PHP - Simple authentication script with PHP_AUTH_USER and PHP_AUTH_PW
November 18, 2007
In this howto, we can create a little PHP authentication system with only few rows of PHP code. We can use header() function to submit the “Authentication Required” Message to the client browser, so on client browser we can see a dialog popup that require Username and Password. When we fill the fields, we can receive variables through arrays: “$_SERVER: PHP_AUTH_USER” and “$_SERVER: PHP_AUTH_PW”. We can use this simple authentication system only if PHP runtime is installed as Apache module.
Now we can see how it works through the source code:
HowTo - Batch Image Resize on Linux
November 16, 2007
Suppose you want resize every your photos to put it on web. As you know, you can’t upload your photos on a webpage with the highest resolution because a web gallery became inaccesible and too slow to load. Suppose that you have a folder containing every photos of you holidays and you want resize it at 640 of width mantaining original aspect ratio. To make a resize there are many tools but I suggest a command line tool called “mogrify”. This tool will be installed with ImageMagick Libraries, so you have to install ImageMagick on you Linux.
VirtualBox - Window XP virtualized in seamless modality on Ubuntu Gutsy 7.10
October 24, 2007
This is a screenshot of seamless modality. Cool effect!
Often there are many people that would like to use Windows XP because many software are only for Windows. If you install Ubuntu Gutsy 7.10 (Linux) and Windows XP in two divided partition you must reboot your system and choose every time a system to load when boot loader start up. There is a solution to make a unique desktop for both operating system: VirtualBox OSE in seamless modality. There are two version of VirtualBox: OSE and PE. OSE version is opensource, while PE version is free only for personal use. In this post we will use VirtualBox OSE. (more…)
How to migrate Virtuozzo VPS to OpenVZ
October 22, 2007
To migrate from Virtuozzo VPS to OpenVZ you must “rsync” root area to private area to avoid incompatibilty of OpenVZ and Virtuozzo Cache Templates. Now, follow this example:
Operations we must execute on Virtuozzo System:
Create your VPS with id 98500 using debian etch template (for example)
