Archive for November, 2014

Days Between Dates?

Alert readers will know that I’m working on a major revision to my popular
Wicked Cool Shell Scripts book to come out later this
year. Although
most of the scripts in this now ten-year-old book still are current and
valuable, a few definitely are obsolete or have been supplanted
by new technology or utilities. No worries—that’s why I’m doing the


Synchronize Your Life with ownCloud

Like most families these days, our family is extremely busy. We have four boys who
have activities and appointments. My wife and I both have our own businesses as
well as outside activities. For years, we’ve been using eGroupware to help
coordinate our schedules and manage contacts. The eGroupware system has served us
well for a long time. However, it is starting to show its age. more>>


An Introduction to OpenGL Programming

OpenGL is a well-known standard for generating 3-D as well as 2-D graphics
that is extremely powerful and has many capabilities. OpenGL is defined
and released by the OpenGL Architecture Review Board (ARB).

This article is a gentle introduction to OpenGL that will help you
understand drawing using OpenGL.