How to install wallpaper clock in Ubuntu

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Wallpaper clocks are inherently wallpapers itself which can show live time and date with nice integration. You won’t get an idea what it really is until you see it for yourself.
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Read more.

In this tutorial, you need to install and use the screenlets.

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Lucid Lynx is the code name of Ubuntu 10.04

This is announced by Mark Shuttleworth in this video :

A release naming scheme is available here :
https://wiki.ubuntu.com/DevelopmentCodeNames

What will be the code name of Ubuntu 10.10 ??

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How to find general informations of your Linux computer

In a script or in a terminal, you can get some informations with the command : uname.

To know the name of your computer, you can use :
uname -n

You can print the kernel name with :
uname -s
In general, the result is « Linux », but the result will be different if you use other UNIX systems, such as SunOS for instance.

Besides, you can display the kernel release :
uname -r

All these informations are displayed with the command :
uname -a

For other informations about this command, as usual, the manual page is well-documented.

Ubuntu newsletter : Karmic available soon !

According to the last Ubuntu Weekly Newsletter, the sixth and final alpha testing for the next Ubuntu release, Karmic Alpha 6, is scheduled for this week (September, 17).
Read more.

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If/else statement in spreadsheets

When you add a division in a spreadsheet document, for example :
=B2/B3

If sometimes the cell B3 is not filled, there is the classic error : « #DIV/0 ! ».
You can use the statement if/else to avoid that kind of error :
=IF(B3=0;0;B2/B3)

Other link :
If-else Statements in OpenOffice Calc

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How to change default linux kernel in GRUB

If you have several GNU/linux kernel installed on your computer (let’s say n), and if you prefer that one of them would be launched by default, you can follow these instructions :
– Edit file /boot/grub/menu.lst with sudo rights
– Change « default » variable to num (0 < num < n-1)
And your system will be launched with that kernel at the nex start.

This method is usefull if you don't have an easy access to the screen and/or the keyboard of the computer, that is to say that you can't select the kernel that you want when grub give you the choice.

As Linux system is well-designed, the option "default" is even documented in the file, as you can see on the following extract of my system file :

## default num
# Set the default entry to the entry number NUM. Numbering starts from 0, and
# the entry number 0 is the default if the command is not used.
#
# You can specify 'saved' instead of a number. In this case, the default entry
# is the entry saved with the command 'savedefault'.
# WARNING: If you are using dmraid do not use 'savedefault' or your
# array will desync and will not let you boot your system.
default 0

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After GTD methods, you can use Getting Things GNOME!

Getting Things Done is a concept created by David Allen. His methods enables to improve productivity, thanks to the use of tasks lists. There are several applications developed to apply GTD methods on computers.

Some of them are web-based, such as toodledo.com (it will probably be the subject of a future article). And other ones are available on GNU/Linux system, such as this quite new software that seems to be interesting :
Getting Things GNOME !

More informations are given in Ploum’s article. You can share your feedback if you have already tested it.

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