Navigation

You are here: Home › MSCD › 2007

Archive | 2007

On The Media talks with WSJournalist about the One Laptop Per Child

By on December 2, 2007 in LAMP, Linux, OpenSource, Python, Technology

On NHPR this morning, the On The Media show had an episode on the One Laptop Per Child program. Here’s what they say on their web site:

In 2005 computer scientist Nicholas Negroponte announced his bold plan to build a laptop that costs $100 and deliver it to the world’s 150 million poorest schoolchildren in just 4 years. But the Wall Street Journal’s Steve Stecklow says competition from companies like Intel and Microsoft seems to have put that goal out of reach.

I’d be disappointed if the OLPC itself doesn’t succeed, but in some senses, it already has, spurring innovation (real innovation, not marketing slogans) in the low-power rugged laptop-form-factor marketplace. OLPC is radically innovative hardware where many of the other version one-oh products are the same old stuff in a smaller case. OLPC has screen that works in full sunlight and uses little to no power as an eBook. It has a mesh-based network capability that will allow ad-hoc networks over great distances in field conditions. Every aspect of the design was considered. These are elegantly engineered machines. The software is as innovative as the hardware, with a simplified UI that allows and encourages exploration and collaboration. I’ve contributed to the project, and I encourage you to do so.

Updating WordPress again: permalinks

By on November 30, 2007 in Technology

This morning, I updated the blog to use permalinks (the long URLs that should permanently link to a post) to change the format from http://www.tedroche.com/blog/?p=1234 to a newer format that includes the date and a bit of the post title, like: http://www.tedroche.com/blog/2007/11/22/recommendations-for-foss-podcatcher/. This lets you see both the date of the post and title in the link, and it also is more digestable by the search engines. Rather than seeing one page named blog/ with a parameter of P that changes all the time, the search engines now see that there are twenty-eight hundred pages in that directory, each with its own name. We’ll see if it makes any difference…

Joi Ito’s Three years with ICANN

By on November 28, 2007 in Technology

Joi Ito has a lot of history in developing and supporting and running commercial businesses leading during the internet boom and, like many of us, suspected that “it was all ICANN’s fault,” and that they should get out of the way. Unlike most of us, Joi had the opportunity to do something about it, as a member of ICANN and in his post Three years with ICANN, he learns that change might not be as simple nor easy as many of us think:

With all of its tumultuous history and bumps and warts, ICANN, in my opinion, is the best way that we can manage names and numbers on the Internet and any new thing to try to do what it does would be less fair and probably wouldn’t work.

Thanks for trying, Joi, and thanks for letting us know.

Recommendations for FOSS podcatcher?

By on November 22, 2007 in Home Page, Linux, OpenSource, Python, Technology

I listen to audiocasts (I don’t have a *pod, and don’t agree with the brand implications. Since I listen on my ThinkPad, they’re PadCasts for me. Let’s say “audiocast” or we could be really retro about it and refer to them as “audio recordings” since they’re neither cast nor podded.) while working out and go through quite a few. The Conversations Network has been a great source for these: IT Conversations in particular. Phil Windley’s Technometria is one I try to catch each weekly episode. Other features, like David Heinemeier Hansson’s keynote at the 2007 RailsConf or Tim’ O’Reilly’s keynote as OSCON are other favorites. There’s lots of other good stuff on Coversations Network, so much so that I’ve contributed to the network, a non-profit 501(c)(3) organization.

But there are other, far smaller operations. I met Peter Nikolaidis through the Dartmouth Lake Sunapee Linux User Group, and he does an audiocast called “Fresh Ubuntu” with a fellow from the west coast named Harlem, a man with a voice for radio. An interesting show with contributions from many others, too, focused on Ubuntu, but ranging over many of the topics involving Open Source.

I like to keep up with all of these audiocasts (and would welcome more recommendations from others!), but it involves manually visiting the web site, checking to figure out if I’ve heard the audiocast already, and downloading it. I’m looking for an automated way of doing this.

