Search Results: "tar"

17 February 2007

Alexander Schmehl: Is there a mail client which doesn't suck?

Until recently I was a quite happy user of the mail client mutt. I used to receive mails on my own mail server, check them for spam, and at home I used fetchmail to pull them all down, where they where sorted in different folders via procmail. Not very elegant, but working. Sometime I read the mails directly on my server, which wasn't as comfortable as possible, since the mails where all in one big pile. So I needed to change something to sort them on the server and sync them home. Not a big problem, you might think? Well... Sorting mails on my server wasn't a big problem (beside the fact that I needed to tweak my procmailrc a bit; I used real folders at home, but dovecot wants to have the folder hierarchy separated by dots in the names of the physical folders). First I tried to use mbsync, from the isync package. First problem was, that mbsync doesn't like subfolders (which I didn't found out via the documentation, but from a friend using it, too). So I needed to rename all my folders (nearly 100) again to something mbsync would understand. I worked quite well and did, what I wanted to do: Syncing mails from my home computer to my mail server and the other way around. It was nearly perfect, and I would be able to read mails even without net connection. Perfect for boring train rides! But after only one week something went wrong. mbsync started to segfault. Beside receiving new mails and doing the usual stuff (reading them, moving them to other folders) I changed nothing. But it kept on segfaulting; I didn't found out why (see #411120). Obviously I need a working mail setup, so I searched something new... like my old mutt! Why not use mutt to access the imap server directly? Okay, I wouldn't be able to read mails while traveling around in a train... but hopefully mbsync would be fixed in the meantime. But using mutt with imap sucks, too. While it is perfectly possible to read my mails, it seems impossible for mutt to check, which folder has new mails. No, that won't work. Thanks, I'll have a look at something else... Perhaps I should try something new? My girlfriend likes thunderbird icedove. Nice user interface... no problem accessing my imap server... and it has some kind of offline mode. But... NO! It seems it's impossible to make system wide folder settings! Like... displaying new mails on the top instead of the bottom... or using the thread view... or setting this damn "check this folder for new messages" flag, so the folder will be checked for new mails. Damn! I won't click through every single one of my nearly 100 mail folders to set the settings I want. Sigh... isn't there a mail setup which doesn't suck? It isn't that complicate: I want to use gpg, I want to have threading, I want my folders to be displayed properly (preferably in some kind of tree), I want to see which folders have new mails and it shouldn't be that huge (which kicks out kmail and gnus); bonus points if I can continue using my favourite editor and for some kind of offline mode. Update: icedoves threading sucks, too. It seems to be based on the subject of the mails, not mail headers. Leading to quite iritating views on a mailfolder containing a lot of auto generated messages with similar subject. PS: No, I haven't tried offlineimap, yet. Some people warned me to not use it. Well... perhaps I'll give it a try.

16 February 2007

MJ Ray: SPI: eVoting and other links

Elections, for Profit
Basic problems in the e-voting systems of Denver, Colorado, USA
German people: do you care about democracy and your right to vote? Uwe Hermann
I wonder what happened to this petition?
The Open Rights Group : Taking the lid off e-voting
So, given that e-voting is known buggy and considered harmful, what does the UK do? Follows the other sheep into the abyss, looking ahead as little as possible. Here's ORG's explanation of the situation.
Open Voting Foundation @ SPI
Open Voting Foundation sounds like it should be a project to stop the spread of the e-voting problem, but it isn't.
European Commission endorses open source - ZDNet UK
A lengthy EC report (is there any sort besides lengthy?) summarises the benefits of free software. I think one important way that more partner organisations can help SPI-like groups is by helping to inform about this sort of local development.
LWN: The end of the Fedora Foundation
When you see that Red Hat can't/won't start a foundation around its distributions, you realise what an amazing thing SPI is.
2007-02-16
Agenda for this evening's board meeting. I seem to be having difficulty staying connected.

