Today in Open Source: SteamOS will be released for download December 13. Plus: Steam Machines ship to beta testers, and photos from the Steam Machine production line

Molecular dynamics computations make up a very large proportion of the computer cycles being used in science today. For those of you who remember chemistry and or thermodynamics, you should recall that all of the calculations you made were based on treating the material in question as a homogeneous mass where each part of the mass simply has the average value of the relevant properties. Under average conditions, this tends be adequate most times. But, more and more scientists were running into conditions that would be on the fringes of where they could apply those types of generalizations.

Tails, The Amnesic Incognito Live System, version 0.22, is out. All users must upgrade as soon as possible - this release fixes numerous security issues. Notable user-visible changes include: Upgrade to Iceweasel 24.2.0esr that fixes a few serious security issues; stop migrating persistence configuration and access rights - instead, disable all persistence configuration files if the mountpoint has wrong access rights; upgrade to NSS 3.15.3 that fixes a few serious security issues affecting the browser; switch to Iceweasel 24.2.0esr and Torbutton 1.6.5; incremental upgrades are ready for beta-testing.

So you have a great business idea for a wonderful IT product or service, and you want to build your high tech startup around it. Having the idea is a great start, but you will have to build an IT solution/service to get your business off the ground; be it a website, software solution, social network, or mobile app. Which programming language to choose to write these IT products is always the question to get the startup going on a reasonable budget. The truth is, you can write a great product in any language, if you know what you are doing. And when users are looking at a great product they really don’t know which language was used to create it, or how much code it took, nor do they care. But when it comes to time and budgets, there are unique situations, like getting a startup off the ground, where the choice of a programming language can make a difference between success or failure.

Most Linux desktop environments have its own GUI that allows users to configure user-specific auto-start programs or services. This tutorial describes how to start a program automatically in various Linux desktop environments.

The Acer C720 was recently released as the latest Google Chromebook selling for just $199 USD. I have been running the Acer C720 Chromebook recently but not with Chrome OS and instead Ubuntu 13.10 Linux. This Chromebook with a Haswell-based dual-core Celeron CPU runs Ubuntu Linux rather nicely. Here are the first thorough benchmarks from this low-cost laptop.

After a protracted legal battle, the Horowhenua Library Trust, the birthplace of the open source Koha integrated library system, has succeeded in preventing an American defence contractor from poaching its trademark.

The Fedora project held a go/no-go meeting today and the decision was reached to go ahead with the release of F20 based on release candidate RC1.x. It typically takes a few days for the release to hit the mirrors.

It was announced today by Robert Ancell at Canonical that right now they're running on a heavily-patched version of GNOME 3.6 and that they're not looking forward to upgrading the gnome-control-center version since it would involve a lot of work. Right now Canonical carries 61 patches atop the gnome-control-center and they are uninterested in upgrading the patches against the latest GNOME software code.

On Thursday, a Korean court ruled that Apple did not violate three Samsung patents related to messaging services.

The Seoul Central District Court rejected Samsung’s request that Apple should pay 100 million won ($95,000) in damages, as well as a ban on sales of older iPhones and iPads. According to the AFP, the court noted that two of three patents in dispute are invalid because they can be easily developed using technologies that already exist.

I've mentioned geocaching before, but if you've never taken the time to go out and do it, you're really missing out. Whether you're dragging your family through two feet of snow in the middle of the woods (yeah, I did that last year, I'm still not sure they've forgiven me) or following your GPS around a parking lot looking for a tiny micro-cache, geocaching is fun. You need only a few things to go geocaching:

To date, there has been no way to run apps on Android with real and reliable privacy controls. Android version 4.3 and higher take a huge step in the right direction, letting users install apps while denying some of the apps' attempts to collect the user's data.

Gabriel Knight: Sins of the Fathers was a 1993 adventure game out of Sierra On-Line that was popular back in the day and is now being remade as "Gabriel Knight: Sins of the Fathers 20th Anniversary Edition." The title was announced back in October with plans to release the game for Windows, Apple OS X, iPad, Android, and Linux. The game re-make is being developed by Pinkerton Road and Phoenix Online Studios.

