Want to send messages to all the browsers connected to your site? The pub-sub paradigm, run through Web sockets, might be just the solution.

This excerpt is from the book, 'DevOps Troubleshooting: Linux Server Best Practices' by Kyle Rankin, published by Pearson/Addison-Wesley Professional, ISBN 0321832043, Nov 2012, Copyright 2013 Pearson Education, Inc.

How many times have you heard, "there's an app for that"? But sometimes, there actually isn't "an app for that", or the apps that do exist don't meet your needs. As Linux users, we tend to like to scratch our own itches, and if that means we write some code to do it, so be it.

One of the great new things about Drupal 7 is that it's now easier to customize your site content. In Drupal 6, you typically had to use the CCK (Content Construction Kit) module for fine-grained control in customizing content, but that has been folded into core for Drupal 7. Drupal 7 is now a true content management framework (CMF).

Few jargonistic terms have annoyed me as much as, "The Cloud." When the term was first coined, its meaning was ambiguous at best. For some companies, it meant shared web hosting (but with a cooler sounding name). For others it was simply, "let us host your servers in our datacenter, which we now refer to as a cloud."

I'm the sort of person who doesn't like to install Java. I actually don't like to install Flash either, but it's still tough to survive browsing the Internet without Flash installed. There is one program that makes me break my own rules, however, and that's Crashplan.

Create applications inside the Chrome browser with standard Web technologies: HTML, CSS and JavaScript.

Besides representing open source organizations like the Linux Foundation and scores of standards organizations, attorney and open source advocate Andy Updegrove is also a novelist.

I'm the author of the article "Introducing Dart, the New Web Language from Google" in the March 2013 issue. I wrote the article in late December and submitted the article in early January of this year. During the time I was writing it, I was using Dart M2 (version 0.2.9.9). I made sure to have my colleagues check over my code and worked to make sure that everything was perfect!

Poor telnet, it used to be the cool kid on the block. It was the program all sysadmins turned to when they needed to connect to a remote server. Telnet just wasn't that good at keeping a secret—all communication went over plain text—so administrators started switching to SSH for encrypted remote shell sessions.