Christian Perrier: And the target moves again: twiki

So, today, as I was about to NMU atokx2, the twiki maintainer decided it would be time to slightly rewrite his debconf templates. And, therefore, we end up with two fuzzy strings (and still bad templates for that package anyway). So, the target moves again away from me and I will have to deal with a round of translation updates, templates rewrite and probably some more explanations with the maintainer. I don't doubt this will suceed but, of course, in the meantime, I can bet that another maintainer will have the weird idea to change his/her debconf stuff. It's really time for me to buy a real hard cluebat...:-) Meanwhile, I'll try hunting a few packages that are still not using po-debconf (except of course the desperate case of qmail).

15 February 2007

Russell Coker: a good dog for uplifting

The Norwegian Puffin Dog has six toes that are all fully formed. This has to be a good start for the uplift process.

The requirements for uplift are intelligence, speech, and the ability to use tools (dexterity in fingers). It seems that the Puffin Dog has a finger advantage over other breeds. Also the Lundehund has the ability to spread it's front legs out horizontally and to turn it's head around to face backwards, both these abilities significantly increase it's potential ability at using tools (uplifted dogs could use their mouths to manipulate tools as well as their hands).

So we need to find a breed that has good vocal capabilities and a breed that is intelligent and produce a cross-breed that has the best of all three!

Lundehund Syndrome sounds nasty, and would be almost impossible to breed out of pure bred dogs, but when producing a cross-breed it should be easy enough to do. Given that we don't care whether the uplifted dogs look like Lundehund's, have the same number of teeth, or are identifiable with that breed in any way other than dexterity it should be easy to breed out the genetic damage.

Pete Nuttall: Free Tshirt

Ages ago, I entered the IBM Mainframe contest. As with many things, I never got as far as I would like due to work presure, but today I got a free t-shirt and Certificate from them. Thanks!. As a random aside, why have tech companies started giving out white t-shirts? I can't really wash them, since I don't have that much white clothing. There is also the problem that the other one I have is from google and has "I'm feeling lucky" on the back, which I regard as the same as giving God the finger...

Erich Schubert: False sense of security

This post of ubuntu-tutorials.com (via Planet Ubuntu) suggests to run sshd on a different port than 22. That does not increase security. Serious attackers aren't fooled by just changing the port; if someone has an SSH remote exploit we're all in deep trouble anyway (but that code is heavily audited, you bet!), and it's trivial to scan on other ports if a system is detected as being Unix and not having SSH on port 22. If you want to really increase security, you can If your goal actually is to get rid of those annoying (but non-threatening, if you don't have trivial passwords) messages in your log files (you DO read your log files, don't you?) - consider using the iptables RECENT match to stop them early. At the university, we have a RECENT match filter at the border firewall. It stops SSH scanners early on, giving them 5 tries total for the whole network (and they usually give up after that, not retrying when the recent match has expired). For some details on how to use the RECENT match for filtering SSH connections, read this earlier blog post on iptables SSH protection. Use the INPUT chain to filter localhost. For an example how to do a two-hop SSH connection, read this blog post. Just replace his OpenWRT router with a tighly secured SELinux gateway system. Another (without nc) is to use the LocalForward option of ssh. Just forward some local port through one ssh connection to the final machine, then do a second ssh connection over this. The gateway host could easily be restricted to only allow outgoing connections to port 22 in the fenced off network. So basically, by NOT using a different port than 22 for SSH, you can increase security (by filtering port 22 specially, knowing that it's SSH). If you start putting your SSH daemons on different ports, you're actually making firewalling much harder. Also note that in some networks, bandwidth policies are used for different ports. The SSH port usually is not limited; arbitrary ports are (since it might be a filesharing application using them). Another reason to stick to the standard ports, so you don't get punished by your network administrators!

Thijs Kinkhorst: AB+

Yesterday I've made my 38th blood donation. I can heartily recommend it to (almost) everyone. Especially if you are a "simple" full blood donor, it will take at most half an hour, a couple of times a year, at a moment you choose within a two-week interval. Oh, it doesn't really hurt and you get free coffee and sandwiches. If you're in the Netherlands, you can register on line. I think it's an easy way to do some good for society. I'm not a full blood but a plasma donor myself. I have the most rare blood type (AB), which means I can receive all other types but my blood can only be given to the 3% of the population that also has AB. That makes it not quite useful for donation, but it is useful to make medicine out of. During the donation the blood is filtered and only the plasma is kept, all other parts are pumped back into my circulation. This allows for a larger volume of plasma to be donated at a time, but has as a drawback that it needs an appointment and takes longer. The most commonly asked question is whether you get paid. You're not. The reasoning is that this could motivate people to be a bit too positive about their health situation when they need money, and thus could hold back relevant risk information. The selection procedure depends on a reduction of chances. This also leads to homosexuals being completely excluded from donations. While sound from a purely statistical reasoning, it is debatable whether this is fair on an individual level.