Cogent announced the CSB1890T10-Q15, a tiny (84 x 55mm) COM Express Type 10 Mini module with a 1.5GHz, quad-core AMD GX-415GA SoC, featuring PCI Express, SATA, and USB 3.0. Cogent Computer Systems offers a number of Atmel- and Marvell-based ARM computer-on-modules, and has now introduced a x86-based COM Express Type 10 module built around the AMD GX-415GA. This is the slower of AMD’s two quad-core, 64-bit G-Series SoCs at 1.5GHz, but offers the advantage of a much lower 15 Watt TDP. Other recent COMs built around the SoC include MSC Embedded’s C6C-GX COM Express Type 6 module.

We’re proud to announce that Qt 5.2 is now available. With the release of Qt 5.1 in July, we showcased the Qt for Android and iOS ports and laid down the beginning of some heavy improvements we have now done on Qt’s graphics capabilities. In the last 6 months, we’ve worked very hard to finalize this release and especially these ports.

Free PBX is an open source, web-based PBX solution, FreePBX is easy to customize and adapt to your changing needs. FreePBX can run in the cloud or on-site, and is currently being used to manage the business communications of all sizes and types of businesses from small one person SOHO businesses, to multi-location corporations and call centers. The FreePBX Ecosystem provides you with the Freedom and Flexibility to custom design business communications around your needs.

Port knocking is a security implementation that’s designed to reduce the visibility of TCP servers on the network. A good port knock tool renders TCP servers stealthy, making them invisible to port scanners.

Nearly 18 months after the company was re-organised, Mandriva, the French GNU/Linux company is making progress towards a release, according to Charles-H. Schulz, its marketing and open source relations manager.

Today in Open Source: Linux Mint may have to license Ubuntu binary packages. Plus: Firefox 26 available for download, and a Linux Mint 16 Xfce RC screenshot tour.

This guide explains how to install and configure postgreSQL database server and PhpPgAdmin in ubuntu server 13.10. PostgreSQL is a powerful and reliable object-relational database system. It’s a great alternative for MySQL databse server. It is as easy to set up, performs better and offers far more features.

RHEL 7 is based on the Fedora 19 community Linux release and the Linux 3.10 kernel, both of which first debuted in July. Red Hat has been hardening the Fedora 19 base over the last several months to ensure enterprise-grade stability, Ron Pacheco, senior manager of Platform Product Management at Red Hat, told eWEEK.

PC gamers who are champing at the bit to build their very own "Steam Machines" won't have to wait long to start tinkering, as Valve has revealed that its recently announced SteamOS will be available this Friday.

The announcement comes alongside word from Valve that its prototype Steam Machines, along with the companion Steam Controller, will be shipped out to 300 randomly selected US beta testers on Friday.

CentOS 6.5 includes several welcome upgrades for web hosting companies, including OpenSSL 1.0.1, closing several security vulnerabilities.

New dev language for polishing backends, plus HTML5 tools open-sourced SAP is embracing open-source developers to promote its flagship HANA in-memory data and application architecture

The recently released Mint 16, nicknamed Petra, might be the perfect Linux desktop for newcomers. At its core is Ubuntu 13.10, but on top of this are desktops Mate and Cinnamon, the latter being the Mint project's homegrown user interface. Ubuntu gives a stable foundations on which to build, allowing the project to focus more on its desktops and less on the underpinnings. The result is a pair of desktops both worthy of consideration but with Cinnamon far more interesting as its hits version 2.0

Following the announcement of "Steam Machines" from Valve to "conquer" the living room, the first "Steam Machine" has been revealed recently. The American company iBuyPower has revealed its own vision of a Steam box to compete with the recently released game consoles from Microsoft and Sony.

Red Hat's newest enterprise Linux takes one giant step forward to its release and shifts from MySQL to MariaDB for its database management system needs.

Mere weeks after shipping the final version of Red Hat Enterprise Linux (RHEL) 6.5, Shadowman has announced the first public beta of RHEL 7.

In the era of "big data", large text files (GB or more) could be commonly encountered around us. A typical text editor may not be designed to deal with such large text files efficiently, and may simply get choked while attempting to open a big file, due to insufficient memory. If you are a savvy system admin, you can probably open or touch an arbitrary text file with a combination of cat, tail, grep, sed, awk, etc. In this tutorial, I will discuss more user-friendly ways to open (and possibly edit) a large text file on Linux.

The battle between the good guys and bad guys is a never-ending one. And as they say in the industry, if you have something that somebody wants to gain access to badly enough, they will keep taking shots at it until they succeed. The question is, when will you know that they have succeeded, during or after?