autossh vs TCP resetter //at 00:08 //by abe

LUG-Camp 2007 in Interlaken is nearly over, and I’m reading my mail as usual using ssh, screen and mutt on the server. But the ssh connection resets every few minutes. According to the LUSC people (who are running the gateway) some script kiddie is running a TCP resetter somewhere in the network.

I remembered that I read about autossh in the Debian package list once a while and that it sounded cool but I had no use for it yet. Until now.

I’m writing this over the same crashing ssh connection and I’m typing without taking big notice of the quite often occurring connection resets:

autossh noone.org -t 'screen -rd'

It just works. :-)

Traveling plans for the first half of 2009 //at 16:12 //by abe

Since the time between the years is traditionally family time for me, I never were at the Chaos Communication Congress. So I wasn’t at 25C3 either. All the more I look forward to HAR2009 this summer (13th to 16th of August near Vierhouten in the Netherlands), but also because, for the last three years I always have been in the Netherlands for one week in summer, sailing with friends on the IJsselmeer.

But before HAR2009, there will be a bunch of other events to visit and people to meet in real life:

• I’m looking forward to see @evan, @cemb and many other identicatis in real life at Microblogging Conference ‘09 in Hamburg next week on Friday and Saturday (23rd and 24th of January). Will go there by train.
• Two weeks later there will be FOSDEM in Brussels (7th and 8th of February) where I hopefully will meet Savago from the Amora Project and many other friends from the FOSS community. Will go there either by train or car.
• On 14th and 15th of March, the Chemnitzer Linux-Tage take place. I’ve submitted two talks for beginners and will be there with the usual suspects from Symlink (Venty, dino and P2501 so far). We’ll go there by train.
• Luckily not overlapping with the VCFe this year is the SPEZI at Germersheim near Karlsruhe which takes place on 25th and 26th of April. I plan to go there, maybe by train and Brompton, but nothing yet sure.
• The, one week later over the long weekend around the 1st of May there will be Vintage Computer Festival Europe (VCFe) 10.0 at Munich featuring Raffzahn. Will be there with the usual suspects. I’ll maybe prepare an exhibition (“Debian on dead hardware”, i.e. PowerPC, Sparc, Alpha, etc. or so) or a talk, but not yet sure. Will go there by (vintage) car as usual.

Then there will be the big summer holidays driving around in the middle of Europe with the 2CV and taking part in most likely:

• Sailing with friends from 31st of July to 7th of August,
• HAR2009 one weekend later, and
• FrOSCon at St. Augustin near Bonn another weekend later.

This also means that I’ll probably miss:

• DebConf 9 at Extremadura (Spain) from 16th to 30th of July (can’t get so fast from Spain to neither the Czech Republic nor the Netherlands with the 2CV),
• The 18th International 2CV Meeting at Velebudice, Czech Republic from 28th of July to 2nd of August (overlaps with sailing)-:, and
• Bünzli 18 from 14th to 16th of August at Winterthur, Switzerland (overlaps with HAR2009).

… at least unless one of the other events I plan to visit doesn’t take place as expected or my plans change heavily.

P.S.: Anyone thinks this amount of events justifies a Dopplr account? ;-) Or is there somewhere a free online service similar to Dopplr, but runs software under the GNU Affero General Public License like e.g. identi.ca and many other Laconica instances do for microblogging?

MicroClient Sr. //at 01:16 //by abe

About a year ago, I bought a Norhtec MicroClient Jr., a complete 200 MHz MMX-compatible SoC (“Vortex86”) PC so small that it fits into your hand or onto VESA mountings. Althought thought as thin client, the machine has 128 MB RAM and runs Debian from either netboot, USB stick, CF card or 2.5” harddisk without problems and not even that slow.

Later last year, we needed more MicroClient Jrs. at work and since the MicroClient JrSX had a 300 MHz 486SX-compatible SoC processor (“Vortex86SX”) from MSTi and 128 MB DDR RAM instead of SD RAM, we expected them at least in the same performance range and bought a few for ETH and I also bought one for myself. Well, they were about three times slower, since the FPU is missing, not all programs from Debian Etch work fine, e.g. X doesn’t work without patching and recompiling (with Sid, X works, but not the kernel anymore – Update, 26-Jul-2008: See #454776 for a solution for this problem)…

BTW: I had both machines with me at FOSDEM ‘08 at the Debian booth and the MMX-compatible machine also at Chemnitzer Linux-Tage (CLT) at the Symlink booth and in Kurt Gramlich’s talk about ecological computers. So if you saw them there, just imagine the same case, with a twice to three times faster CPU and four times the amount of RAM, but with roughly the same carbon foot-print!

