A summary of how to set up a full Wikipedia.org mirror using several different approaches: Nginx as a caching proxy in front of wikipedia.org, Kiwix serving a downloaded backup, a full Mediawiki install with a database dump, or a mirror of Wikipedia made with XOWA.
A free, online book on the C programming language. There is also a downloadable .pdf file of the contents of the e-book so you don't have to try to archive the whole website.
A tutorial on making printable envelope templates in OpenOffice.org.
A short blog post that details creating your own SSL certificate using OpenSSL.
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An excellent tutorial on hardening CenOS Linux (and by extension Redhat Advanced Server).
Just what it says on the tin.
A procedure for turning a Debian Linux (Lenny) system installed on a single drive into a Debian Linux system running a two-disk mirror without rebuilding the whole thing. The procedure also shows you how to configure GRUB to boot from either drive.
A concise overview of electronic theory for geeks.
A Subversion tutorial written for software developers and not sysadmins or repository maintainers. Teaches you what you need to know in order to get work done.
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A tutorial on accessing the DBUS system of Linux from Python to manipulate the system configuration.
How to use PySQLite to interact with SQLite databases.
Oskar Andreasson's Ultimate IPtables Tutorial for Linux. Considered one of the best ways to learn how to set up and use IP tables. Comes in multiple formats and several languages, so there should be something for everybody there.
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How to set up a Subversion server using the svnserve daemon in four easy steps. For passing through to Redmine, it works.
An open source ebook about DNS in general and BIND 9 in particular. If you want to know how DNS works in practice and how BIND acts under different circumstances, this is a good way to start without the trial by fire.
A very well done description of decorators in python. Go in depth about how functions are first class objects, scope, self-modifying code, and how everything works. programming languages documentation tutorial
A basic tutorial on writing motion detection and object tracking systems with python using OpenCV. I've used it and it's remarkably usable.
3694 links, including 185 private