For some reason, some time we need to shutdown or logoff our computer quickly, but when we run some program simultaneously ubuntu 'refused to do it quickly' and pull out a window dialogue as follows :

     Are you sure you want to close all programs and shut down the computer? 
           or 
     Are you sure you want to close all programs and log of the computer?

Maybe you have experienced ?, this tips will tell you how to bay pass it. You can disable the notification by edit the indicator-session behaviour throuh dconf-editor, do as follows :

• Alt + F2 then type : dconf-editor, if your mechines don't give a feedback maybe the dconf-editor is not installed yet, click this install dconf-tools
• Go to  apps > indicator-session then select suppress_logout_restart_shutdown
• and give it check.

dconf-editor

A few days ago I was engage with building web-based application that intended to discover duplicate data in excel files, at first this jobs look simple, but after knowing the amount of data which will processed (35 Million Data) and stored on nearly 70,000 different excel files, hmm .. This work may not seem as easy as imagined.

A little problem appears when I wish to add some data from .dbf (exported from foxpro) to MySQL, it was a new experience for me. The first move that I usually do when I meet some unreadable file format in ubuntu is go to Ubuntu Software Center and search program using keyword file formats that I want to be opened (example : if you want to open dbf format, you can search program using keyword 'dbf'), Yatai .. as usual Ubuntu Software Center never disappoint and always gives a solution.

FFmpeg is a complete solution for record, convert and stream audio and video in Linux.
 
FFmpeg is OpenSource multimedia framework which has ability to decode, encode, transcode, mux, demux, stream, filter, and more of audio / video file. FFmpeg almost supports most audio/video format that currently exist, FFmpeg contains libavcodec, libavutil, libavformat, libavdevice, libswscale and libswresample and can be used by applications (3rd party application).

Darktable is an open source photography workflow application and RAW developer. A virtual lighttable and darkroom for photographers. 

Darktable is an Open Source application that's equal to Adobe Lightroom, this is an other interesting FOSS project that focus on Graphic processing which ability to develop (process) raw images and enhance them. Darktable interface is really good and easy to understand besides of it's contain of many production tool (image operation, white balance, exposure control, tone mapping), plugin and effect which can use it.

This application is fully safe for a beginner, all editing process is fully non-destructive and only operates on cached image buffers for display. The full image is only converted during export.

Autohide Top Panel is GNOME Shell Extension that lets you hide GNOME Shell top panel bar, Autohide Top Panel extension initially created by fpmurphy, this extension now available in GNOME Shell Extension website. See following video to see how it's works

• Autohide Top Panel Extension  

Mint-Z is default Gnome Shell Theme that use in Linux Mint 12 'Lisa'. As other Linux distro does, Linux Mint 12 come with special features/appearance that show their identity, therefore Mint-Z is believed to be the identity of Lisa 'Linux Mint 12'.

Mint-Z is theme that based on Zukitwo but honestly it's not much different from Zukitwo, i notice only a few changes happen including replacing the Activities button with Linux Mint logo, changing the Shell colours, and fixing the GTK3 menu scroll buttons. Although it designed for Linux Mint you can install it in Ubuntu.