This is a minor tutorial in the usage of GnuPG to encrypt, decrypt, and sign emails and files. The examples provided in this tutorial has been tested on Debian GNU/Linux, Devuan GNU/Linux, Arch Linux and Ubuntu GNU/Linux. https://unixsheikh.com/tutorials/gnupg-tutorial.html
This tutorial describes how to set your hostname, domain name and fully qualified domain name properly. Both a mail server and a web server needs to run with the right hostname and domain name. https://unixsheikh.com/tutorials/how-to-set-your-hostname-and-domain-name-correctly.html
This tutorial was written when it was only possible to view videos on YouTube via Flash, however the tutorial is still useful if you need to download videos from YouTube, or some other video service, in an easily manner and watch them on your favorite video player. https://unixsheikh.com/tutorials/an-alternative-way-to-play-youtube-videos-without-using-flash.html
This is a small article that takes an objective look at the PSR-0 autoloader "standard" implemented by PHP-FIG. https://unixsheikh.com/articles/psr-0-is-not-a-solution-it-is-a-bypass.html
A small article about PHP frameworks, design patterns, and the art of programming with passions. https://unixsheikh.com/articles/most-php-frameworks-are-not-for-programmers.html