More on Peter Sunde, Stallman and Lula

Pablo Lorenzoni on his blog, Nardol, has two good posts on Brazilian President's visit to FISL.

The first, explaining the preparatives for the presidential visit on

FISL10 day 21

And the second telling about the visit itself, on:

FISL10 day3 - the day I met the Presidento

This one, specially, had two good parts which deserves note, the first is the picture which shows what I had told on "Stallman and Pirate meet Brazilian President":

At the front layer, you can clearly see, from left to rigth, Peter Sunde (green jacket), Richard Stallman (red shirt) and Mr. Luiz Inacio Lula da Silva, the Brazilian President.

And the second part from Nardol, is the transcription of part of the President's speech, which I do reproduce here:

“I remember the first meeting we had at Granja do Torto [which is the presidential country residence – similar to Camp David, but less aristocratic], in which I understood absolutely nothing about what these people were discussing, and there was an enormous tension between those defending the adoption of Free Software by Brazil and those defending we should just do what we always did – remain the same, buying and paying for others’ intelligence. Thanks God, in our country, the decision to adopt Free Software prevailed.”

This was one of the most important parts, IMHO also.

Comments

More trickery with gnuplot dumb terminal

In my post " Plotting memory usage on console " the chart doesn't pan the data. Now, using a named pipe, the effect got a little bit nicer. First, we have to run the memUsage.sh script to get a file filled with memory usage info: ./memUsage.sh > memUsage.dat & Then we have to create a named pipe: mkfifo pipe Now we have to run another process to tail only the last 64 lines from the memUsage.dat while [ 1 ]; do tail -64 memUsage.dat> pipe; done & And now we just have to plot the data from the pipe: watch -n 1 'gnuplot -e "set terminal dumb;p \"pipe\" with lines"' And that is it!

Replace transparency in PNG images with white background (for lots of files...)

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Pettry rendered LaTeX equations using PHP

When I was writing a simple scientific webapp, during my undergrads studies, I needed to generate some equations to be shown by the app. I was already familiar with LaTeX equation formatting syntax, so I decided to use this nice peace of software. So, after "googling" a little, I found the imgtex , written by Koji Nakamaru , which is a fast CGI script, written in perl. What I did, was port it to PHP. To run it, you must have a LaTeX distribution and the dvipng software both installed on the same machine which you will run the PHP script. Here is the PHP code: To use this code, you just have to pass the LaTeX commands through GET to the PHP. For example, adding the following string to your URL: http://localhost/imgtex.php?res=300&cmd=x=\frac{-b\pm\sqrt{-4ac}}{2a} The res variable sets the resolution for the generated image and the cmd specifies the LaTeX command. This way, the above URL will produce the following image:

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