jDeskp.setBorder(new PintaImagen(image)); }
        catch (Exception e){   System.out.println("No cargo imagen, sorry");   }
    }
}

La ultima clase(PintaImagen.java), es la permite preparar la imagen para ser agregados a un componente en este caso del tipo JDesktopPane, esta debera implementar de la Clase Border, obligandonos a llamar a 3 metodos "paintBorder()", "getBorderInsets()" y "isBorderOpaque()".

Aqui el fuente:

import java.awt.Component;
import java.awt.Graphics;
import java.awt.Insets;
import java.awt.image.BufferedImage;
import javax.swing.border.Border;

public class PintaImagen implements Border{

    private   BufferedImage image ;

    public PintaImagen(BufferedImage image ) {
        this.image=image;}

    public void paintBorder(Component c, Graphics g, int x, int y, int width, int height) {
    int x0 = x+ (width-image.getWidth())/2;
    int y0 = y+ (height-image.getHeight())/2;
    g.drawImage(image,x0,y0,null); }

    public Insets getBorderInsets(Component c) {
    return new Insets(0,0,0,0);}

    public boolean isBorderOpaque() {
    return true; }
}

Luego, compilamos, sin antes asegurarnos de haber dado la ruta correcta del directotio de carptas para los obejros "File" en la clase WindowImagenes

$jjavac WindowImagenes.java

Listo, aqui los pantallazos:

Espero les sirva a mas de uno.

Saludos

PD: alejandro.

"Rapache is a python + GTK tool that uses the SSH protocol to manage and configure apache2 and all of its modules."

É uma ferramenta escrita em Python e GTK que usa o protocolo ssh para configurar e gerir o apache2 e os seus módulos. Gestão remota de servidores não posso comentar mas que funciona bem localmente isso funciona.

sources.list

deb http://ppa.launchpad.net/rapache-devel/ubuntu hardy main
deb-src http://ppa.launchpad.net/rapache-devel/ubuntu hardy main

sudo aptitude update

sudo aptitude install rapache

Pacote: rapache
Maintainer: Emanuele Gentili
Tamanho Descomprimido: 246k
Dependente de: python (>= 2.5), python (< 2.6), python-central (>= 0.6.5)
Descrição: Rapache is a simple tool for managing and configuring an apache2 instance without having to hassle around through configuration files.

Página Inicial: http://www.rapache.org

Rapache in launchpad

Daqui a um tempo não são necessários sysadmin...

Which OS are You?

En esta oportunidad, para aprender a usar estos 2 componentes, tenemos un ejemplo:

"El ejemplo trata sobre la compra de un ordenador (Portatil o de Escritorio), luego, tendremos la opcion de agregarle algunos accesioros mas(memoria usb, y ariculares)"

La imagen mostrada es la ventana de interfaz de usuario.

En este caso, se ha implementado solamente 2 (dos) clases (Window y ControlaWindow). la primera(Window) es la UI(interfaz de usuario), en otras palabras la ventana dibujando los conponentes(jTextfile, jLabel,jCheckBox, etc), la segunda clase(ControlaWidow), es la encarga de gestionar todos los eventos de la primera, ademas de ejecutar algunas acciones(como sumar y restar)

Ahora Entramos a implementar la primera clase(Window.java), un detalles es que para crear los JRadiobutton, es necesario crear, un ButtonGroup que es un componente que agrupa varios JRadiobutton con la finalidad de que todos los JRadiobutton incluidos en el ButtonGroup esten enlazados, de tal forma q solo uno a la vez se puede seleccionar.

ButtonGroup grupoDeBotones = new ButtonGroup();
JRadioButton jrb1 = new JRadioButton();
JRadioButton jrb2 = new JRadioButton();
grupoDeBotones.add(jrb1);
grupoDeBotones.add(jrb2);

Por otro lado en la clase Window, hay q crear un objeto de la clase de controlara todos sus eventis, en este caso de ControlaWindow.

