Sun's Java como default en Ubuntu

1) Instalar Java de Sun:

sudo apt-get install sun-java6-jre

2) Hacer Java el entorno por defecto:
sudo update-alternatives --config java

Hay 2 opciones para la alternativa java ( proporcionando /usr/bin/java).

  Selección   Ruta                                      Prioridad  Estado
------------------------------------------------------------
* 0            /usr/lib/jvm/java-6-openjdk/jre/bin/java   1061      modo automático
  1            /usr/lib/jvm/java-6-openjdk/jre/bin/java   1061      modo manual
  2            /usr/lib/jvm/java-6-sun/jre/bin/java       63        modo manual

Presione Entrar para mantener la opción actual[*], o escriba el número de la selección: 2

Fuente: https://help.ubuntu.com/community/Java

ARGUS DC-1510 como webcam en Ubuntu

¡Al fin la solución! Encontrada en: http://ubuntuforums.org/showthread.php?t=435463&highlight=argus

If your webcam reports something similar to this:

Code:

$ lsusb
Bus 001 Device 005: ID 2770:9120 NHJ, Ltd Che-ez! Snap / iClick Tiny VGA Digital Camera

Then it is now fully supported by Ubuntu (version 10.04, Lucid Lynx).

Ubuntu has, however, a bug that needs a workaround:

Code:

$ sudo modprobe -rv gspca_sq905
$ sudo modprobe -v gspca_sq905

You have to do this after every reboot or after every time you connect the camera plug.

After this you can use XawTV or VLC to see video from your webcam:
XawTV must not need any configuration. Just install and run it.
With VLC, use the "Open Capture Device" (Ctrl+C) menu and point the "Video device name" to /dev/video or /dev/video0.
aMSN must also recognise the webcam without any issues.
See the mentioned bugreport for tips on making Skype work with it (I haven't tested it).


You may also be able to download still photos or record your own movies with xawtv. Notice that these procedures were not confirmed by me on the most recent versions of Ubuntu.
Recording movies with VLC should work without any issues.

Scroll con 2 dedos en Samsung N220+

For multitouch in touchpad, I created a script and added at startup (system-->preferences-->aplication at starup or similar, I'm using spanish version). It works fine for multitouch.
You can find more info in many forums about this script.
I think that you have to enable Visual Asistance for it works

#!/bin/bash
# enable multitouch
sleep 5
synclient VertTwoFingerScroll=1
synclient HorizTwoFingerScroll=1
synclient EmulateTwoFingerMinW=5
synclient EmulateTwoFingerMinZ=48 

Fuentes:
http://seaborne.blogspot.com/2010/07/ubuntu-on-samsung-n210.html
http://josthalen.wordpress.com/2010/07/03/linux-on-samsung-n210/

Aproximación de Padé en SciLab

function P = Pade(q,n)
  // Aproximacion de Pade de orden «n» para «exp(-q.s)»
  // Calculado como:
  //      $\textrm{e}^{-\Theta\,t}\approxeq\dfrac{\sum_{k=0}^{n}\,(-1)^{k}\, c_{k}\,(\theta s)^{k}}{\sum_{k=0}^{n}\, c_{k}\,(\theta s)^{k}}$
  // donde:
  //     $c_{k}=\dfrac{(2n-k)!\, n!}{2n!\, k!\,(n-k)!}$
  // para $k=1,2,\ldots,n$
  s=poly(0,'s');
  Num = 0; // Inicializo el numerador
  Den = 0; // Inicializo el denominador
  nn = prod(1:n); // nn = n!
  n2 = prod(1:(2*n)); // n2 = 2n!
  for k=0:n
    c = (prod(1:(2*n-k))*nn)/(n2*prod(1:k)*prod(1:(n-k)));
    Num = Num + ((-1)**k)*c*(q*s)**k;
    Den = Den + c*(q*s)**k;
  end;
  P = Num/Den;
endfunction

Ahora sí, corregido.

Habilitar la interface GNOME en Ubuntu Netbook Remix 10.04

Para netbooks con soporte para aceleración 3D (Ubuntu Netbook Edition):

sudo ln -s /etc/xdg/xdg-une/autostart/maximus-autostart.desktop /etc/xdg/autostart/ #this makes Maximus run at login
sudo ln -s /etc/xdg/xdg-une/autostart/netbook-launcher.desktop /etc/xdg/autostart/ #this launches the UNE interface at login
sudo ln -s /usr/share/gconf/une/default/20_une-gconf-default /usr/share/gconf/defaults/
sudo ln -s /usr/share/gconf/une/mandatory/20_une-gconf-mandatory /usr/share/gconf/defaults/
sudo update-gconf-defaults

Para netbooks sin soporte para aceleración 3D (Ubuntu Netbook Edition 2D):

sudo ln -s /etc/xdg/xdg-une/autostart/maximus-autostart.desktop /etc/xdg/autostart/ #this makes Maximus run at login
sudo ln -s /etc/xdg/xdg-une-efl/autostart/netbook-launcher-efl.desktop /etc/xdg/autostart/ #this launches the UNE interface at login
sudo ln -s /usr/share/gconf/une/default/20_une-gconf-default /usr/share/gconf/defaults/
sudo ln -s /usr/share/gconf/une/mandatory/20_une-gconf-mandatory /usr/share/gconf/defaults/
sudo update-gconf-defaults

Para elegir una interfase, desloguearse y en la pantalla de login elegir la deseada.

