Virtual Private Networks can be very handy, but even with easy-rsa scripts it’s a little time taking to add new computers to the network, especially if you frecuently add new machines.
With this handy php script you can automate this process a little bit - you could for example publish it on a web server and [...]

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This is some good news for the cross-browser video support in html5. As you might already know, there is a video tag, that allows videos to be played in browsers without any third party plugins (like flash player, for example).
The problem was that browser developers could not agree on which codec should be used for [...]

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Hace algún tiempo escribí como configurar Kaffeine para poder recibir IB3 usando TDT.
Desde hace unos días otra televisión local, TVMallorca (a la cual, por cierto, ayudamos en su día configurar la emisión a través de internet), está emitiendo en el formato digital.
Desgraciadamente, Kaffeine, al no tener configuradas las frecuencias, no encuentra este canal. Para remediarlo [...]

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Estamos tan rodeados por el software libre y tan acostrumbrados a estar acompañados por él, que casi no nos damos cuenta de la cantidad de open source en todos los sitios. Como el aire, es esencial para la vida, pero ¿quién lo habrá notado antes de verse privado de él?
Quizás esa es la razón por [...]

Posted in linux, negocio No Comments »

Importing a powerpoint presentation into a web application has been always a huge headache for a web developer, especially if your everyday environment is labeled with a penguin. I have seen dozens of converters for windows desktop, but they could not be used in our case.
Unfortunately, the old friend OpenOffice combined with some open source [...]

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I have been using punjab for a while as an interface for BOSH protocol between my browser Strophe applications and other xmpp clients. This worked perfectly until the (sad) day I had no internet connection. Suddenly I could not connect through punjab with a local ejabberd server and got very confusing “not authorized” error messages.
I [...]

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Punjab allows to connect to an xmpp server like ejabberd, from a client that supports http requests only (for ex. javascript / ajax). It uses some clever parallel connections to handle input and output streams, so there is very little latency when sending and receiving messages.
First, install needed libraries:
apt-get install python python-twisted
then, download the source [...]

Posted in linux 3 Comments »

Ejabberd is one of the most popular xmpp servers. It is used mostly as a jabber chat server, but the xmpp protocol serves for any purpose when instant messaging, and message queques are needed.
Anytime when you need people (or software components) communicate in realtime over the network, an xmpp server might be what you are [...]

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mysqldump -u user1 -p -h host1 sourcedatabase | mysql -u user2 -p -h host2 -D destinationdatabase

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Darkice es uno de los programas más populares, a la hora de montar una radio online sobre el GNU/Linux. Es bastante estable y funciona bien con el Icecast2.
Sin embargo, la versión que está en los repositorios tiene dos pegas:
1) no tiene soporte para emisión en el formato mp3. Y aunque el formato libre ogg está [...]

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