ControlaWindow controlawindow = new ControlaWindow();

Aqui en fuente de Window.java:

import javax.swing.*;
public class Window extends JFrame {
    /*Demo por inforux*/
    public Window() {
        initComponents();
    }
    public void initComponents() {

        grupoDeBotones = new ButtonGroup();
        jPanel1 = new JPanel();
        jrbCP = new JRadioButton();
        jrbCE = new JRadioButton();
        jPanel2 = new JPanel();
        jchkUsb = new JCheckBox();
        jchkAur = new JCheckBox();
        jPanel4 = new JPanel();
        jLabel2 = new JLabel();
        jtfTotal = new JTextField();
        jLabel3 = new JLabel();

        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        setTitle("http://inforux.wordpress.com");
        setResizable(false);
        getContentPane().setLayout(null);

        jPanel1.setBorder(BorderFactory.createTitledBorder("Seleccione Equipo"));
        jPanel1.setLayout(null);

        jrbCP.setText("Comp. Portatil   ( $ 1000 )");
        jPanel1.add(jrbCP);
        jrbCP.setBounds(10, 23, 200, 30);

        jrbCE.setText("Comp. de Escritorio ( $ 800 )");
        jPanel1.add(jrbCE);
        jrbCE.setBounds(210, 23, 220, 30);

        getContentPane().add(jPanel1);
        jPanel1.setBounds(35, 40, 440, 70);

        jPanel2.setBorder(BorderFactory.createTitledBorder("Agregados Opcionales"));
        jPanel2.setLayout(null);

        jchkUsb.setText("Usb 2 gb        ( $.20 )");
        jPanel2.add(jchkUsb);
        jchkUsb.setBounds(10, 20, 160, 23);

        jchkAur.setText("Auriculares    ( $.30 )");
        jPanel2.add(jchkAur);
        jchkAur.setBounds(10, 50, 170, 23);

        getContentPane().add(jPanel2);
        jPanel2.setBounds(30, 120, 190, 90);

        jPanel4.setBorder(BorderFactory.createTitledBorder("Precio Total"));
        jPanel4.setLayout(null);

        jLabel2.setText("$.");
        jPanel4.add(jLabel2);
        jLabel2.setBounds(30, 20, 20, 20);
        jPanel4.add(jtfTotal);
        jtfTotal.setBounds(60, 20, 100, 20);

        getContentPane().add(jPanel4);
        jPanel4.setBounds(250, 130, 190, 60);

        jLabel3.setText("DEMO POR INFORUX");
        getContentPane().add(jLabel3);
        jLabel3.setBounds(180, 10, 150, 30);

        /*agregamos los JRadioButton al ButtonGroup*/
        grupoDeBotones.add(jrbCE);
        grupoDeBotones.add(jrbCP);

        java.awt.Dimension screenSize = java.awt.Toolkit.getDefaultToolkit().getScreenSize();
        setBounds((screenSize.width-501)/2, (screenSize.height-252)/2, 501, 252);
        /*Creamos un objeto controlador de esta clase*/
        ControlaWindow controlaWindow = new ControlaWindow(this);
        /* y luego los agregamos al objeto creado*/
        jchkAur.addActionListener(controlaWindow);
        jchkUsb.addActionListener(controlaWindow);
        jrbCE.addActionListener(controlaWindow);
        jrbCP.addActionListener(controlaWindow);
    }
    public static void main(String args[]) {
                new Window().setVisible(true);}

    // declaramos  las variables de los componentes
    public ButtonGroup grupoDeBotones;
    public JLabel jLabel2;
    public JLabel jLabel3;
    public JPanel jPanel1;
    public JPanel jPanel2;
    public JPanel jPanel4;
    public JCheckBox jchkAur;
    public JCheckBox jchkUsb;
    public JRadioButton jrbCE;
    public JRadioButton jrbCP;
    public JTextField jtfTotal;
}

La segunda clase, solo se dedicara a manejar los eventos de la ventana, ademas de realizar algunas operacines del ejecicio.

Aqui el fuente:

import java.awt.event.*;
public class ControlaWindow implements ActionListener{/*clase escuchadora de nuestra vista*/
    Window ventana;/*declaramos un objeto del tipo window*/
    int aur=30,usb=20,cp,ce,total=0;/*declaramos e instanciamos nuestras variables*/
    public ControlaWindow(Window objeto){
        ventana = objeto;
    }
    public void actionPerformed(ActionEvent evento) 

