How to extract embedded images from .xls, .ods or .odt

icon_openoffice
Hi :)

It’s simple. Just 4 steps:

  1. Save a copy of the file as ODS (OpenOffice.org Spreadsheet).
  2. Change the filetype of the copy to ZIP (for example rename File.xls to File.zip).
  3. Open the ZIP.
  4. In the directory called Pictures will be the images, just as in the original.
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How to posting to Identi.ca from the CLI

terminal - cli
Hi :)

Identi.ca is an open source social networking and micro-blogging service.
I like Ideni.ca. It’s good service.

I use CLI (command line) everyday. I like to dented from it. It’s simple.
Just install cURL:

$ sudo apt-get install curl

And type:

$ curl -u username:password -d status="message" http://identi.ca/api/statuses/update.xml

You will receive a response containing the XML coding for your post which acts as a confirmation that your post was submitted.

Also you can create a shell file for this
Open a new text document and add the following, save it as identica.sh (or anything ending in sh):

#!/bin/bash
curl -u username:password -d status=″$1" http://identi.ca/api/statuses/update.xml

Make sure you change the chmod to 777 using the following command.

$ chmod 777 /path/to/file/

When you located the file (or add a bash prompt) it makes it simplier to identi.ca the rules. For example you can type the following to command to link to the file.

$ ./path/to/idetica.sh "Message"
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Nested X11 environment session


Hi :)

Instead of using a full-blown new virtual X for developing software you can use Xephyr to embed your KDE 4 session into your working KDE 3 or other X11 environment.

If you want to get a minimal KDE session up and running, just launch Xephyr (available in Kubuntu as xserver-xephyr; Gentoo users compile x11-base/xorg-server with USE=”kdrive”):

Xephyr :1 -extension GLX &

You can now launch KDE:

export DISPLAY=:1
/path/to/kde4/bin/startkde &

For other X11 environment just change /path/to/kde4 like:

/usr/bin/startx &

or

/usr/bin/startkde &

or

/usr/bin/startxfce&

You can use “locate” command to find paths like:

locate startkde

Appendix
Happy Nowruz 1387 (Iranian new year holiday)

Good Luck

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What's dpkg-reconfigure

Reconfigure an already installed package like gdm.

dpkg-reconfigure package_name

For example you can reconfigure X Server:

sudo dpkg-reconfigure xserver-xorg
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Root Terminal in Ubuntu

terminal_icon_48_48.jpg
Hi
Ubuntu has the root account disabled.
You use sudo to run commands as root. if you need root access for some work:

  • To start a root shell, but keep the current shell’s environment, use:
    sudo -s
  • To start a root shell (i.e. a command window where you can run root commands), starting root’s environment and login scripts, use:
    sudo -i

There is also a root terminal that is in the Applications menu. You have to right-click to edit the menu’s and add a check to the root terminal in System Tools items.

Don’t forget to type ‘exit’ (or press Ctrl+D) to switch back to your normal user when you are done.

More information about sudo in Ubuntu wiki

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