Ubuntu get popularity from other Linuxes

Ubuntu become more and more popular, but is it due to new users that come from Windows ?

I do believe to wikipedia statistics as it only resource that is visited by all internet user no matter what OS or browser they use.

data sources links:
http://stats.wikimedia.org/wikimedia/squids/SquidReportOperatingSystems.htm
http://stats.wikimedia.org/archive/squid_reports/2011-10/SquidReportOperatingSystems.htm

Result show that Ubuntu get popularity from other Linux systems, but we see 0.07% of grow :) in general.
Does it mean that Linux users become more lazy and choose Linux that works out-of-the-box, and fed-up with doing all from scratch ? or it is just statistical rounding that significant grow other OS in amount of users
red - decrease of popularity.
green - grow of popularity.

Fedora 16 java plugin to FireFox

Even after installing jre, you will have problem with java applets in FireFox.
javaws http:/........xxxxxx.jnlp does not work - error "Command not found".

Useful link:
http://java.com/en/download/help/linux_install.xml#rpm

Logs of commands:

cd /usr/lib/firefox/plugins/
sudo ln -s /usr/java/default/lib/i386/libnpjp2.so
Restart FireFox

Fedora 16 Useful Extensions for Gnome 3.2

0. Pre step:
sudo yum install dconf-editor
sudo yum install gnome-tweak-tool
mkdir ~/.local/share/gnome-shell/extensions

1. Revome Accessibility menu:
source of wisdom:site1 site2. Perfect page for Russian Ubuntu users - read here.

- Download sources noa11y-X.X.tar.gz from http://www.fpmurphy.com/gnome-shell-extensions/.
- Unzip it to ~/.local/share/gnome-shell/extensions
- gnome-tweak-tool does not recognize it to install from UI. So do it from terminal:
gsettings get org.gnome.shell enabled-extensions
store exited extensions list in clip-board
gsettings set org.gnome.shell enabled-extensions "['noa11y@fpmurphy.com',<List from previous/copied extensions >]"
- Restart GNOME Shell ([Alt]+[F2], press "r", press [ENTER]) or logout/login.

2. Removable drives and 'Places' folders:
sudo yum install gnome-shell-extensions-places-menu
- Restart GNOME Shell ([Alt]+[F2], press "r", press [ENTER]) or logout/login.

3. Enhance ALT+TAB behaviour:
sudo yum install gnome-shell-extensions-alternate-tab

4. Power OFF from top menu
DOES NOT WORK without image for user, please assign image before activation:
sudo yum install gnome-shell-extensions-alternative-status-menu

5. In grid layout of all windows it is hard to find your application, make it more clear:
sudo yum install gnome-shell-extensions-native-window-placement

6. To manage properties of the extension use
Alt + F2 ,  "dconf-editor" , org > gnome > shell > extensions > "required extension"

7. Skype indicator to top panel, look here.

8. Pidgin indicator to top panel, look here.

9. Remove disabled bluetooth icon. does not work, due to bug link1.

10. TODO: convenient System Monitor for CPU and Memory.

11. TODO: Weather extension. try link,

12. TODO: Top panel autohide and overlay for windows images - link1,

13. TODO: remove Battery icon when on cable.

14. TODO: Is it possible to shorten length between icons in top panel ?

TODO:
http://www.webupd8.org/2011/06/move-icons-from-message-tray-to-top.html
http://www.webupd8.org/2011/10/gnome-shell-mediaplayer-extension.html
http://smashingweb.ge6.org/gnome-3-extensions-for-fedora-16/
IM Notifications for Gnome 3 http://www.webupd8.org/2011/11/never-miss-im-notifications-in-gnome.html

Cut margins for PDF file to ease reading on Kindle DX

That works best for me is: pyPdf + custom script.

Description: just specify how much should be cropped. No huge difference in size of result PDF.

Install pyPdf module: "sudo yum install pyPdf"(Fedora) or "sudo apt-get install python-pyPdf"(Ubuntu)

Save scripts to "pdf_crop.py"
Usage:
"-m" mean  margin = "left top right bottom"
Examples:
python pdf_crop.py -m "25 30 7 25" -i progit.pdf
python pdf_crop.py -m "-5 0 -5 0" -i java_concurrency_in_practice.pdf


Consider also: calibre (in ubuntu repo), k2pdfopt, PaperCrop, and pdfread.

Pdfcop is useful tool by means of it I could easily read PDFs on it. It removes margins/borders of PDF.
This tool is not ideal - it always increase size of document in 2 till 100 times, even ones from 3Mb to 540Mb.

On Fedora:
sudo yum install texlive-utils
usage:
pdfcrop input.pdf output.pdf

Ubuntu users could try.

Also consider PDFEdit application
sudo yum install pdfedit
or
sudo apt-get install pdfedit

Example of cut is here , but I failed to use it.

Additional tools that could come in handy are here.