    {

        if (evento.getSource()== ventana.jchkAur){/*escuchamos el evento en auriculares*/
            if (ventana.jchkAur.isSelected()){/*nos aseguramos q esta chekeado*/           
                total=total+aur;
                ventana.jtfTotal.setText(Integer.toString(total));}   
            else {/*si no esta chekeado*/
                    total=total-aur;
                    ventana.jtfTotal.setText(Integer.toString(total));}    }
        else {
        if (evento.getSource()== ventana.jchkUsb){/*escuchamos el evento en usb*/
            if (ventana.jchkUsb.isSelected()){/*nos aseguramos q esta chekeado*/           
                total=total+usb;
                ventana.jtfTotal.setText(Integer.toString(total));}   
            else {/*si no esta chekeado*/
                    total=total-usb;
                    ventana.jtfTotal.setText(Integer.toString(total));}    }   
        else {
        if (evento.getSource()== ventana.jrbCE){/*escuchamos el evento en comp. escritorio*/
                total=total-cp; ce=800;
                total=total+ce;           
                ventana.jtfTotal.setText(Integer.toString(total));}       
        else {
        if (evento.getSource()== ventana.jrbCP){/*escuchamos el evento en comp. portatil*/   
                total=total-ce; cp=1000;               
                total=total+cp;           
                ventana.jtfTotal.setText(Integer.toString(total));}                   
        }}    }
    }
}

Luego, tendremos q compilar la clase Window.java

$javac Window.java

Listo podremos ver el ejemplo en ejecuccion, aquialgunos pantallazos para q ilustren el ejemplo

Espero les sirva de ayuda.

Saludos

Windows Manager: Openbox

Pannello: tint2

Sistem Tray (in basso a dx): trayer

Sfondo impostato con feh

File Manager: rox-filer

Web Browser: kazehakase

Messenger: Pidgin, Gajim

Posta elettronica: Sylpheed

Grafica: Gimp, Inkscape

Multimedia: VLC (video, mp3, tv digitale terrestre)

Editor di testo: leafpad

Emulatore di terminale: xterm

Amministrazione: gtk-theme-switch, obmenu, obconf, bum

Server WEB: lighttpd con php e mysql

Desktop remoto: rdesktop

Naturalmente molte applicazioni per voi risulteranno inutili, tipo il server web che utilizzo per lavoro come anche lo stesso desktop remoto. Questo è tutto software minimale COMPLETAMENTE indipendente dai vari DE gnome e kde, quindi non sporcherà il vostro sistema di librerie inutili. Tutto il software che ho elencato lo trovate nei repository sia di debian/ubuntu che archlinux, eccetto la barra tint2 di cui vi illustrerò prossimamente la semplice installazione.

Windows Manager: Openbox

Pannello: tint2

Sistem Tray (in basso a dx): trayer

Sfondo impostato con feh

File Manager: rox-filer

Web Browser: kazehakase

Messenger: Pidgin, Gajim

Posta elettronica: Sylpheed

Grafica: Gimp, Inkscape

Multimedia: VLC (video, mp3, tv digitale terrestre)

Editor di testo: leafpad

Emulatore di terminale: xterm

Amministrazione: gtk-theme-switch, obmenu, obconf, bum

Server WEB: lighttpd con php e mysql

Desktop remoto: rdesktop

Naturalmente molte applicazioni per voi risulteranno inutili, tipo il server web che utilizzo per lavoro come anche lo stesso desktop remoto. Questo è tutto software minimale COMPLETAMENTE indipendente dai vari DE gnome e kde, quindi non sporcherà il vostro sistema di librerie inutili. Tutto il software che ho elencato lo trovate nei repository sia di debian/ubuntu che archlinux, eccetto la barra tint2 di cui vi illustrerò prossimamente la semplice installazione.

Once you got the right thing, create a folder in the mnt directory. If there is no such mnt directory then use the media directory.

To create a folder in any of these directories, you should have the root permission. For that, use the SU command, provide the root password and then create the folder.

mkdir /mnt/foldername
(or)
mkdir /media/foldername

Once you have created the folder, you would be mounting the windows ntfs partition onto this folder with the following command.

for example, let us assume it to be hda3

mount /dev/hda3 /mnt/foldername/ -t ntfs -o nls=utf8,umask=0222
(or)
mount /dev/hda3 /media/foldername/ -t ntfs -o nls=utf8,umask=0222

Now you can access your windows ntfs partition from /mnt/foldername which will be a readonly one. You cant modify the files on those windows ntfs partition.

I tried this on debian etch and worked great.