Andrew Stribblehill: Words and punctuation

I don’t generally post whilst annoyed — which could explain why my postings are generally of a whimsical nature and (hint hint) don’t get enough comments. However, this post is different. I am angry that people see fit to write things for public consumption or wide dissemination when they obviously have little regard for the language in which they are writing. As a general principle, if you don’t know the right spelling, punctuation or grammar, ask someone who does know! People who don’t know where apostrophes belong: this means you! Another hint: the word “momentary” does not mean, “in a moment”. It means “for a moment”. Big difference. If “the power will resume momentarily”, I’m going to unplug my delicate electronics. If it will resume shortly I will cheer and lo! there will be great rejoicing.

Jordi Mallach: Tunisia

Last month, Bel n and I managed to secure our trip to Tunisia on the very last moment. So, planning trips on the very last moment isn't nothing new around this place, but we made a big effort to take things to the limit. I can't remember why exactly, but on January 31 we were *so* close to fucking everything up before it started, when we packed our stuff just a pair of hours before having to leave to the train station. My luggage was prepared in a rush, so while I think I took everything I thought I'd need, I didn't really select my clothes too much. The idea was to have our suitcases mostly empty to bring back stuff from the markets: smoking cachimbas, lamps, leather stuff, etc. At that time I didn't know that would end up being a great strategy. Anyway, like 9 minutes before the train's departure we were stuck in Nuevo Centro without a taxi and at that point I really had lost hope about being on time. For some reason, there were no taxis in the area, when it's normally a place where there's tons of them. Suddenly one appeared, we rushed in and I asked the taxi driver to please fly to the station. Happily, we got an incredible green wave around the avenues, he drove us at like 80 Km/h and we even had to wait for a few minutes at the station. In Barcelona, we prepared our small New Year's Eve dinner with my cousin Laia and Marc, and while the plan was to go to sleep pretty early to be in good shape to go to the airport next morning, the bottles of wine and cava emptied quite fast, and around 4:30 we were quite drunk when we decided it was enough. When some annoying sound woke us up next morning, it was really late, so we again rushed out to the empty streets of Barcelona, sneaked into a regional train, without knowing it was the only way to get in time in El Prat airport, and after some initial confusion trying to find the travel's agency desk in the wrong terminal, we managed to check into our flight, being the very last to do so. With all the rush, I couldn't get some clothes from my suitcase transfered into my hand luggage, which I really wanted to do after my nice lost luggage experience during Debconf 5 in Helsinki. Anyway, chances are small that your luggage gets lost, right? But of course, Murphy is always vigilant, and this was a great opportunity to fuck me up. After a short but horrible (due to our really bad hangover) to Tunis/Carthage airport, we were in the long security/passport check. When Bel n picked up her bag and mine didn't appear, I tried to tell myself hey, it'll appear, no worries! . After 15 minutes, the stupid suitcase was nowhere to be found. Apparently, another two pieces of luggage had the same luck, which made us contact a group of four Uruguayans who were missing one of them. Nothing too terrible; it'll surely come on tomorrow's flight. After reclaiming our lost luggage, we went out to the parking where a bus was waiting for us, and on the way there, the six of us nearly fell into the first Tunisian scam, involving a dude selling jasmine flowers at 2 each. The bus took us down to Jasmine Hammamet, the most touristic place in Tunisia. Valencians might have an easy imagining the atrocity of the area by picturing what twice Marina d'Or plus Benidorm including Terra M tica would look like. Kilometres and kilometres of a disgusting Who can build the most horrible giant hotel right next to the beach contest. So it was pretty clear we had to spend as little time as possible in the area. We soon learned about how transport works in Tunisia. The cheapest is to use the public busses and the luagge collective taxis, we soon found out. Our first morning there, our guide Rejeb, working for Iberojet and Solplan touroperators, gave a talk where he advised us against travelling alone, specially around the South, while he offered organised trips around the country for every day of the week. Although we expected this danger! speech, we decided to book the two day trip to the South and Great South of the country, basically because it was the best way to see many places in a short time, even if it meant having limited time in each destination. We wandered around Jasmine Hammamet and discovered Carthage Land, sort of a Disneyland set in the age of Anibal and Carthage's empire, which was inside a newly built medina complex. This was a really bad place to practice the art of haggling, as the place was so desert, merchants really tried hard to get you buy something. Again, we were close to fucking up after our first negotiation, but we finally decided we weren't so interested. Lucky, we later found out the price was outrageous. Sadly, we spent way too much time in that tourist trap, and we found it was too late to go to the real Hammamet town to see a real medina and real stuff, so we had a long walk around the immense beach until sunset. On Wednesday, we did organise a bit with the Uruguayans and some others we had met: Mar a and Santi Kuchi Kuchy , Cristina and Pedro and an Argentinian family, and managed to hire a van driver to drive us all over the North. For quite a good price, we were taken to a few ruin sites in Carthago, now mostly a residential area, and it was really impressive. While the condition of many of the remainings is not optimal, it was exciting to see things which had been built by Phoenicians and Romans 2,000 years ago. I really enjoyed the remainings of the Antonine thermal baths of the city. It had been a huge building right next to the sea; one of the standing columns helps figuring out how big it had been. Right next to this site, the Presidential Palace dominated the whole gulf. Military places are treated zealously in Tunisia, and it is against the law to take pictures of any bit of it, not even a barbwire of the fence. The Palace had a great Tunisian flag waving over it, and many signs advised you against taking pictures in that direction. I couldn't resist.


