Linux Journal - The Original Magazine of the Linux Community

Make TV Awesome with Bluecop

Shawn Powers — Wed, 16 May 2012 17:20:39 +0000

A few weeks back, I was whining that although Doctor Who was available on Amazon Prime streaming, I didn't have any way to watch it on my television. Thankfully, my friend Richard Servello pointed me to the bluecop repo for XBMC. Not only does bluecop support Amazon Prime streaming, but it also has add-ons for Hulu and countless other network-video-streaming collections. more>>

Hack and / - Password Cracking with GPUs, Part I: the Setup

Kyle Rankin — Tue, 15 May 2012 19:54:47 +0000

Bitcoin mining is so last year. Put your expensive GPU to use cracking passwords.

When the Bitcoin mining craze hit its peak, I felt the tug to join this new community and make some easy money. I wasn't drawn only by the money; the concepts behind Bitcoin mining intrigued me, in particular the new use of graphics processors (GPUs). With a moderately expensive video card, you could bring in enough money to pay off your initial investment and your electricity bill in a relatively short time. more>>

An Introduction to Application Development with Catalyst and Perl

Henry Van Styn — Mon, 14 May 2012 16:39:11 +0000

Catalyst is the latest in the evolution of open-source Web development frameworks. Written in modern Perl and inspired by many of the projects that came before it, including Ruby on Rails, Catalyst is elegant, powerful and refined. It's a great choice for creating any Web-based application from the simple to the very complex. more>>

Cryptocurrency: Your Total Cost Is 01001010010

Shawn Powers — Wed, 09 May 2012 15:55:15 +0000

Most people have heard of gold. Most people are familiar with dollars. For a handful of geeky folks, however, the currency they hope will become a global standard is digital. Whether it's a problem or not, the currency you use on a day-to-day basis is tied to the government. more>>

HTML5 for Audio Applications

Paul Freitas — Mon, 07 May 2012 21:16:42 +0000

HTML5 lets you play music through compliant browsers—no "cloud" required. more>>

May 2012 Issue of Linux Journal: Programming

Shawn Powers — Wed, 02 May 2012 17:22:59 +0000

Rubies, Pythons and Perls!

It may sound like a new Indiana Jones movie or possibly a cheesy platform-style video game from the 1990s, but the title of this column actually refers to our focus this month—programming! Not that there's anything wrong with daring adventures in remote locations, it's just that all the red tape can be overwhelming. more>>

Three Ways to Web Server Concurrency

Martin Kalin — Tue, 01 May 2012 21:56:25 +0000

Multiprocessing, multithreading and evented I/O: the trade-offs in Web servers.

A Web server needs to support concurrency. The server should service clients in a timely, fair manner to ensure that no client starves because some other client causes the server to hang. Multiprocessing and multithreading, and hybrids of these, are traditional ways to achieve concurrency. Node.js represents another way, one based on system libraries for asynchronous I/O, such as epoll (Linux) and kqueue (FreeBSD). To highlight the trade-offs among the approaches, I have three echo servers written in close-to-the-metal C: a forking_server, a threading_server and a polling_server. more>>

Tales From the Server Room: Zoning Out

Bill Childers — Wed, 25 Apr 2012 19:55:31 +0000

Sometimes events and equipment conspire against you and your team to cause a problem. Occasionally, however, it's lack of understanding or foresight that can turn around and bite you. Unfortunately, this is a tale of where we failed to spot all the possible things that might go wrong. more>>

Mercurial - Revision Control Approximated

Joey Bernard — Tue, 24 Apr 2012 17:17:51 +0000

A short while ago, an article appeared in Linux Journal implying Git was the be-all and end-all of source code revision control systems ("Git—Revision Control Perfected" by Henry Van Styn, August 2011). more>>

New Products

James Gray — Fri, 20 Apr 2012 18:58:00 +0000

New products for April.

Science the GNU Way, Part I

Joey Bernard — Tue, 17 Apr 2012 20:37:00 +0000

In my past several articles, I've looked at various packages to do all kinds of science. Sometimes, however, there just isn't a tool to solve a particular problem. That's the great thing about science. There is always something new to discover and study. But, this means it's up to you to develop the software tools you need to do your analysis. more>>

Complexity, Uptime and the End of the World

Michael Nugent — Mon, 16 Apr 2012 19:52:03 +0000

Poorly implemented monitoring systems can drive an administrator crazy. At best, they are distracting. At worst, they'll keep whoever is on pager duty up for nights at a time. This article discusses the best practices for designing systems that will keep your systems up and stay quiet when nothing is wrong. more>>

Blue Drop Awards Celebrate Achievements in Open Source Web Development

Katherine Druckman — Wed, 11 Apr 2012 19:22:01 +0000

The first ever Blue Drop Awards for excellence in Drupal development were announced yesterday. Organized and led by Ben Finklea of Volacci, the awards were both a community effort to celebrate the great work of Drupal Developers, and also a vehicle for Drupal and open source evangelism. more>>

MariaDB/MySQL, PostgreSQL and SQLite3 - Comparing Command-Line Interfaces

Daniel Bartholomew — Wed, 11 Apr 2012 16:12:50 +0000

Don't be afraid of using your chosen database's command-line client. more>>

Non-Linux FOSS: TrueCrypt

Shawn Powers — Mon, 09 Apr 2012 19:30:05 +0000

TrueCrypt is a fully open-source tool for encrypting data. That data can be on a completely encrypted hard drive, or just an encrypted image file. Thankfully, the encryption works the same regardless of your platform, so Windows and OS X users can share encrypted files between computers. more>>