I have been messing with this linux distro, debian etch to get my wireless interface work. The latest drivers listed on the ralink site is not working or atleast i dont know how to get them work. I tried installing various versions and found this ralink RT61_Linux_STA_Drv1.1.0.0 working fine. At this time, when i was writing this article (my first article lol) i m not any linux novice but just a 6 month old bug :D, so give a try at your own risk.

Actually i found this guide for ubuntu and tried it on debian and yeah it worked great.

First confirm you were using the RT61 chipset, for that

open the terminal and give lspci

if you got the output as follows then you do proceed.

Network controller: RaLink RT2561/RT61 rev B 802.11g

Either log in as root user or use the su command and provide the root password in the terminal and then install the kernel headers and essential files to compile the modules.

apt-get install build-essential
apt-get install linux-headers-`uname -r`
apt-get install wireless-tools

Download the rt61 driver from the link below.

http://host.hackerbox.org/download.php?file=cc375eba143c70be19718247fa8c18ba

Later open the terminal and move to the location where you have saved the rt61 driver and give the following commands.

$> tar xvfz RT61_Linux_STA_Drv1.1.0.0.tar.gz
$> cd RT61_Linux_STA_Drv1.1.0.0/Module/
$> cp -f Makefile.6 Makefile
$> make all
#> cp rt61.ko /lib/modules/`uname -r`/kernel/drivers/net/
#> depmod
#> nano /etc/Wireless/RT61STA/rt61sta.dat

In that, edit the following fields shown below,

SSID=<SSID of your access point>
NetworkType=Infra
AuthMode=WPAPSK
EncrypType=TKIP
WPAPSK=<your WPA key/password>

For example, these fields should be like this,

SSID=aaaa
NetworkType=Infra
AuthMode=WPAPSK
EncrypType=TKIP
WPAPSK=password

then press ctrl+o to save the file and ctrl+x to exit.

#> modprobe --remove rt61pci
#> modprobe rt61
#> iwconfig

After giving the above command, check whether a device ra0 is loaded from the output that pops for the above command.

Proceed with the following command to check whether everything went right or not. you should get response from the router once you ping it.

#> ifconfig ra0 <Your computer IpAddress> netmask 255.255.255.0 up
#> ping <Ipaddress of Access Point/router>

For example,
#> ifconfig ra0 192.168.1.50 netmask 255.255.255.0 up
#> ping 192.168.1.1

Once you got a response from the router, give the following commands

#> echo 'rt61' >> /etc/modules
#> echo 'alias ra0 rt61' >> /etc/modprobe.d/aliases
#> nano /etc/network/interfaces

In that file, delete the preconfigured wlan0 lines, only the below things should be left

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

and then add the following lines, if you have a static ip address,

iface ra0 inet static
address <your ip address>
netmask 255.255.255.0
gateway <ip address of your access point>
auto ra0

else, if you have a dynamic ip address then configure the dhcp on the router and add the below lines into the file,

iface ra0 inet dhcp
wireless-essid YOURESSID
auto ra0

Press ctrl+o and ctrl+x to save and exit.

Reboot the computer and configure the dns ip address as follows,

Go to Applications menu and then debian-->apps-->system--> network admin.

In that window, select the dns tab, press add and give your internet service provider's dns ip address or your routers ip address, if you have configured the dns there.

i m sure, you would be connected to the internet by now.

post your comments. thanks for reading this.

Which OS are You?

I don't really take these kinda quizzes but still this one seemed more like my style and guess what, I'm Debian Linux. To be perfectly honest, I've never even used that particular flavour before or heck, I've not even used too much of Linux at all. My laziness and complacency don't let me go away from XP though I like Ubuntu (going to order a CD).. But what was surprising was the comment. None of my current friends have liked me at first sight/convo but today they find it laughable. Wow, I should seriously get hold of Debian Linux sometime.

Primero editamos el sources.list tecleamos en la Terminal de root

gedit /etc/apt/sources.list

y añadimos los repositorios para los Drivers Nvidia y guardamos

###NVIDIA

deb http://people.debian.org/~rdonald/nvidia/ unstable/i386/
deb http://people.debian.org/~rdonald/nvidia/ unstable/all/
deb http://people.debian.org/~rdonald/nvidia/ modules-unstable/i386/
deb http://people.debian.org/~rdonald/nvidia/ pre/i386/
deb http://people.debian.org/~rdonald/nvidia/ unstable/amd64/

deb http://people.debian.org/~rdonald/nvidia/ unstable nvidia-graphics-drivers
deb http://people.debian.org/~rdonald/nvidia/ unstable nvidia-kernel-common
deb http://people.debian.org/~rdonald/nvidia/ unstable nvidia-settings
deb http://people.debian.org/~rdonald/nvidia/ unstable nvidia-xconfig
deb http://people.debian.org/~rdonald/nvidia/ unstable modules

