On-line Communities, Hold the Spam
People who are new to on-line communities are naturally concerned about all the spam they might get. What? Post your address publicly, for all the spammers to put on their CDs? It's true, you do start to get a lot of spam if you're active on publicly archived lists or run a web diary or blog. But don't be too afraid of spam. A world without spam would be a world without a lot of other things, too.
You could stop spam with one global uniform internet law, strictly enforced worldwide. But before any such law made any impact on spam, it would shut down a lot of stuff you like that your least favorite country convinced the global spam conference to ban.
You could change your address constantly and throw away anything sent to an old address. But there goes your chance to get mail from new people.
You could do what some companies and members of the US Congress are doing and turn the process of mailing you into a little dance with an automatic challenge that's impossible for spamware. But apply the Golden Rule for a minute and imagine if everyone you wanted to write to did that to you.
A total end to spam would be worse than spam. If you want the benefits of mail, you're going to have to put up with a little spam. But how little can you get away with? Gary Robinson is pushing the limits of automatic spam detection with some mathematical research on page 58.
Then, on page 52, Richie Hindle takes a look at how to set up Spambayes to start marking and filtering your spam right now. Spam-filtering developers are coming up with new math and new functionality all the time.
Sometimes I think Google works as well as it does because Doc Searls and his friends thoughtfully link to the good stuff on the Web, thereby pumping up the “Google Juice” of interesting pages. How do you become a commentator, tastemaker or diarist? Pick a blog package and start typing. Naturally Doc and I disagree on which software is best, but he's the man where blogs are concerned. See for yourself on page 66.
On page 72, Marilyn Davis explains that true democracy needs both elections and deliberation. Most systems offer one or the other, but not both. However, Marilyn's eVote system makes it possible for any user of a Mailman-based mailing list to start a wide variety of single-choice or multiple-choice polls. After the initial setup, there's no need for an administrator.
Every once in a while, face-to-face contact is a good idea, too. Fortunately for us Linux users, there are many ways to meet off-line and have been since the beginning. Check out the “Groups of Linux Users Everywhere” (GLUE) link on the Linux Journal home page, give your carpal tunnels a break, and meet some Linux people face-to-face too.
Don Marti is editor in chief of Linux Journal and usually finds the answer right after he asks a dumb question on a mailing list.
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!
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- SourceClear Open
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