I was (and still am!) a regular subscriber to Dave Winer’s Scripting News, and listened to his first audio enclosure (imagine that!) in his RSS feed, accessible directly through the Radio Userland built in feed reader. Since then, I’ve changed hardware a few times, operating systems at least twice, and feed reader software more times than I can recall. I’m looking for an application I can run from my Linux desktop that will regularly check the RSS feeds put out by the audicasting sites and download the new audiocasts of interests. Bonus points if the software is under a FOSS license, +1 for efficient and frugal resource use, cool interfaces, etc.

One recommendation off the Conversations Network is labeled iPodder, but points to JuiceReceiver, which doesn’t “yet” have a Linux port, despite being written in Python. It seems like there are close relatives to this code in CastPodder and IcePodder, but it’s not clear to me which of any of these projects is alive, well and legitimate. It appears to me that IcePodder has roots in the others, with directories still named iPodder (likely renamed due to near trademark infringement of a well-known player?) and a CastPodder manual buried in the download, dated 2005. (Here’s a clue: IcePodder’s About page says “IcePodder is a podcatcher (RSS client) for Linux conceived as a replacement for CastPodder. ” So my guess is that iPodder begat JuiceReceiver begat CastPodder begat IcePodder. Whether or not I’m on the “right” branch is something that a little more research ought to bring to light. (Update: a little Googling confirms the theory, and it appears to be pretty amicable.)

IcePodder was an easy install: download, unpackage, review the README and INSTALL, review and run the install.sh script. Written in Python, using wxWidgets for UI, GPL. A little shaky in operation – I’ve crashed it once or twice, but I’m running the old “stable” release rather than the current code, so I should upgrade before passing judgement. The code needs some serious search-and-replace s/CastPodder/IcePodder/g but it looks pretty promising. Anyone else have recommendations?

UPDATE: gPodder also looks promising. Don’t let the version 0.10 fool you – apparantly, that’s the version after 0.9, according to the developers…

Retro-tagging a WordPress blog

By on November 18, 2007 in Home Page, LAMP, Linux, MySQL, OpenSource, PHP, Technology

I’ve got a WordPress blog with a couple thousand posts, upgraded several times, from a TWiki blog to a Radio Userland blog to WordPress and a couple of upgrades. And I’d like to add the new taggin features available in WordPress 2.3. Here’s what I’ve figured out from poking around: what used to be wp_category is now wp_terms and terms contains both categories and tags. The categories are hierarchical from a self-join using the group column to link back into the term’s term_id primary key. wp_terms in turn links into wp_term_taxonomy: that’s got a column named taxonomy that contains groups like ‘category’ and ‘link_tag’ and a parent column that self links into term_id, which I think is a duplication of what wp_terms is doing. There’s also a count field, meaning that we’re denormalizing the count of categories and tags, meaning if we hack at them, we’ll need to manually update this (see below). Finally, the posts are related to categories and tags using the table wp_term_relationships that’s a many-to-many link from the post’s primary key, object_id, to the term_taxonomy_id primary key of the wp_term_taxonomy table.

So, here’s the recipe to retrofit tags into some posts. I used phpMyAdmin as the web interface into the MySQL table that holds WordPress’ data. You can do the same via the mysql terminal interface or using other remote connectivity like ODBC or your choice of tools.

1. Create or update a tag in the wp_terms table. Note the term_id PK.
2. Insert the term_id and category of ‘post_tag’ into the wp_term_taxonomy table.
3. Create the linking records in wp_term_relationships with the following SQL. In this case, I’m tagging with “Ruby” any post that has “Ruby” in the title or post.

INSERT INTO wp_term_relationships
SELECT wpp.id object_id, `term_taxonomy_id`
FROM wp_posts wpp, `wp_term_taxonomy` wptt
JOIN wp_terms wpt ON wptt.term_id=wpt.term_id
WHERE wpt.name='Ruby'
AND wptt.taxonomy='post_tag'
AND (wpp.post_content LIKE '%Ruby%'
OR wpp.post_title LIKE '%Ruby%' )
ON DUPLICATE KEY UPDATE
wp_term_relationships.term_taxonomy_id=
wp_term_relationships.term_taxonomy_id

(The ON DUPLICATE code is just a quick hack to tell MySQL to ignore it if you’ve already tagged some posts Ruby by hand.)

