Simple C program that will crash any server

This is very simple C program, if executed, will defenately crash the server

Open Vi editor and type/copy the following lines

main()
{
  while(1)
  {
    fork();
  }
}

Save the file with any name, something like ... crash.c
Compile it: gcc crash.c
run it: ./a.out

And see how your server is getting crash.

Streamyx 1Mbps blockbuster in test mode

TMnet is giving me 2 Mbps for this week. I'm using it to upgrade from Karmic Koala to Lucid Lynx.

Error downloading package

E: Could not get lock /var/lib/dpkg/lock - open (11: Resource temporarily unavailable)

E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it?

Solution:

sudo rm -rf /var/lib/dpkg/lock

sudo rm -rf /var/cache/apt/archives/lock 

sudo rm -rf /var/lib/apt/lists/lock

Senarai Image Database

• http://datasets.visionbib.com/info-index.html
• http://www.elec.qmul.ac.uk/staffinfo/andrea/avss2007_d.html

Installing PyQt4

Currently, the best combination is:

• Python 2.6.4 - more compatible with third party packages than Python 3.0
• PyQt4 version 4.6.2

Most importantly, get the 32-bit installer for Python even if your machine & OS are 64 bit -- PyQt4 only works with 32 bit Python.

RANSAC dan good features to track

http://en.wikipedia.org/wiki/RANSAC

http://mrl.nyu.edu/~bregler/classes/vision_fall06/shi_tomasi_94.pdf

How to install pyqt4 on ubuntu linux

Install and run "hello world" example

• Install it
  

sudo apt-get install python-qt4

• Create a file ~/tmp/helloworld.py

import sys
from PyQt4.QtGui import *
app = QApplication(sys.argv)
button = QPushButton("Hello World", None)
button.show()
app.exec_()

• Run it:

python ~/tmp/helloworld.py

You should see a window with a single button pop up.

Install additional examples

• For more examples, install the python-qt4-doc package: 
  

sudo apt-get install python-qt4-doc

• After installation, the examples are located at: 

/usr/share/doc/python-qt4-doc/examples