The ruins of the Roman Antonine Baths After Carthage, we went to Sidi Bou Said, a small touristic town, which had the peculiarity and beauty of having all windows and doors painted in a beautiful light blue colour. Our last stop for the day was in Tunis, where we visited the most amazing medina of the whole week. Unlike the new medina in Jasmine Hammamet, this one was literally packed with people going up and down the maze of very narrow streets. Every few metres you'd come across a new, attractive smell coming from the few salons de th or spice, leather or perfume shops. Here we finally started developing our haggling skills, and managed to get a few items for reasonable amounts.


Streets of Sidi Bou Said Back at our hotel, everyone tried to get a quick dinner and go early to bed, as next morning we were taking a bus for our trip around the South. There was time to call yet another time to the Airport, to find out that one of the luggage pieces had been found. While there was no news about my suitcase, we shared a taxi to the airport to pick the found suitcase, and see if mine was actually there by any chance. Unluckily, it wasn't, so I wouldn't have any clothes for the desert visit. Some people in the group were kind enough to lend me some t-shirts and pants. For my underwear, I actually resorted to using some of Bel n's (no kidding, it was way too sexy :P), while mine dried up after some manual washing. The alarm clock went off at 5:15 or so, and soon after we were ready in the hall with our small bags. When the bus was ready to pick us up, the guide said we weren't allowed in, as we weren't on the list. WTF? We were nearly the first ones to book and pay for it! So he finally let us in, for a short while, until he realised there was no space for everyone, so he demanded that we got off. Of course, we didn't, and a long and very disgusting argument started between the guide, us and a few people who had seen us pay for our trip, and were trying to support us. To make a long story short, we ended up stepping down when I noticed the bus driver calling the police, and after Rejeb, our guide, told us the other bus would be waiting for us at the travel agency if we quickly took a taxi there. We of course knew that was a fantasy to get the bus moving, but dealing with the police at 6:30AM wasn't on my list of activities for the day, so we finally gave up to let the rest of the people get in time to their visits, as they were very tightly scheduled to make everything fit in two days. Nobody was waiting for us at the travel agency, but we were promised our money back, which did happen in the evening; our plans for Thursday and Friday were a bit broken though, and the rest of the morning was spent looking for alternatives. When we had managed to book a new trip in a different agency for Saturday, we took the bus to Nabeul, the capital of the province, well known for their medina specialised in pottery. In Nabeul, we lived a tourist trap which I found to be quite original. Not having walked 3 metres into the city walls, some young dude stops us and tells us that he knows us, as he works in the restaurant of our hotel . I totally didn't remember his face at all, but why not? So he quickly tells us Nabeul has good carpet workshops, and her sister is working in one which is regulated by the Government, and you can only visit two days a week. Coincidentally, Thursday is one of them! So he literally grabs us by the arm and takes us to one of the streets perpendicular to the main market street, and we enter a carpet shop. To the right, his sister probably being like 45 years older, is knitting a nice carpet on the loom. And a few seconds after, we're taken upstairs, where a Teletienda show starts before us. Without being asked if we want to buy a carpet, some other dude starts to unroll carpets and more carpets before us, talking in some very basic Spanish. While we're offered jasmine tea, which is really nice, Ali the brother quickly excuses himself and vanishes, leaving us with the salesman, which continues unrolling more and more before us, now helped by someone else. When 10 minutes later we convince them that we won't buy any carpet, he asks a donative for his young employee, who has unrolled and will now roll back a zillion carpets. Back in the hotel, we have dinner with a pair of Catalans from our flight, and when we tell us about the carpet place, they tell us they went over the same story like one hour before us! On Friday, we got some advice on other places to visit, and decided to go up to Cape Bon and visit Kerkuan, the only important remainings of a Punic city which, when conquered by the Romans, was destroyed to the grounds, but not rebuilt on top (they were busy with Carthage). Romans did an excellent job when destroying cities, and the result is a site which still lets you see perfectly how a small town (around 1,500) looked like 2,000 years ago.