4. Hack away. When you’re all done, you’ll want to fix the count in the table with the code below:

UPDATE wp_term_taxonomy wptt
SET wptt.count=
(SELECT count(*)
FROM wp_term_relationships wptr
WHERE wptr.term_taxonomy_id = wptt.term_taxonomy_id
GROUP BY term_taxonomy_id)

Fedora 8 Everything Spin Released! — Fedora Unity Project

By on November 15, 2007 in Linux, OpenSource, Technology

The Fedora Unity Project announces Fedora 8 Everything Spin Released!: “The Fedora Unity Project is proud to announce the release of new spin, the Everything Spin. Included in this spin are all the packages available at the time Fedora 8 was released.”

A neat feature of recent ( 7 & 8 ) Fedora releases is the ability to create your own derivative distributions based on the tools supplied with the package. This allows the LiveCD and LiveUSB features I mentioned earlier, and allows independent groups to create specialized disk images (“spins” in their inside chatter) to meet specific needs, in this case, a set of CDs for those who don’t have a DVD handy. I ran into this situation recently with a customer who had chosen to economize on his server specifications by cutting out a DVD that was likely to be used only a few times over the lifetime of the hardware. It’s cool that the Fedora build process has been made public and the tools to do this added to the distro itself.

Comment is free: Space cadets

By on November 8, 2007 in Personal

Dan Kennedy writes in Comment is free: Space cadets, “Is seeing a UFO any more crazy than believing God created the universe in six days? It is if you are running to be president of the United States.” Go, Dan!

I have seen things in the skies I could not identify. I’ve seen meteors and comets and planets and even satellites I could identify, but I’m not an expert in astronomics nor aeronautics, so I have seen objects that may have been flying that I could not identify. I haven’t seen Elvis, and I haven’t communicated with little green men. That’s crazy talk. Which is crazier: Charles Darwin or X-Files? I’ve got that all sorted out, thanks.

Red Hat Magazine | I am Fedora, and so can you!

By on November 8, 2007 in Linux, OpenSource, Technology

Max Spevack, the benevolent dictator in charge of herding cats for the Fedora project, doesn’t announce the official release of Fedora 8 today in his posting, I am Fedora, and so can you! in Red Hat Magazine, but it’s out there. (His post is actually a great HOWTO on running Fedora off a USB memory stick, neat trick that that is!) Find the bittorrents and conventional downloads at http://fedoraproject.org/get-fedora and hop aboard. I run Fedora, and so can you!

Slide presentations: S5 and Google Present

By on November 6, 2007 in CSS, Home Page, Technology

I’ve mentioned and endorsed S5 (the Simple Standards-based Slide Show System, if memory serves) before, as a great way to write a presentation, and at the same time generate slides, handouts and the HTML to post it to the internet, all as the same set of documents. Creating a set of slides in S5 means I don’t have to worry if the machine at the presentation site has a ‘viewer’ as long as they can read standard XHTML and run Javascript. I can post it directly to my web site archive of shows, and carry it on a USB tab in case my laptop decides not to work.

Google has recently announced Google Present as part of their free Google Apps. It’s a pretty cool AJAXy interface familiar to anyone who’s worked with one the many slide programs. One killer feature is that it will import PowerPoint files, even some of the ugly old ones. You can publish them online as I’ve done here with a Y2K presentation from the dFPUG Conference. The import came over with pretty good fidelity, far better than the original HTML export that PowerPoint 9 attempted. So far, so good. But what happens if you’re planning on doing a presentation and can’t trust the internet will be available (important safety tip here, folks: you can’t trust the internet to be available. Murphy has a special place in his heart for presentations)? Even better news: Google Apps also lets you download a copy of this. It comes down as a ZIP file, handy to throw on a USB tab (you should save an unzipped copy, too) and put in a different bag than the one that holds your laptop. It unZIPs to an HTML file and a couple folders holding the CSS, JavaScript, images and supporting files to run the show and runs from a local disk. You could upload this version to your web site, too, and look what you get: a slick slideshow with slides, fonts and graphics that scale to size of the screen (essential when you discover the projector can only handle 800×600!) and redraw pretty snappily.

Finally, S5 has a competitor! This one looks promising.

Older posts Newer posts

Powered by WordPress. Designed by Woo Themes

This work by Ted Roche is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 United States.