To create two bridged virtual serial ports use the following command:
socat -d -d pty,raw,echo=0 pty,raw,echo=0
The output will show you which are the virtual ports (or pseudo terminals) created, e.g.:
2010/02/19 16:16:33 socat[9662] N PTY is /dev/pts/3
2010/02/19 16:16:33 socat[9662] N PTY is /dev/pts/4
2010/02/19 16:16:33 socat[9662] N starting data transfer loop with FDs [3,3] and [5,5]
Note: if you are using Ubuntu and you do not have this command, try:
sudo apt-get install socat
The easiest way I found is dumping the binaries into text files using hexdump and then comparing them with your favourite program (diff, Meld, etc.). E.g.:
hexdump -C a.bin >a.txt
hexdump -C b.bin >b.txt
diff a.txt b.txt
I’ve stolen this code from http://code.activestate.com/recipes/457406/ which in turn was stolen / ported from http://inlet-media.de/flvtool2 , made some small fixes in bugs related to the date conversion function, object and array unmarshaling, file name hardcoded, etc… If you want to learn more about the FLV format and metatags read Acrobat’s Video File Format Specification Version 10
Read more…
The goal of this new blog category called “Programming FAQ” is to publish short posts with day to day programming problems and their solutions, or at least provide a tip to find the proper solution to your problem. And today we start with this simple and stupid problem that can happen to anyone with poor HTML experience like me. “My HTML table does not seems to inherit the style from a parent element”, here is the example:
<html>
<body>
<div style="color: blue;">
<table>
<tbody>
<tr>
<td>BLUE TEXT</td>
</tr>
</tbody>
</table>
<div>
</body>
</html>
In the below example I would expect to see the “BLUE TEXT” in blue, but is not (at least in FireFox). So what the hell is wrong with my code? probably many things but because I’m not interested in following/reading the W3C recommendations for my uncle’s home page, here is one possible solution: Add the transitional DOCTYPE to your document, or the DOCTYPE that adequate better to your page (read more here). E.g.:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
So, now you know. Never forget the DOCTYPE it is very important… Why? read this… It has to do with poor standards, browsers and all that crap.
