Issue #140 / Jul 2012

KNOW-HOW: LinkChecker

Finding dead links with LinkChecker

LinkChecker helps you keep your site free of broken links.

SYSADMIN: Charly’s Column: Btrfs

The sys admin’s daily grind – Converting to Btrfs

Btrfs might not be complete, but conceptually, it combines so many useful filesystem functions that Charly couldn’t wait to play around with it.

SYSADMIN: Security Lessons: Hacking Hardware

Don’t forget your hardware

Now that your networks are secure and you’ve convinced your users to secure their passwords and software, it’s time to turn your attention to your hardware to keep it from being attacked.

KNOW-HOW: PHP-CLI

PHP for the command line

PHP is not just for websites. Command-line PHP scripting has been around for more than 10 years, which makes the language and its comprehensive libraries eminently suitable for the toolbox of any administrator who manages web servers.

SYSADMIN: oVirt

Open source data center management with Red Hat’s oVirt

The days when administrators were forced to manage virtual machines at the console are gone. Competitors of VMware and Citrix now offer equally sophisticated GUIs. One promising alternative is Red Hat’s oVirt – a free Java interface for Libvirt.

KNOW-HOW: Cmdfs

Building virtual filesystems with cmdfs

Cmdfs builds a filtered virtual filesystem based on a source directory tree. You can even integrate other programs to convert data on the fly.

KNOW-HOW: Ask Klaus!

Klaus Knopper answers your Linux questions

Klaus Knopper is the creator of Knoppix and co-founder of LinuxTag expo. He currently works as a teacher, programmer, and consultant. If you have a configuration problem, or if you just want to learn more about how Linux works, send your questions to: klaus@linux-magazine.com

PROGRAMMING: Perl: Travis CI

Headache-free continuous integration

A new service on travis-ci.org picks up GitHub projects, runs new code through test suites, and notifies the owners if the build fails. Its API enables Perl scripts to gather historical build data, including who-broke-the-build tabulations.

KNOW-HOW: Google Dart

Google’s JavaScript alternative, Dart

The Dart programming language is Google’s modern alternative to JavaScript. It will mainly run in browsers but can also be used at the command line and on servers as a replacement for PHP.

LINUXUSER: Command Line: Vim Outliner

Vim Outliner orders your thoughts

If you need to outline an essay, make a list, or write something highly structured like a CSS file for a website, then look no further than the command line, especially if you’re already comfortable with the Vim text editor.