The first time I heard about hash tables was after taking a compilers course
during my BSc. The truth is, I was not able to understand and
appreciate their usefulness fully back then. Now that I know more about hash
tables, I decided to write about them so others will see their importance as
I have covered a lot of different scientific packages that are
available under Linux in this space, but the focus has been on Linux running on desktop
machines. This has been rather short-sighted, however, as lots of
other platforms have Linux available and shouldn't be neglected.
So in this article, I start looking at the type of science you can do
on the Android platform. more>>
Today, IBM announces the latest of its Power Systems line of high-end
servers. These are the Power Systems S812LC, the Power Systems S822LC (for
commercial computing) and the high-performance Power Systems S822LC. All
of them are custom-built for Linux.
Vigilante. The word itself conjures up images of a man in a mask,
leaping across rooftops as he chases wrongdoers, dancing with the devil
in the pale moonlight. In films and on TV, the vigilante is usually
the character we support. But would you welcome a vigilante into your
home in real life?
One of my favorite things about grade school was when the teacher would
review for a test by playing Jeopardy. I'm pretty old, so my version
of classroom Jeopardy was done on a chalkboard with the teacher reading
answers from index cards, but the new computer-based versions I see in
schools are at least as cool. more>>
The other evening a bunch of us were sitting in a friend's
living room while a series of photos scrolled across her
TV. The photos were a screen saver served up by her new Apple TV box.
Some of the
pictures were of people,
birds, flowers, cats and other typical stuff. more>>
If you're paying really close attention, you'll remember that
in my last article, I was exploring the rudiments of a script that would
accept a list of words as input and create a word search grid,
suitable for printing. more>>
Recently I wrote a review for the Linux Journal Web
site on the Purism Librem 15 laptop. The goal of this laptop is to provide a piece of modern hardware that
can run 100% free software not just for the OS, but also all device drivers
and firmware up to and including the BIOS. more>>
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I admit it, some tools confuse me. I know they must be amazing, because
programs don't get popular by being dumb (well, reality TV, but that's
another story). I have the same sort of confusion with Vagrant that I
have with Wine, Docker, Chef and countless other amazing tools people
constantly rave about. So in this article, I'm going to break down Vagrant into
its simplest form.
Last week, Disney announced its latest project: Linux Light Bulbs. Although
it sounds like an adorable animated feature starring our favorite OS, it's
actually an exciting new networking technology. Of course, Linux plays a
I wake up in the middle of the night, mouth parched and vision blurry,
and fumble around to find my iPhone. I press my thumb to the fingerprint
scanner, and in the dim blue light, just out of instinct, I squint at the
screen, find the right app, open it, and check the ambient temperature
and air quality indoors. more>>
The folks at iTVMediaCenter recently contacted me about their
one-stop-shop solution for cord-cutters. For $14.99, they sell a program
that consolidates tons of on-line media into a central location so you can
watch it on demand. The problem is, it looks like the application does
little more than open the same Web sites you can open with a browser. more>>
One of the common classes of equations that is encountered in several
branches of science is partial differential equations. So in this article, I
look at a software package called FreeFem++ that is designed to help you
calculate these partial differential equations.
Lunar, one of the lead developers on the Debian ReproducibleBuilds project, has recently outlined a serious security hole that could impact all open-source software, including most Linux distributions. It potentially exposes users to unwanted scrutiny from third parties, including security agencies. His project is designed to close this hole.