The Citadel Groupware Server
Setting up Kontact's Contacts (say that five times fast) is much the same as setting up KCalendar. Click the Contacts icon in the left-side pane. At the bottom of the middle column is a pane labeled Address Books. The right-click trick doesn't work here, so click the Add button instead. Select the same GroupDAV Server option, and fill in all the same data that you filled in for the KCalendar setup. Click the Refresh Folder List button, use the right-click-to-enable trick, and you're off to the races (Figure 8).
As with KCalendar, once you've set up your GroupDAV connector, you can now manage your contact data from either KDE or WebCit (Figure 9).
Tasks and the Journal are just plain-old work once KCalendar is set up. They don't require any of their own setup.
A lot of other clients support the GroupDAV protocol to varying degrees. Any of these can be used in place of Kontact, albeit likely with less functionality. For a complete list of clients and the status of their GroupDAV support, go to the GroupDAV site (www.groupdav.org/implementations.html).
GroupDAV isn't the only technology that can be used with Citadel. WebDAV and Webcal can be used with clients, such as Mozilla Sunbird and Evolution, to share calendars and schedule events. There is also a Microsoft Outlook connector in the works, but at the moment, Outlook can be used to access only POP/IMAP e-mail and IMAP folders. As time marches on, more and more clients that support GroupDAV and WebDAV come onto the scene. The Citadel FAQ contains a maintained list of clients and how to configure them.
Although a few groupware projects are underway that can give Microsoft Exchange a run for its money, we've found that Citadel is quite simply the easiest to install and maintain. The hardest part of a Citadel install is waiting for all the components to download. Citadel is under active development, and by the time this article prints, a new version may be out. The lead developer, Art Cancro, can be found in the Citadel support on the UNCENSORED! BBS forums (uncensored.citadel.org), along with other Citadel developers and experienced users.
Jon Watson (www.jonwatson.ca) is a Canadian GNU/Linux enthusiast who regularly contributes articles to the Linux community. When not writing, blogging and podcasting about free and open-source software, Jon frequently can be found in his office polishing his Linux+ certification, which impresses no one but himself.
Practical Task Scheduling Deployment
July 20, 2016 12:00 pm CDT
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.
Free to Linux Journal readers.Register Now!
- SUSE LLC's SUSE Manager
- My +1 Sword of Productivity
- Murat Yener and Onur Dundar's Expert Android Studio (Wrox)
- Managing Linux Using Puppet
- Non-Linux FOSS: Caffeine!
- Doing for User Space What We Did for Kernel Space
- SuperTuxKart 0.9.2 Released
- Google's SwiftShader Released
- Parsing an RSS News Feed with a Bash Script
- Rogue Wave Software's Zend Server
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