CodeIgniter global variable

It's not necessary to use global variable in codeigniter, you can do this:

class MY_Controller extends Controller {
  var $data;    
  //constructor function            
}

class Contact extends Controller { //to.. }

class Contact extends MY_Controller {
 $this->load->view('contact_view', $this->data);
}

Apache Restart / Stop

Restart Apache 2 web server, enter:

# /etc/init.d/apache2 restart

If you are using Ubuntu use sudo:

$ sudo /etc/init.d/apache2 restart

To stop Apache 2 web server, enter:

# /etc/init.d/apache2 stop

$ sudo /etc/init.d/apache2 stop

To start Apache 2 web server, enter:

# /etc/init.d/apache2 start

$ sudo /etc/init.d/apache2 start

Downloading file from my server to my local

To download the file "serials.txt" from your remote home dir to the local computer:

scp user@server.com:serials.txt .

To download the remote file "something" using it's full path to your local computer:

scp user@server.com:/path/to/file/something.txt .

Now the tricky part: using the recursive switch (-r) to download a whole folder to your local computer. The issue you may have is that you DO NOT place a trailing forward slash after the directory name. For instance, this command will NOT work (notice the bold forward slash):

scp -r user@server.com:/path/to/directory/ .

This will give you a message saying the server is trying to write to the parent directory. REMOVE the last foward slash on the path and try again. The next command is CORRECT:

scp -r user@server.com:/path/to/directory .

I have been using a period when talking about downloading so far. Reason: this brings the file into the directory you are currently in. If you wish to take the last command and download it to somewhere else, the command would be:

scp -r user@server.com:/path/to/directory /new/local/location/

¿Cómo contar las líneas de un fichero / archivo en linux?

Contar las líneas de un archivo

• $ wc –l archivo

How to remove all .svn directories from my application directories

find . -name .svn -exec rm -rf {} \;

Before running a command like that, I often like to run this first:

find . -name .svn -exec ls {} \;

Apuntes subversion

# Entramos con root al servidor e instalamos el paquete de subversion

apt-get install subversion

# Creamos una carpeta para guardar los repositorios

mkdir -p /srv/subversion

# Accedemos a la carpeta y creamos un repositorio llamado 'pruebas'

cd /srv/subversion/

svnadmin create pruebas

# Editamos la configuracion del nuevo repositorio

vi /srv/subversion/pruebas/conf/svnserve.conf

# Modificamos las lineas

# anon-access = read

# auth-access = write

por:

anon-access = none

auth-access = write

y descomentamos la de:

# password-db = passwd

# Creamos los usuarios que tendran acceso al repositorio

vi /srv/subversion/pruebas/conf/passwd

# Iniciamos el servicio

svnserve -d -r /srv/subversion/ &

# Ahora tenemos corriendo un servicio que sirve la carpeta /srv/subversion

# y todos los repositorios que existan en ella

# la url para acceder será: svn://IP_DE_LA_MAQUINA/NOMBRE_REPOSITORIO

#

# en mi caso: svn://servidor/pruebas

# Bajamos el codigo en el portatil y ya podemos trabajar

svn co svn://servidor/pruebas /var/www/pruebas/

# Cre una carpeta y un fichero y los envio

cd /var/www/pruebas/

mkdir trunk

svn add trunk

svn commit -m 'Creando el trunk'

# Y a trabajar!!!!

Como saber que programas tengo instalados en mi ubuntu

Fácil, vez a consola y ejecuta:

dpkg --get-selections | grep -v deinstall

Si la lista es larga y quieres puedes generar un archivo por ejecplo en tu ruta por defecto, tu home:

dpkg --get-selections | grep -v deinstall > paquetes-instalados-en-ubuntu



...espera! quieres la lista más completa y con fechas???

prueba esto:

cat /var/log/dpkg.log | grep "status installed"

Diferencia entre apt-get update y apt-get upgrade

Seguramente, muchas veces hemos usado:
# apt-get update
# apt-get upgrade
Pero, ¿qué hace cada orden o comando?

Cuando nosotros utilizamos #apt-get update, lo que en realidad estamos haciendo es actualizar los repositorios --ver si hay algo nuevo--, es decir actualizar la lista de todos los paquetes, con la dirección de dónde obtenerlos para que a la hora de hacer la búsqueda y su posterior descarga, sea más rápida.

En cambio, cuando utilizamos #apt-get upgrade, lo que hacemos es una actualización de nuestro sistema con todas las posibles actualizaciones que pudiera haber, es decir no sólo actualiza nuestro sistema operativo sino que también las aplicaciones que están contenidas en los repositorios.

