The command line can be an intimidating and unforgiving environment. Unlike working in graphical environments, it's not entirely clear what commands one must execute in a terminal to accomplish a given task. Couple this with the fact that the command line does not prevent you from doing things that might cause irreparable damage to your...

"Today, most email is sent like a postcard. We all should want to put our mail back into secure envelopes again. PGP and GPG are two of the leading tools...

Virtual private networks (VPNs) based on the Internet instead of the traditional leased lines offer organizations of all sizes the promise of a low-cost, secure electronic network. However, using the Internet to carry sensitive information can present serious privacy and security problems. By explaining how VPNs actually...

Enter "Mac OS X for Unix Geeks" by Brian Jepson and...

Python is probably the easiest-to-learn and nicest-to-use programming language in widespread use. Python code is clear to read and write, and it is concise without being cryptic. Python is a very expressive language, which means that we can usually write far fewer lines of Python code than would be required for an equivalent application written...

LightTPD is a secure, flexible, and most importantly, light web server designed and optimized for high performance environments. It is open-source and licensed under the revised BSD license. Its event-driven architecture optimized for a large number of parallel connections, its advanced features (FastCGI, CGI, Auth, Output Compression, URL...