The players reviewed here all expect to find the default hardware mountpoint at /dev/dvd. Though they all also allow a user-specified location, I suggest making things easier by making /dev/dvd. Typically the drive itself actually is /dev/cdrom, so you may need to create a link from /dev/cdrom to /dev/dvd. Simply issue the following command (again as root) to make the link:
ln -sf /dev/cdrom /dev/dvd
If you have multiple CD/DVD-type drives, you need to specify the correct device number for /dev/cdrom; for example, mine is /dev/cdrom1 because my CD-RW drive sits at /dev/cdrom.
I tested the players with a variety of DVDs, all legitimately manufactured and purchased. My local library lends DVDs, many of which are in less-than-optimal condition, and they played fine on the test system, with the single exception of an incredibly bad duplication of Bruce Lee's Chinese Connection. I even was able to watch a truly awful DVD of dubious origin, a remarkable event given that our standalone DVD player wouldn't even recognize the disc in its drive. I'm happy to report that in all tests the options for subtitling, language selection, chapter jumps and skins worked.
So your kernel is configured, the DVD drive is installed and connected, and you're ready to watch Shrek for the 40th time. All you need now is a player application, and happily Linux has some excellent DVD player software. The profiles below focus on four of the most popular players: MPlayer, Ogle, VideoLAN Client and xine. See the Freshmeat listings for other available players and DVD amenities.
I've already used a standalone DVD player, so I expect to find most of its features in whatever software player I select. In the players reviewed here, I looked for support for these minimum features: standard transport controls (start, stop, pause, fast-forward and rewind), scene selection, subtitling and audio preferences and DVD menus. In addition to the amenities found on the standalone hardware player, I expect a software DVD player to switch from windowed to full-screen view easily and to offer random seek/relocate, keyboard control of all transport functions and skin support.
Most of my expectations were satisfied by the players I reviewed. See Table 1 for an overview of versions, features, licensing and CPU stress. All of them performed with excellent results, with no clear winner in the “Best Of” category. My advice is to try them all, then use the one(s) that seem best to you. In terms of weight, Ogle is the lightest (it's a DVD-only player) while the others all come in with about the same metric tonnage. Although I briefly described building the programs, the reader should check the player Web sites for available RPMs and other prepackaged binaries.
Table 1. Comparison Table of Linux DVD Players [*Indicates whether a GUI is an optional or default feature of the build process. **The figures shown represent average low-to-peak-CPU usage reported by gkrellm during play of the Blade Runner DVD. System load included XMMS, five active workspaces (under the Blackbox window manager) and an active DSL network connection running either Netscape or Opera.]
|Player||Version Tested||Subtitles||Menu Support||Random Seek||Keyboard Control||GUI*||CPU Usage**||License|
|xine||1-beta12 (lib) 0.9.21 (ui)||Yes||Yes||Yes||Yes||Default||20%–40%||GPL|
Similis sum folio de quo ludunt venti.
Practical Task Scheduling Deployment
One of the best things about the UNIX environment (aside from being stable and efficient) is the vast array of software tools available to help you do your job. Traditionally, a UNIX tool does only one thing, but does that one thing very well. For example, grep is very easy to use and can search vast amounts of data quickly. The find tool can find a particular file or files based on all kinds of criteria. It's pretty easy to string these tools together to build even more powerful tools, such as a tool that finds all of the .log files in the /home directory and searches each one for a particular entry. This erector-set mentality allows UNIX system administrators to seem to always have the right tool for the job.
Cron traditionally has been considered another such a tool for job scheduling, but is it enough? This webinar considers that very question. The first part builds on a previous Geek Guide, Beyond Cron, and briefly describes how to know when it might be time to consider upgrading your job scheduling infrastructure. The second part presents an actual planning and implementation framework.
Join Linux Journal's Mike Diehl and Pat Cameron of Help Systems.
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|The Firebird Project's Firebird Relational Database||Jul 29, 2016|
|Stunnel Security for Oracle||Jul 28, 2016|
|SUSE LLC's SUSE Manager||Jul 21, 2016|
|My +1 Sword of Productivity||Jul 20, 2016|
|Non-Linux FOSS: Caffeine!||Jul 19, 2016|
|Murat Yener and Onur Dundar's Expert Android Studio (Wrox)||Jul 18, 2016|
- Stunnel Security for Oracle
- The Firebird Project's Firebird Relational Database
- Murat Yener and Onur Dundar's Expert Android Studio (Wrox)
- SUSE LLC's SUSE Manager
- Managing Linux Using Puppet
- My +1 Sword of Productivity
- Non-Linux FOSS: Caffeine!
- Google's SwiftShader Released
- Doing for User Space What We Did for Kernel Space
- SuperTuxKart 0.9.2 Released
With all the industry talk about the benefits of Linux on Power and all the performance advantages offered by its open architecture, you may be considering a move in that direction. If you are thinking about analytics, big data and cloud computing, you would be right to evaluate Power. The idea of using commodity x86 hardware and replacing it every three years is an outdated cost model. It doesn’t consider the total cost of ownership, and it doesn’t consider the advantage of real processing power, high-availability and multithreading like a demon.
This ebook takes a look at some of the practical applications of the Linux on Power platform and ways you might bring all the performance power of this open architecture to bear for your organization. There are no smoke and mirrors here—just hard, cold, empirical evidence provided by independent sources. I also consider some innovative ways Linux on Power will be used in the future.Get the Guide