Fuente: http://www.webupd8.org/2010/06/how-to-get-most-out-of-ubuntu-netbook.html

Cambiar la política de consumo del CPU

Para conocer la política en uso:

cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor

Para conocer las opciones de consumo del CPU:

cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors

Para Cambiar la política actual:

sudo echo ondemand > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor

(Cambiar ondemand por la política deseada. Para Ubuntu 10.04 Netbook Remix en Samsung N220+ con CPU Intel Atom N450 puede ser: conservative, ondemand, userspace, powersave, performance).

PPA for Samsung Netbooks

https://launchpad.net/~voria/+archive/ppa

Tegaki en Ubuntu 10.10

 Website oficial: http://tegaki.org/

Instalarlo con:

sudo apt-get install tegaki-recognize tegaki-train tegaki-zinnia-simplified-chinese python-tegaki python-tegaki-gtk python-tegakitools

Para integrarlo con iBus (los repos de Maveric andan para Lucid):

Primero actualizar python-tegaki-gtk desde: http://packages.ubuntu.com/maverick/python-tegaki-gtk

Después, instalar ibus-tegaki desde: http://packages.ubuntu.com/maverick/ibus-tegaki

Por último, agregar el método de entrada a iBus (otro - Tegaki).

Fyre

http://fyre.navi.cx/

Excelente programa para generar fondos abstractos. Está en los repositorios de Ubuntu:

sudo apt-get install fyre

Calendario La Germinadora '60s

En la década del '60, La Germinadora publicó un calendario de siembra de hortalizas y flores, adaptado para la zona central de Argentina, que se obsequiaba a los clientes que compraban sus semillas. Y acá está, infalible desde 1963 para Santa Fe y alrededores.

Concatenar varios pdf en uno

Hay que usar el programa pdftk que se instala de los repositorios.

$ sudo apt-get install pdftk

Ejemplo de uso:

Concatenar los archivos in1.pdf, in2.pdf en un único archivo llamado out.pdf.

$ pdftk in1.pdf in2.pdf cat output out.pdf

Ubuntu Peronista: Instalar Adobe Flash 10.0.1 RC en Ubuntu 64 bits

Ubuntu Peronista: Instalar Adobe Flash 10.0.1 RC en Ubuntu 64 bits



En síntesis:

wget http://queleimporta.com/downloads/flash10_x64_en.sh && sudo chmod +x flash10_x64_en.sh && sudo sh ./flash10_x64_en.sh


Contenido de flash10_x64_en.sh:



#!/bin/bash
# Script  created by
# Alejandro Cuervo 3[at]cuervo[dot]net
# Released under GPL


echo "Closing Firefox"
sudo killall -9 firefox
sudo killall -9 firefox-3.5


echo "Removing previous installs of flash:"
sudo apt-get remove -y --purge flashplugin-nonfree gnash gnash-common mozilla-plugin-gnash swfdec-mozilla libflashsupport nspluginwrapper
sudo rm -f /usr/lib/mozilla/plugins/*flash*
sudo rm -f ~/.mozilla/plugins/*flash*
sudo rm -f /usr/lib/firefox/plugins/*flash*
sudo rm -f /usr/lib/firefox-addons/plugins/*flash*
sudo rm -rfd /usr/lib/nspluginwrapper


echo "Installing Flash Player 10 64 Bit ver 10.0.42.34"
cd ~
wget http://download.macromedia.com/pub/labs/flashplayer10/libflashplayer-10.0.45.2.linux-x86_64.so.tar.gz
tar zxvf libflashplayer-10.0.45.2.linux-x86_64.so.tar.gz
sudo cp libflashplayer.so /usr/lib/mozilla/plugins/


echo "Linking libraries "
sudo ln -sf /usr/lib/mozilla/plugins/libflashplayer.so /usr/lib/firefox-addons/plugins/
sudo ln -sf /usr/lib/mozilla/plugins/libflashplayer.so /usr/lib/xulrunner-addons/plugins/


echo "cleaning up"
sudo rm -rf libflashplayer.so 
sudo rm -rf libflashplayer-10.0.45.2.linux-x86_64.so.tar.gz
sudo rm -rf flash10_x64_en.sh


echo "Done :-)"
echo "You may re-start Firefox now and enjoy native 64 bit Flash!"

Repositorios VIP para Ubuntu

PlayDeb

http://www.playdeb.net/

The creators of getdeb.net present to you our latest service that caters to the Ubuntu gamer.

Not sure what game you want? Just looking for something to kill some time? All games are well categorized and we offer a comprehensive search.



 GetDeb

http://www.getdeb.net

GetDeb is an unofficial project with the mission to provide the latest open source and freeware applications for the current Ubuntu Linux release, in an easy to install manner.

The GetDeb repository extends the official repositories by providing latest versions and new applications. Unlike the official packages, GetDeb packages do not have a predefined release schedule - new software versions are provided as they become available from their authors. There is a short and limited testing phase instead of a full testing cycle to ensure packaging quality, however it is less strict than Ubuntu's official requirements.

Voces españolas para festival en Ubuntu

Dos paquetes .deb desarrollados por la Junta de Andalucía para Guadalinex se pueden bajar de:

http://forja.guadalinex.org/frs/?group_id=21

Seleccionar en festival mediante:

• festival> (voice_JuntaDeAndalucia_es_pa_diphone) --> voz masculina
• festival> (voice_JuntaDeAndalucia_es_sf_diphone) --> voz femenina

Nota:

espeak es más completo que festival, y se instala por defecto en Ubuntu.