For our thin client purposes at work we now use ALIX boards from PC Engines (Mini-ITX format) with 500 MHz AMD Geode processors. They’re much faster than the MicroClient Jr. and need even less power.

Today, while surfing around on some Mini-ITX shops, I found some computer in obviously MicroClient Jr. case, but with 500 MHz VIA Eden processor and 512 MB of RAM. I first couldn’t believe it. They are selling it as eTC-2500. Since eTC-2300 was one of the brandings of the MicroClient Jr. which is called eBox-2300 officially by the manufacturer DM&P, I searched for eBox-2500, but didn’t find anything useful. Then I looked at the manufacturer’s product page at CompactPC.com.tw and found the eBox-4300 — so it’s really true, they managed to fit a board with 500 MHz VIA processor and half a Gig of RAM into the already fscking small space inside the MicroClient Jr. case, and even without needing more power: Still 15W from the power adaptor. Next stop was Norhtec’s Website. And yes, they also have a new MicroClient product: The MicroClient Sr.. I really need to have one of those for my MicroClient collection! ;-)

Google Open Source Jam and Webtuesday Hackday //at 22:45 //by abe

I was at two geek events in Zurich this week: At the Google Open Source Jam Zurich on Thursday evening and at the first Webtuesday Hackday on Saturday.

Somehow I expected both events to be quite similar, but they weren’t.

Google Open Source Jam

When I read “Jam” or “Jam Session” I think of Jazz musicians spontaneously playing together. So for me “Open Source Jam” sounded like a hack session where some spontaneous coding is done. But there was no spontaneous collaboration at Open Source Jam at all. It’s just (more or less spontaneous) talks about different topics and chatting. So I was quite disappointed from that event.

There were though quite a lot of people I knew from e.g. Webtuesday, Chaostreff or Debian. I even met some people I just knew from IRC until then.

Half of the talks were sole propaganda talks though, e.g. for Webtuesday Hackday, OpenExpo and Soaring as a geek sport. Not really wrongly placed talks, but not what I expected in talks at Open Source Jam.

The few rooms and floors I saw reminded me very much to IKEA Children’s Paradies, just even more motley. Though it felt all sterile and wasn’t by far as cool as I expected after what I read elsewhere of Google offices.

I also think that several of the Google employees showed some contrived friendlyness, and questions I asked e.g. why I have to give them my e-mail address and employer’s name (what do unemployed or self-employed people do?) got answered with answers I do not really believe – like “for security”. A leopard doesn’t change its spots. A data squid probably neither, even not at events labeled with OSS and said to be for the community.

I suspect that finding new employees is one of the reasons behind such events at Google. But after my first visit at one of their locations, this company still makes me feel uncomfortable. And I’m even more sure than before that I wouldn’t want to work there.

Not sure if I’ll attend the Google Open Source Jam a second time.

Webtuesday Hackday

Webtuesday Hackday also was not as I expected, but still more close to my expectations: the Webtuesday crowd gathers for hacking instead of having long talks. :-)

There were surprisingly many people from outside Zurich, from Munich and Belgium, from Lake Constance and Lausaunne – not only the usual suspects (who were there anyway ;-).

The event took place at Liip’s new office. They still look a little bit empty and steril, but all the toys (mini rugby balls, Wii, plush figures on floor lamps) and people around made them very alive. And they had very cool lamps in the form of their company logo in the office. They sure have a good interior designer. :-)

Although most participants found time to do some hacking, many found less time than they expected so we hope that we can glue the talks a little bit more together in regards of timing to cause less interruptions of the hacking.

The food was also better at Hackday, too, but mostly because we ate outside. ;-) For lunch we were at Lily’s Stomach Supply at Langstrasse (very recommendable!) and in 6he evening we were at Pizzeria Grottino 79 near Helvetiaplatz. Had a Pizza Vesuvio with Gruyère cheese there.

Hackday also had a surprise for me: The IRC channel at Hackday was but when I entered the channel there were someone in I didn’t expect there: tklauser aka Tobias Klauser aka tuxedo. Even more surprising, he read about my project idea for Hackday – a semantic feed cache proxy – and liked it, so he decided to come over to Zurich and join the project.