Ruins of a Kerkuan neighbourhood, with their red bathrooms nearly intact To reach Kerkuan we had taken the bus up to Nabeul and then our first luagge to Kelibia, where we took a taxi (after no less than half an hour arguing in French with the taxi driver to settle on a rate for a ride to Kerkuan and then to the tip of the Cape in El Haouaria. Luagges are undoubtedly the best way to travel medium distances for very little money, while getting mixed with locals. During our ride up North, we chatted with a nursing student from Kelibia who was going back to her town for the weekend. She was really open, like most of the people we found in Tunisia, and we ended up exchanging our post addresses; we still need to send her a postcard from Val ncia soonish. This area wasn't so touristic, so the roads, while totally acceptable, weren't as good as the highway from Tunis to Sfax we were used to. We had seen some bits of the local driving skills , but the luagge driver performed some of the most extreme overtakings I've ever seen. These happened every three of four minutes, so after a while I was actually amused about what was going on. We would overtake two lorries on one go when there was absolutely no visibility; if things went too far, people would just slow down to let the overtaker get back into his lane on time, and those coming ahead would just use their headlamps to make them know it was just a bit too close. The taxi driver, annoyed at us, took us to Kerkuan but didn't wait for us; he immediately left, leaving us without any transportation in the middle of nowhere. After a visit at the site, we walked around 2.5 kilometres back to the main road, where we decided it was too late and risky to continue the journey up to El Haouaria, so we waited on the road gutter for a taxi. The first one which stopped was, to our surprise, the same bastard who left us one hour before, who stopped, laughing at us a little. Luckily some other taxi came by in the correct direction, and soon forgot about that man. After a taxi, luagge and bus ride, we were back in Hammamet, and the desert group had already got back from the two day trip. We were asked over and over what happened, what did we do, etc. People who hadn't talked to us before would come over and see; we were really surprised about the warm welcome we had. After dinner, we improvised a customes party, and many people managed to dress up in Tunisian/arabic fashions using bed sheets and so on. We had to wake up at 5AM next morning, but didn't go to bed until 2AM. Nothing could go wrong this time. We had our tickets, we had confirmed we would be going on Sunday the night before, so at 6:15, our new guide came in, and came straight towards me. He said something in German, and after I told him I spoke absolutely no German, he said huh, well you know the bus is full of Germans, and my indications will be in German? . Pretty incredible, but again a fuckup by the agency. My ticket said, clearly: Sahara safari. Bus + 4x4. (ALL). Turns out ALL meant Allemand, not everything included , although we had requested English pretty clearly. This was quite a minor problem though, after having no clothes for a whole week and having been left behind two days before. I think we were really lucky getting that German group, though. We were only 16 people on the minibus, making the stops a lot faster than the normal ones, where 55 persons need to get out and in of the bus. We had our own Routard guide for Tunisia, so we could read about the places we were about to visit before getting ther. Also, I surprisingly knew much of what our guide was talking about, just missing the details he talked about oil production in Tunisia compared to Spain's, among other topics . When the landscape was becoming drier and drier, Bel n and I spotted something dark far away ahead in the completely straight road. As it became bigger, I started thinking it might be the #1 place to visit for me in Tunisia: El Djem's impressive Roman amphitheatre. When we got off the bus, I was totally excited. Before me, the walls of an incredibly well preserved, huge Roman building; in fact, the best Roman ruins in the whole continent. El Djem's amphitheatre was the third biggest of the Roman empire with 35,000 seats, only surpased by Rome's and Capua's. It remained mostly intact until the 17th century, when some of its stones were used to build the city and some of the treasures taken to the Great Mosque of Kairouan, but when it took more damage was during two consequent wars, when the Turks didn't have many problems to blow part of the wall away using cannons to end up a siege of the city.


