This presentation shows the experience of placing all the content of Wikipedia on a computer with 40 grams: the Raspberry Pi. Slides 1-36 are introduction / demo. After that, there is a little "Do It Yourself".

1. All the knowledge of mankind
in the palm of a hand

2. Deconstructing

3. All the knowledge of
mankind

4. Imagine yourself, calmly
walking in the street
when suddenly...

5. You are assailed by the
cruel doubt:

6. What is the correct
orientation for a
toilet paper?

8. Or, how did that
theorem of infinite
monkeys go again?

10. Or seriously, what is
the story behind the
space shuttle?

13. But, ALLthe
knowledge?

14. Number of pages: 33,088,699
Number of articles: 4,530,955
Number of files: 831,598
Number of edits: 721,601,195
Number of users: 21,533,669
Number of admins: 1,410
As of the 7th of June, 2014:

16. This is
Encyclopædia Britannica:

18. This is
Wikipedia:

20. 2,655 million words across
4.5 million articles (as of
April 2014), implying an
average of 590 words per
article.

21. And inside a
computer?

22. pages-articles.xml.bz2 – Current
revisions only, no talk or user pages.
(This is probably the one you want.
The size of the 13 February 2014
dump is approximately 9.85 GB
compressed, 44 GB
uncompressed).
From http://en.wikipedia.org/wiki/Wikipedia:Database_download

24. Deconstructing – pt.2

25. In the palm of hand

28. Specifications:

30. Summary of B:
US$35
700 MHz ARM11
512 MB RAM
SD storage (up to 128 GB)
40 grams

31. So, how about,

32. We place “The” Wikipedia...

33. In a Raspberry pi?

35. Demo video:
http://youtu.be/8q1f1RQhhqM

37. (courage, there is a long way ahead)

38. Buy a RPI (US$37)
http://www.amazon.com/RASPBERRY-MODEL-756-8308-Raspberry-Pi/dp/B009SQQF9C

39. Buy a SD
Option 1: SD > 45GB
Option 2: SD < 45GB

40. Option 1: SD > 45GB
All Wikipedia can be inside,
but, bigger SD’s are:
Less compatible,
More expensive,
More instable,
Slower.

41. Option 2: SD < 45GB
Place only the OS in the SD,
and the dump in a pen
drive / external HD
(occupies one USB port =/ )

42. Download Raspbian
http://www.raspberrypi.org/downloads/

43. Install OS in the card
http://elinux.org/RPi_Easy_SD_Card_Setup

44. Choose a reader
Option 1: Evopedia
Option 2: Serve MediaWiki
Option 3: Kiwix

45. Option 1: Evopedia
You can use the official
dump, just 9 GB on torrent!
But the reader is less
mature, and it is difficult to
place an external dump.

46. Option 2: MediaWiki (server)
Is what Wikipedia uses to
show pages.
A lot more work, a lot more
time processing, a lot less
performance on rpi.

47. Option 3: Kiwix
Very good in viewing
wikipedia pages and
making a simple server.
Downside: needs to
download own dump,
44 GB...

48. http://www.kiwix.org/wiki/Main_Page

49. Installation
Option 1: Installing only the
server.
Opção 2: Installing
everything.

50. Option 1: only the server
It is already compiled for
ARM!
http://sourceforge.net/projects/kiwix/files/0.9_rc2/kiwix-server-0.9-rc2-
linux-armv5tejl.tar.bz2/download
kiwix-folder$ sudo make install

51. Option 2: everything
It is not compiled for
ARM...
http://www.kiwix.org/wiki/Compilation
kiwix-folder$ ./autogen.sh
Solve all the (damn) dependencies with sudo apt-get install
protip: read through the ./configure file to see the dependencies
Install xulrunner10-dev, not xulrunner-dev
kiwix-folder$ ./configure
kiwix-folder$ make
A LOT of hours later:
kiwix-folder$ make install

52. Finalizing:
$ kiwix
Open dump at SD/pen drive
Fix the index like this:
http://sourceforge.net/p/kiwix/bugs/275/
Profit!

55. Interesting additionals:
Make rpi conect
automatically on a wifi and
if it can’t make it create an
adhoc server
http://lcdev.dk/2012/11/18/raspberry-pi-tutorial-connect-to-wifi-or-create-an-encrypted-
dhcp-enabled-ad-hoc-network-as-fallback/
Or with a secure connection (what? WEP? no way!):
http://www.novitiate.co.uk/?p=183

56. Interesting additionals2:
Configure VNC server so we
can see the screen remotely.
http://elinux.org/RPi_VNC_Server

57. Thank you
slideshare.net/
marrciovr