We didn’t came that far until Tobias had to leave again, but the progamming language and partially also libraries had been nailed: Ruby and it’s WEBrick framework. After the Hackday I worked on it a few more hours and it now already saves feeds to a cache. The Mercurial repository is at http://noone.org/hg/sfc-proxy.

There were several reasons which spoke for using Ruby instead of Perl (my favourite progamming language and the one I’m most experienced in): Ruby brings HTTP and RSS support already in it’s standard classes and Tobias is more experienced in Ruby than Perl. I started to learn Ruby a few years ago to look beyond my own nose and to get my hands dirty on some object-oriented and nice programming language, but I hadn’t found an appropriate project until now, so this was one more reason to not do it in Perl.

I also worked on my Debian package of Conkeror during Hackday. It’s already usable and I now use Conkeror as primary web browser on my EeePC, but e.g. the man page is still missing. As soon as I have the minimum in necessary documentation ready I’ll let it upload to Debian Experimental (since its dependency XULRunner 1.9 is also only in Debian Experimental yet). The Mercurial repository for the Debian packaging of Conkeror is at http://noone.org/hg/conkeror/debian

Those who were still at Hackday in the evening decided that the Webtuesday Hackday should become a regular institution and should take place approximately every two months, but stay a one day event (for now). I already look forward to the next Webtuesday Hackday.

No more NDA for events hosted at Google Zurich? //at 19:14 //by abe

I first heard about the Open Source Jam Zurich somewhere at BlogCampSwitzerland 2.0 (which was more a TechCrunch7 than a BlogCamp — why did the organisators call it BlogCamp?) and subscribed to its Google Group.

At Linuxday.at, hansmi (who seems to be assimilated bywork for Google) gave me a flyer about Open Source Jam Zurich. And while reading it, I noticed that it will be held at Google’s Zurich office. Remembering the need for early registration for one of the recent Webtuesdays because of signing an NDA being necessary to get into Google’s office, I asked him, if I need to sign an NDA if I want to take part at Open Source Jam Zurich. He acknowledge it and so I returned the flyer and forgot about the Open Source Jam Zurich.

Today Gürkan told me, he was at Open Source Jam Zurich at Google and he didn’t need to sign any NDA. He also told me that he knows other people which didn’t take part either because of the expected the need to sign an NDA. I was puzzled.

Did Google really started to realize that “Open Source” and “Free Software” doesn’t fit together with “Non-Disclosure Agreements”?

I hope so, because this would make it possible to come to all future Webtuesdays — my favourite local geek event — and not only to those not taking place at Google.

Is ikiwiki a Website Meta Language killer? //at 03:03 //by abe

On this year’s Chemitzer Linux-Tage (CLT, engl. “Chemnitz Linux Days’) I attended a few talks of which especially formorer’s ikiwiki talk was very interesting.

I attended his talk since I found out that ikiwiki is command line wiki compiler in contrary to the thousands of solely web based wikis out there. As a big fan of statically generated content this idea sounded very interesting to me.

But just having a short look at ikiwiki’s web page didn’t help to get started and it seemed as if I had not the right idea of how ikiwiki works to get started. So formorer’s talk seemed to be a good possibility to get an idea of how ikiwiki works without much effort.

During the talk I noticed that ikiwiki can many things I do with the Website Meta Language (WML), but can do some more things WML can’t do out of the box:

1. It’s not only a framework to generate web pages, it’s more like a content management system (CMS).
2. Versioning is intergal part of ikiwiki without reinventing the wheel: It works out of the box with — beyond others — Subversion, Git and Mercurical (Hg).

And when formorer showed that even Tobi Oetiker uses ikiwiki, I noticed that ikiwiki probably could be a WML killer, since I knew Tobi as a WML fan. And ikiwiki looks very appealing for the WML fan inside me, too…

OTOH: Intergrating WML as a backend to ikiwiki could be an interesting idea, though.

Hearing what kind of input files ikiwiki can process, I also got the idea of using hnb (Hierachical Notebook) files as input for ikiwiki. hnb files are already XML and so a conversion to XHTML shouldn’t be that hard.