The Roman amphitheatre of El Djem The underground tunnels are intact, and it's difficult to not have flashes of Gladiator while walking under the arena's trapdoors. Sadly, there was little time to spend there, and we had to continue the journey after just 45 minutes. I would have spent half of the day there. From here, the landscape truly started to get drier and more desertic. The south of Tunisia is a giant olive field, until you reach the Great South, where it's dry enough that the only thing that grows in the land are rocks. Hours later we arrived in Matm ta, the very famous troglodyte village of small holes in the ground. Although I was curious about being there, watching how organised and massive tourism has destroyed these Berber's ways of life dissapointed me greatly. Our guide stopped the bus in one of the pits, which was decorated with white and light blue. In the first room, an old woman was grinding something in a small, stone mill. The dwellers of the few pits still used by their original inhabitants now make a living by letting people into their homes and getting dinar as a payment for taking photographs. What the woman was doing was just a bit of theatre, part of the show. After this first room, we got into the middle of the pit, which had a series of other passages to some rooms, some of which were simply open so we could get in and have a look. I felt a little bit like violating someone's privacy, and wondered how much the house had changed in the last years.


Inside a troglodyte underground house in Matm ta After our visit, we continued up the mountains of Matm ta, and after going by a giant "WELCOME TO MATMATA" sign drawn in white in the middle of a mountain, Hollywood style (!), we stopped for a brief photo-stop (sic). Indeed, the view was quite impressive, and is universally famous as one of the filming spots of Tatoonie scenes in Star Wars: A New Hope. Speaking of famous places, a few minutes later we stopped at the top of one of the hills, were we'd have lunch in the Hotel Sidi Driss, a place of pilgrimage for Star Wars fans, as it was the troglodyte pit which served as the Skywalker's home. The place is full of references to the film saga, and one of the open pits is full of set pieces stuck into the walls. We were served couscous, which wasn't bad, but was cooked and served in the most genuine fast-food fashion. Everyone there gets couscous to eat, apparently, and it's the same in many other touristic places in the area.


Matm ta's lunar landscape From here, our journey headed straight West, in the middle of the rocky desert, until after some time, you could start to see lines of palm tree branches planted here and there, a sign that rocks would soon disappear, being replaced by sand and dunes. As when we were approaching El Djem, at some point a huge, dark spot appeared on the horizon. Douz, probably named after some 12th French batallion which stayed there, is a small town in the very limit of the Sahara desert, built right next to a huge oasis, exclusively dedicated to palm tree plantations, making dates production a big source of income, along with, of course tourism. The travel agencies use Douz as the starting point for several-day trips into the desert, camel rides and stuff like this. Our guide offered us getting a camel and carriage ride in Tozeus for 20 dinar, but Bel n and I declined. He didn't seem to be too happy about it, and had no problem commenting this in German and Arab with the driver (Spanisch and Spanien were clear to me). We learned that the agency (or the guide) makes around 3 Dinar for everyone who contracts the camel rides, after speaking to one native young kid who worked in the camel place. While our German trip mates got dressed in berber fashion, we opted to walk into the desert and play around in the sand on our own. I discovered a few desert insects which were unlike anything I've seen anywhere, and their diminute trails were all over the dunes. Looking West, the view was astonishing, with only thousands of kilometres of yellow dunes ahead us.