Actualizamos la lista de repositorios

apt-get update

ahora vamos a Sistema > Administracion > Gestor de paquetes Sinaptic e instalamos los siguientes paquetes

build-essential module-assistant

Ahora buscamos linux-headers, pero hay muchos ¿cual instalo? instalas el header de tu kernel actual si no sabes teclea en la terminal

uname -r

Y ese es la denominación del linux-header que vamos a instalar

Ahora en la terminal tecleamos

module-assistant auto-install nvidia

apt-get install nvidia-glx

abrimos /etc/modules

gedit /etc/modules

y escribimos al final nvidia

Abrimos el xorg.conf

gedit /etc/X11/xorg.conf

Buscamos Section "Device" y en la opción Driver entre la comillas colocamos nvidia.

Reiniciamos y nos debería aparecer el logo de nvidia antes de la pantalla de login del usuario.

Cabe destacar que cada vez que cambiemos el Kernel debemos teclear en la terminal de nuevo module-assistant auto-install nvidia con su respectivo linux-header instalado.

Ejecutar:

sudo ddcprobe | less

Mostrar VertRefresh y HorizSync:

sudo ddcprobe | grep monitorrange

Ejemplo de output:

monitorrange: 24-82, 50-75

24-82 es el HorizSync rates y los dos ultimos son los valores VertRefresh (50-75).

Grazie ad un mio amico e collega ho scoperto questa distribuzione per me "assolutamente nuova". Ne avevo sentito parlare, ma il mio attaccamento a Debian non mi ha mai suscitato interessamento per distribuzioni diverse eccetto Gentoo. ArchLinux infatti è, a mio parere, molto piu vicina a Gentoo che non a Debian. Il sistema di gestione dei pacchetti PacMan è davvero molto potente (tanto quanto apt) ma la differenza è che Arch contiene dei repository stile Gentoo, cioè con dei pacchetti non precompilati ma da compilare. Naturalmente questa è una piccola differenza forse per molti irrilevante, la differenza maggiore rispetto a Debian, ma vicina a Gentoo, è quella della configurazione del sistema che avviene in maniera meno automatizzata, come avviene invece in Debian. Questo non può che arricchire l'utente di conoscenza e renderlo ancora più consapevole e partecipe di cosa sta installando/configurando sulla sua macchina. Si può dire quindi che ArchLinux è tra Debian e Gentoo. Inizialmente certo si ha qualche problema, perchè è tutto piu o meno manuale, ma alla fine tutto si risolve grazie al Wiki della comunità ArchLinux.it, al forum e al canale IRC. Vi parlerò prossimamente dei software minimali che utilizzo. Viva ArchLinux! :P

Grazie ad un mio amico e collega ho scoperto questa distribuzione per me "assolutamente nuova". Ne avevo sentito parlare, ma il mio attaccamento a Debian non mi ha mai suscitato interessamento per distribuzioni diverse eccetto Gentoo. ArchLinux infatti è, a mio parere, molto piu vicina a Gentoo che non a Debian. Il sistema di gestione dei pacchetti PacMan è davvero molto potente (tanto quanto apt) ma la differenza è che Arch contiene dei repository stile Gentoo, cioè con dei pacchetti non precompilati ma da compilare (PKGBUILD). Naturalmente questa è una piccola differenza forse per molti irrilevante, la differenza maggiore rispetto a Debian, ma vicina a Gentoo, è quella della configurazione del sistema che avviene in maniera meno automatizzata, come avviene invece in Debian. Questo non può che arricchire l'utente di conoscenza e renderlo ancora più consapevole e partecipe di cosa sta installando/configurando sulla sua macchina. Si può dire quindi che ArchLinux è tra Debian e Gentoo. Inizialmente certo si ha qualche problema, perchè è tutto piu o meno manuale, ma alla fine tutto si risolve grazie al Wiki della comunità ArchLinux.it, al forum e al canale IRC. Vi parlerò prossimamente dei software minimali che utilizzo. Viva ArchLinux! :P