But when searching the web for “ikiwiki hnb” I found the blog postings of a few people switching away from hnb, e.g. to vimoutliner. Since I’m an Emacs addict and don’t like vim very much (if I use a vi, I use nvi or elvis), I searched for “emacs hnb” and indeed found someone who switched from hnb to org-mode – of which I never heard before. Unfortunately org-mode doesn’t seem to be in Debian (Update 00:23: Yeah, yeah, I now know it’s included in emacs22, but emacs22 hasn’t made it into kfreebsd-i386 yet, so I didn’t notice. See the comments. :-) but I’ll play around with it a little bit. Unfortunately a first test wasn’t that promising. But we’ll see.

Now playing: Men at Work — Down Under

Following Bleeding Edge Software and still using Debian Stable //at 23:04 //by abe

Many Linux fans know that Debian Stable usually already lost the “b” when it’s being released. ;-) What seems not so well known (especially not by some DesktopBSD Marketing guy at last year’s LinuxDay.at :-) is that there is really a lot of people who really like this “stale” software collection — because it’s rock solid — especially compared to the ports in FreeBSD or DesktopBSD *evilgrin* which unnecessarily follow every new feature upstream introduces. This is really annoying in a server environment where you want as less changes as possible when updates are necessary due to security issues. My personal favourites here are Samba and CUPS. *grmpf*

Although I belong to those people who run Debian Stable even on brand-new hardware, I sometimes have to use the newest beta or alpha versions of some software to get it even only running. And doing so is fun but feels strange somehow, though. Currently I follow the pre-releases of three software makers quite close, due to a new laptop:

At the beginning of last semester I bought a brand-new Lenovo ThinkPad T61 (2,2 GHz Intel Core2 Duo T7500, 4 GB RAM, 160 GB HD, 1440x900 14” Widescreen) without preinstalled operating system (possible thanks to the ETHZ Neptun Project) and installed — of course — 64-bit Debian Stable on it.

While the Debian Installer from Etch worked fine even on such new hardware, not all features worked out of the box because some components were just too new.

So the first thing I did was installing 2.6.22 from Backports.org, quickly moving farther to vanilla 2.6.23. Nearly everything I needed worked except the wireless network card. It needs the iwlwifi driver which is officially in the Linux kernel starting at the upcoming 2.6.24 (said to be released during the next few days). So I run 2.6.24 pre-releases on the laptop since the first release candidate, always eagerly waiting for either the next RC or the final release. (And 2.6.24 looks impressively stable to me — even since the early release candidates. :-)

I even got the fingerprint reader working for login and sudo (but not xscreensaver) using libthinkfinger backported to Etch from Debian Experimental. I’m just not sure if this is a good idea since the back of the screen already has enough of my fingerprints on it. ;-)

The next software of which I’m currently running an alpha version is 64-bit Opera 9.50 (aka Kestrel, available at snapshot.opera.com) because no earlier Opera version is available for 64-bit Linuxes. Here I had different experiences: The builds from October and November were already quite stable, but since December it crashes usually several times a day.

At work I also run the 64-bit Opera on my workstation, but stalled updating it when I noticed that it became so unstable. So my Opera at work has currently an uptime of nearly four weeks — and would have probably more if I hadn’t rebooted my workstation in Mid-December.

Somehow this hunting for new versions and eagerly waiting for every new (pre-)release makes me really fidgety sometimes. And my understanding for people doing this for there whole userland or even operating system has grown, but I still prefer to have stale but stable software on all my productive machines, even on my laptop — just with some few and handpicked excpetions.

The third but less thrilling thing I’m following are nVidia drivers for X. Since the free nv driver of X.org doesn’t support (and not only just doesn’t know) my graphics card yet and nouveau isn’t ready yet, I run the binary only and closed source driver from nVidia, waiting for that one release which supports Xen since I really would like to run a Xen guest with Debian Unstable for testing purposes and package building on my laptop. Until then I have to content myself with the much more unwieldy QEMU respectively KVM.

Anyway, I’m very happy with the T61 and Debian Stable and can easily connive at the few not (yet) perfect issues like missing Xen support by nVidia, broken ad-hoc mode in the wireless card, no internal card-reader (as announced in the Neptun specifications) and no native serial port.

Some useful links regarding the subject of this post:

• Linux Weather Forecast
• Opera Desktop Team
• Nouveau: Open Source 3D acceleration for nVidia cards
• ThinkWiki

Now playing: Jean Michel Jarre — Rendez-vous à Paris