Welcome to the LinuxFocus September/October 2004
Is the GPL always the right license?
For software the GPL works well because it forces you to give
back any changes and enhancements. In other words the software
is free and you are free to change it but the price you pay is
that you must make your improvements available. This causes the
software to grow and improve over time.
For documentation that comes directly with the GPL software the
FDL (Free documentation license) is the right license because
it does the same things to documentation that the GPL does to
What about documentation that does usually not get updated?
Well, there the GPL trick does not work because the feedback
chain that brings back any enhancements does not exist.
LinuxFocus was distributed for several years under the FDL but
the times are changing. As Linux becomes more and more
important it attracts also the bad guys who try to abuse the
system and make money without giving anything back. All you
have to do is print the articles, tell everybody how good you
are to help the open source community... and the money runs
into your pocket. The real work is done by others. You only
take and give nothing back. No new articles and no updates.
We like to have maximum freedom but we must stop those guys
especially when they send you their "happy open source
promotion mails" via MS-outlook.
has a number of licenses which are designed to stop such
exploits. They are still very free licenses but it is not the
GPL. We have therefore changed our license. For almost all our
readers there will be no change but anybody who tries to make
profit will have to give something back.
-- Guido Socher
- The mystery of mount points , by Guido
This article explains the concept of mount points but I hope
the article has also some information which is interesting to
readers who are not new to linux.
- Simple Animation , by Alexander
Creating a simple animation is fun and easy, for children and
The LinuxFocus Tip
Replacing colors in the color-map of an indexed
Gimp is one of the most powerful image editing programs but
there is one thing that it can not do: Direct editing of the
color map. You can do this with the good old xv program
http://www.trilon.com/xv/downloads.html) Save your image as a
gif file and open it with xv. Go to Windows->Color Editor.
Now you can easily replace one color with any other color. Just
select the color in the color-map and change it. In the example
on the right we replace the blue window of this little house
with a black one. Editing of the color-map is usually more
exact than selections in gimp. In cases where the pixels in
question are not next to each other it is the only way to
change the color. Using selections in those cases would be