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How to transfer only a certain file extension with rsync

Rsync is the tool of choice if you have to transfer files from a server to another one. The tool is very powerful and has a lot of options, but is not that easy to use when you have in mind what you need to do but you don’t know how.

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Simple smooth expanding element with Javascript without any framework

One common situation in web developing is that you want to expand and collapse an element (maybe a DIV) with a smooth animation. It’s a common request because having a smooth animation helps the user to follow what happens on the page without being disorientated by fast changes.

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Google Analytics API with PHP using a service account

Google APIs are great. You can do almost everything with them: data reporting, file upload, everything. Unfortunately the documentation isn’t that good because same very important informations are not reported there! So you try the examples and they don’t work because of a hidden step you didn’t done.

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Extending PDOStatement for errors checking and other tasks

PDO is a great OO library for interacting with your database from PHP. It has a very consistent interface and your code will be cleaner than ever. And your PHP script will be more portable because PDO is not related to any database, but is a generic library to work with MySQL, PostgreSQL, SQLite and […]

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Display usage hints for your Perl script

Perl is an awesome language. I like it very much more than Python because you can put some imagination inside your code, doing things with your style. I like very much the loose typing because you don’t have to care about the content in your variables: numbers, strings, objects are almost the same. You have […]

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Send mail with Sendmail from Bash command line

eMails are still the most important communication channel on internet. Most of the web applications you can find on the web require an eMail address to register because they will use it for important communications, to recover you password and so on. It’s still a reliable way to identify the users. Well, today I was […]

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Fractals and plasma C source code

Two nice examples of what you can do with the Allegro Library and a bit of math 😀 Fractal C source code Plasma C source code            

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HSL2RGB converter source code (Perl)

Cleaning up my web space I found an old code to convert HSL triplets (Hue Saturation Lightness) to RGB (Red Blue Green). I think the code comes from the Gimp source code and was ported to Perl, but it’s so simple I think you can port easily everywhere. So, why do you need to convert […]