En resumen: el update lista los paquetes de los repositorios y el upgrade instala las actualizaciones.

Who owns facebook?

Mark Zuckerberg

Status: Founder, CEO

Age: 27

Residence: Palo Alto, CA

Education: Two years at Harvard University

Accel Partners

Status: Venture Capital Investor

Founded: 1983

Location: Palo Alto, CA

Dustin Moskovitz

Status: Former Employee

Age: 27

Residence: San Francisco, CA

Education: Two years at Harvard University

Digital Sky Technologies

Status: Corporate Investor

Founded: 2005

Location: Moscow, London

Eduardo Saverin

Status: Former Employee

Age: 29

Residence: Miami, FL

Education: BA/BS, Harvard University

Sean Parker

Status: Former Employee

Age: 32

Residence: San Francisco, CA

Education: High School Graduate,

Oakton High School,VA

Peter Thiel

Status: Angel Investor,

Member of Board of Directors

Age: 44

Residence: San Francisco, CA

Education: JD, Stanford University

Sheryl Sandberg

Status: Current Employee

Age: 42

Residence: Silicon Valley

Education: BA, Harvard College; MBA, Harvard Business School

Microsoft

Status: Corporate Investor

Founded: 1975

Location: Seattle, WA

Greylock Partners

Status: Venture Capital Investor

Founded: 1965

Location: Menlo Park, CA; Cambridge, MA

Meritech Partners

Status: Venture Capital Investor

Founded: 1999

Location: Palo Alto, CA

Elevation Partners

Status: Venture Capital Investor

Founded: 2004

Location: Menlo Park, CA

Jim Breyer

Status: Angel Investor

Age: 50

Residence: Woodside, CA

Education: BS, Stanford University;

MBA, Harvard University

Goldman Sachs

Status: Corporate Investor

Founded: 1869

Location: New York, NY

Chris Hughes

Status: Former Employee

Age: 28

Residence: New York, NY

Education: BA, Harvard University

Li Ka-Shing

Status: Angel Investor

Age: 83

Residence: Hong Kong

Matt Cohler

Status: Former Employee

Age: 34

Residence: San Francisco, CA

Education: BA, Yale University

Jeff Rothschild

Status: Current Employee

Age: 56

Residence: San Francisco, CA

Education: BS in Psychology, MA in Computer Science, Vanderbilt University

Adam D'Angelo

Status: Former Employee

Age: 27

Residence: Palo Alto, CA

Education: BA, California Institute of Technology

Owen Van Natta

Status: Former Employee

Age: 42

Residence: San Francisco, CA

Education: BA, University of California,

Santa Cruz

T. Rowe Price

Status: Corporate Investor

Founded: 1937

Location: Baltimore

WTI

Status: Venture Capital Investor

Founded: 1980

Location: San Jose, CA

Reid Hoffman

Status: Angel Investor

Age: 44

Residence: San Francisco, CA

Education: BS, Stanford University; MA Oxford University

Mark Pincus

Status: Angel Investor

Age: 45

Residence: San Francisco, CA

Education: BS, University of Pennsylvania; MBA, Harvard Business School

Interpublic

Status: Corporate Investor

Founded: 1870 (predecessor company)

Location: New York, NY

Marc Andreessen

Status: VC Investor and Board Director

Age: 41

Residence: Silicon Valley

Education: BA, University of Illinois at Urbana-Champaign

Justin Rosenstein

Status: Former Employee

Age: N/A

Residence: Silicon Valley

Education: Stanford (did not graduate)

David Choe

Status: Former Employee

Age: 35

Residence: Los Angeles, CA

Education: California College of the Arts

Andreessen Horowitz

Status: Venture Capital Investor

Founded: 2009

Location: Menlo Park, CA

Fidelity Investments

Status: Corporate Investor

Founded: 1946

Location: Boston

David Ebersman

Status: Current Employee

Age: 41

Residence: Silicon Valley

Education: BA, Brown University

Mike Schroepfer

Status: Current Employee

Age: 46

Residence: San Francisco Bay area

Education: BA and MA, Stanford University

Theodore Ullyot

Status: Current Employee

Age: 43

Residence: San Francisco Bay area

Education: BA, Harvard; JD, University of Chicago

Samwer Brothers: Marc, Oliver, and Alexander

Status: Angel Investors

Age: Marc, 40; Oliver, 37; Alexander, 32

Residence: Berlin, Germany; Silicon Valley

Education: Marc, JD, Univ. of Cologne. Oliver, Bus. Degree from WHU. Alexander, MA, Oxford; MBA, Harvard University

