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User Mode Linux (UML) allows you to run Linux kernels as user mode processes under a host Linux kernel, giving you a simple way to run several independent virtual machines on a single piece of physical hardware. Let's take a look at UML and how it can give you more bang for the hardware buck, or make it easier to debug the kernel.

SCALE 5X, the 2007 Southern California Linux Expo to be held at the Westin Los Angeles Airport Feb. 10 and 11, announced this week that it plans to host a "Women in Open Source" mini-conference on Feb. 9 at the same location.

The Fritzbox is an all-in-one Linux-based device that supports VoIP, home networking, and even some extension mechanisms. Hacker Guylhem Aznar explains how he simplified his home network with this device.

British university students are being offered cash incentives to write open source software - and the first beneficiary is a Python programmer from Swansea. The UK Free Software Network (UKFSN), a small Hertfordshire-based internet service provider, has announced it will use its profits to form a fund benefitting students developing software that can be modified by its end users.

Despite the ongoing legal drama, Medsphere has won business fromBrooklyn's Lutheran Medical Center. The release quotes Dr. Ken Kizer;" With the power of VistA behind it, OpenVista substantially lowers costs, reduces implementation risk, and shortens the learning curve because so many physicians train at VA hospitals. These and other factors offer clear advantages over other commercial EHR systems." No mention of the term"open source" until the end of the release where the now famous phrase appears again"Medsphere is the leading commercial provider of open source technology for the healthcare industry."

With the new XML technology called Hierarchical Inherited Rule-Interpreted XML, you can replace standard Java properties with dynamic versions.

Real-time Linux specialist FSMLabs is shipping software that may help financial services companies retrofit their electronic trading systems for compliance with new time synchronization requirements in the U.S. and Europe. The company claims that the RTTimeSync add-on for its RTLinuxPro OS can keep nodes synchronized, whether running Linux or Windows.

I can still remember the wow factor when first seeing a copy of Knoppix booting up on a Windows machine. It was many moons again and the idea of a bootable Linux CD seemed strangely miraculous.

Hines Corp. is a management company that oversees a conglomerate of manufacturers in the Midwest and Texas, and a distributorship in New York. It has a diverse IT infrastructure that requires attention around the clock. When Hines CIO Ed Harper decided it was time to consolidate and streamline aging legacy systems, he turned from Microsoft to Linux.

The One Laptop Per Child project is considering an arrangement whereby anyone can buy one of the group's self-powered, low-cost Linux laptops for themselves -- provided they buy a second one for delivery to a child in a developing country.

The age of the all-browser based Electronic Medical Record/Electronic Health Record (EMR/EHR) is upon us. Local area network (LAN) based EMR's upon which older generation EMR's companies have built their products is dead. This paradigm shift is occurring now. This development threatens Free and Open Source medical software, practitioners and patients as they have never been threatened before.

As Ubuntu continues to make its presence known throughout the world, it was only a matter of time before the project spawned an offshoot variation or two that would enable people with lower-spec machines to participate in all that Ubuntu goodness.

Episode 174 of The Linux Link Tech Show is now available for download:
OGG
MP3

We interview Jeremy Allison from Google and the Samba Project
Upgrading Trixbox
Dan gets use to the Gnome desktop
Apple product roundup
Upcoming Linux conventions

And much, much more

A thread on the lkml began with a query about using O_DIRECT when opening a file. An earlywhite paper written by Andrea Arcangeli [interview] to describe the O_DIRECT patch before it was merged into the 2.4 kernel explains,"with O_DIRECT the kernel will do DMA directly from/to the physical memory pointed [to] by the userspace buffer passed as [a] parameter to the read/write syscalls. So there will be no CPU and memory bandwidth spent in the copies between userspace memory and kernel cache, and there will be no CPU time spent in kernel in the management of the cache (like cache lookups, per-page locks etc..)."

PHP has become the most popular application language on the web, but common security mistakes by developers are giving PHP a bad name. Here's how PHP coding errors have become the new low-hanging fruit for attackers, contributing to the phishing problems on the web.

In a court filing reported this week by legal Web site Groklaw, Novell claimed that SCO should pay it almost all of the Unix licensing revenue it has received from Sun Microsystems and Microsoft. This revenue amounts to almost $26 million, and was earned by SCO when it sold Unix licenses to Sun and Microsoft in 2003.

If you want to share your knowledge and ideas with others, you set up a blog. If you want to collaboratively edit Web pages and keep track of changes, you use a wiki. If you need a tool that allows you to quickly set up a page that combines blog and wiki features, with some content versioning capabilities thrown in, you need something like EditThisPagePHP, a PHP script that allows you to create Web pages and do some clever things with them.

Apple's iPhone is undoubtedly beautiful and compelling, but it is wrapped in a cocoon of patents and proprietary software, writes Anthony Taylor. The very similar looking OpenMoko Neo phone, on the other hand is almost entirely open and free of proprietary components.

Most PC users have collections of .mp3 and .ogg files on their PC which is fine for MP3 players and PC listening. But what if you have a standalone CD player that doesn't play .mp3 files and you would like to make your own CD compilations? Here is a simple five step process to convert .mp3 and .ogg files and burn audio CDs that will play anywhere.

This tutorial shows how you can back up and restore hard drives and partitions with Ghost4Linux. Ghost4Linux is a Linux Live-CD that you insert into your computer; it contains hard disk and partition imaging and cloning tools similar to Norton Ghost. The created images are compressed and transferred to an FTP server instead of cloning locally.