More Flexible Formatting with SGMLtools
One of the biggest advantages of the new version is that it is very easy to customize—once you get the hang of DSSSL. As the previous part showed, you don't even need to know a lot about the backend. In DSSSL, you deal with fairly high-level stuff like font names without worrying about how these font names are dealt with in PostScript or groff documents.
The original DocBook DSSSL style sheets supplied by SGMLtools are meant to be customized. All you need to do is write your own style sheet that includes the original one and overrides what you want to customize, often just a few lines to tune parameters. In SGMLtools you'll find a few examples of these customizations. After you set up your own DSSSL style sheet, you must make sure SGMLtools uses it. Do this by giving the -d or --dsssl-spec option pointing to your DSSSL style sheet.
The first question of many Linuxdoc users is, “what about my current documents?” The answer is, you'll have to migrate from Linuxdoc to DocBook within six months from the release date of SGMLtools 2. The package provides a tool to help you in the conversion process.
The first step in the migration process is to make sure your documents are compliant with the latest SGML-Tools 1 version, which will be 1.0.7 or newer. Install this software and run your documents through it to make sure they're up to date.
The second step is to convert your documents with the command sgmltools --backend=ld2db, which spits out DocBook documents. If this run succeeds, you can finalize the migration by reading up on DocBook and seeing whether you are satisfied with the result of the conversion. From this point on, you can continue to write in DocBook.
In order to give you some space for planning your conversion, we'll continue to support SGML-Tools 1 for six months after the release date of SGMLtools 2 (which is unknown now, but should occur fairly close to the publication date of this article—check the web site for details). After six months, SGML-Tools 1 will be removed from the web sites and as far as we are concerned, the Linuxdoc DTD will be history. We'll remind you in comp.os.linux.announce well in advance of this event, and of course, you're free to keep using SGML-Tools 1 for as long as you wish, but we recommend you take the trouble to learn DocBook and start using SGMLtools 2—it'll give you even more flexible formatting power.

Today’s modular x86 servers are compute-centric, designed as a least common denominator to support a wide range of IT workloads. Those generic, virtualized IT workloads have much different resource optimization requirements than hyperscale and cloud applications. They have resulted in a “one size fits all” enterprise IT architecture that is not optimized for a specific set of IT workloads, and especially not emerging hyperscale workloads, such as web applications, big data, and object storage. In this report, you will learn how shifting the focus from traditional compute-centric IT architectures to an innovative disaggregated fabric-based architecture can optimize and scale your data center.
Sponsored by AMD
Built-in forensics, incident response, and security with Red Hat Enterprise Linux 6
Every security policy provides guidance and requirements for ensuring adequate protection of information and data, as well as high-level technical and administrative security requirements for a system in a given environment. Traditionally, providing security for a system focuses on the confidentiality of the information on it. However, protecting the data integrity and system and data availability is just as important. For example, when processing United States intelligence information, there are three attributes that require protection: confidentiality, integrity, and availability.
Learn more about catching the bad guy in this free white paper.
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| Making Linux and Android Get Along (It's Not as Hard as It Sounds) | May 16, 2013 |
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| Home, My Backup Data Center | May 13, 2013 |
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| Trying to Tame the Tablet | May 08, 2013 |
| Dart: a New Web Programming Experience | May 07, 2013 |
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Enter to Win an Adafruit Prototyping Pi Plate Kit for Raspberry Pi

It's Raspberry Pi month at Linux Journal. Each week in May, Adafruit will be giving away a Pi-related prize to a lucky, randomly drawn LJ reader. Winners will be announced weekly.
Fill out the fields below to enter to win this week's prize-- a Prototyping Pi Plate Kit for Raspberry Pi.
Congratulations to our winners so far:
- 5-8-13, Pi Starter Pack: Jack Davis
- 5-15-13, Pi Model B 512MB RAM: Patrick Dunn
- Next winner announced on 5-21-13!
Free Webinar: Linux Backup and Recovery
Most companies incorporate backup procedures for critical data, which can be restored quickly if a loss occurs. However, fewer companies are prepared for catastrophic system failures, in which they lose all data, the entire operating system, applications, settings, patches and more, reducing their system(s) to “bare metal.” After all, before data can be restored to a system, there must be a system to restore it to.
In this one hour webinar, learn how to enhance your existing backup strategies for better disaster recovery preparedness using Storix System Backup Administrator (SBAdmin), a highly flexible bare-metal recovery solution for UNIX and Linux systems.




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