General Atlantic

Status: Venture Capital Investor

Founded: 1980

Location: New York, NY

Ezra Callahan

Status: Former Employee

Age: 31

Residence: Los Angeles, CA

Education: BS, Stanford University

Kleiner Perkins

Caufield & Byers

Status: Venture Capital Investor

Founded: 1972

Location: Menlo Park, CA

Cameron Winklevoss

Status: Enemy

Age: 30

Residence: Unknown

Education: BA, Harvard University; MBA, University of Oxford

Tyler Winklevoss

Status: Enemy

Age: 30

Residence: Unknown

Education: AB, Harvard University; MBA, University of Oxford

Divya Narendra

Status: Enemy

Age: 29

Residence: Chicago, IL

Education: AB, Harvard University; JD, MBA, Northwestern University (expected 2012)

All Facebook Pages Will Automatically Change to Timeline On March 30th! What You Need To Do Today.

We shared the exciting updates from Facebook regarding the new Timeline capabilities for Fan Pages a few weeks back. It was a voluntary option back then. But, as of tomorrow, all fan Pages will become Timeline.

Publish your new fan Page Timeline by tomorrow, or Facebook will automatically create a default for you.

So now is the time! Go to your Page on Facebook (log in as yourself) and hit Publish Now.

Here’s an example, showing the transition from our old Webtrends Page to our new Timeline:

What You Need To Do

Below is a list of the Timeline features you should incorporate that will help you pump up your Page, and ultimately help boost your fan engagement:

1.	Upload a Cover Photo

The cover photo is a prominent, eye-candy picture that displays on top of your Timeline Page. It can be up to 851px by 315px. Be mindful of Facebook’s policies about your cover photo.Cover photos cannot include:

• Price or purchase information, such as “40% off” or “Download it at our website”.
• Contact information such as a website address, email, mailing address, or information that should go in your Page’s “About” section.
• References to Facebook features or actions, such as “Like” or “Share” or an arrow pointing from the cover photo to any of these features.
• Calls to action, such as “Get it now” or “Tell your friends”.
• Covers must not be false, deceptive or misleading, and must not infringe on third parties’ intellectual property

2.

‘Pin’ or ‘Highlight’ your most important or engaging posts, each week Hover over a story (any type of Facebook post: status update, photo, link, video) and ‘pin’ it so it displays at the top of your Timeline. Posts can stay ‘pinned’ for up to 7 days, so make sure to repeat the process every week with different featured posts. You can also click on the star icon on top right corner of a story to ‘Highlight’ a post, which will enlarge that post to the full width of your Timeline.

3.

Select the order of your App icons Photos, Likes, Events and Apps are now found at the top of your Page, directly under the cover photo, showing as App icons that users can click on. You can customize the position of these App icons (Photos is a default App that you cannot move) and display 3 additional Apps of your choice that will be featured here. Users can click on an arrow to browse through your additional Apps, up to a maximum of 12 .

4.	Update your App thumbnails

With Timeline, your App thumbnail is no longer 75×75 pixels but displays as a 111x74px image. You can adjust these images by clicking to ‘Manage’ from the Admin Panel, choose ‘Edit Page’ in the drop-down menu. Under the ‘Apps’ section, click ‘Edit Settings’ for the specific app image you’d like to adjust and it will allow you to change the image, and the name of that App.

5.	Take advantage of the larger App width

The width of the new tabs are 810px by default, and Apps can either be set to 520px or 810px wide on a Page tab now. To take advantage of this full width, publish your App in the WebTrends Social platform using the Advanced Publish flow. Then, make sure to update your App Settings on Facebook by selecting the ‘Wide’ (810px) option in the Developer App (https://developers. facebook.com/apps) under ‘Edit App’. If you have published your Apps with the Easy Publish flow, they will still be displayed with the narrow width of 520px (centered in the Page tab). We will soon update this to 810px wide and notify you prior to the change.
We encourage you to start updating your apps to the full 810px width now!

6.	Manage your Page through the Admin Panel

Use the Admin Panel to view Page Insights and keep track of new activity on your fan Page. Facebook users (whether they are your Page fans or not) can now contact you privately using direct messages. Notifications about new messages will appear right in your Admin Panel. Make sure to respond promptly to your users and keep your community management going!