The evening sun over the dunes After they came back, we were taken to our hotel, which was really impressive. After leaving our stuff in our room, we headed back to the desert, which was like 300 metres away, to see the sunset over the Great Dune . There's a street which literally serves as the frontier between the rocky ground and the sand desert. From there, you could see many lines of palm tree branches, which are planted by locals in a futile attempt to stop the inexorable advance of the desert. Women in Douz and other towns in the desert limit spend their days sweeping the entrances to their homes, as sand gets in really fast. A small village next to Douz even had to be abandoned and rebuilt in some other place, with the old one being finally devoured by the dunes. When it got dark, we still had some time to kill before dinner, and we discovered a hammam in our hotel. I got in, and saw there was a bored young man inside. He informed us about the prices, and after some short deliberation, we realised we'd spent half of the camel money in some Arab relaxation; while I got a really cool massage, Bel n enjoyed a Turkish bath. I spoke to the guy for a while, and he said not that many people used that hammam. He actually handed the list of services since 2002, which easily fitted in one piece of paper. People don't know what they are missing; he explained that most of the hotel's clients just showed no interest in the baths. I wonder how Fins or Norwegians would react, given their sauna culture. The dinner and breakfast in that hotel was absolutely awesome, and I actually ate too much to have an easy sleep. Next morning we had to be ready at 5:30. That's pushing my limits. The bus started crossing the Chott Jerid when it was still quite dark. The chotts are dry, salt lakes in the middle of the desert, which during some seasons do get some water, sometimes from the underground. The Chott Jerid is the biggest of the three chotts in the area, and the views are fantastic. It's like a giant, totally flat muddy sea which reflects light creating dangerous mirages of oasis-like dark patterns. Before the construction of the recent road that links Douz and Tozeur, crossing the chott was so risky that many people died in the attempt. We had the unique opportunity to see the sun rise over the salty horizon.


Sunrise at the Chott Jerid Again, on our way to Tozeur, we were offered a carriage ride for ten dinar, and again we declined. The guide then asked us if we had no money or what. So in Tozeur we basically wanted to walk around the oasis fields, and ended up talking most of the time with some old man who sold drums and desert roses. On a 4x4, we went up North to Chebika, a really cool town with a small oasis of thermal water, which I guess was around 40 C. The short walk to the wall where the oasis surfaced was packed with children who insistently begged for money or offered necklaces and other items. It was difficult to make them understand you didn't want anything. We then went up the mountain behind Chebika through a road which had its own piece of history. It seems that during WWII, Rommel suffered an Allied siege in Chebika, with a range of mountains behind their backs. The Allies gave him one month to surrender, and he took his time to answer. During that time, he ordered his engineers to design and build a road which would let them escape Chebika through the steep mountains, and they managed. When the ultimatum expired, the Allies apparently found out Chebika had been abandoned by the Germans, including tanks and most of their equipment. So, on the way up, a few kilometres away from the Algerian border, there was another typical visit to the biggest oasis waterfall in Tunisia, which was several metres high.


The oasis at Chebika Our Sahara trip would soon end, and after lunch we headed Northeast on our way to Hammamet. On our way back, we stopped in Kairouan, one of the key Islam pilgrimace spots, with the Great Mosque as the biggest attraction. Unluckily, as we arrived after lunch, we didn't had a chance to see it. Apparently it is really impressive. We haggled a bit for a pair of babouches and a small leather couch in the medina. We came back to our hotel around 7, and found most of the people around the hall. After the obligatory update on how it went, we went to bed as we were exhausted, and of course we had to get up really early to head to the airport. The airport was at that early time of the morning a total chaos, and while people stood in the checkin lines, I tried to find out what was going on with my still lost luggage. I went back to the lost luggage window, which would be closed for 5 more minutes. When they finally opened, they told me once again they had no clue about what was going on with my luggage. I finally understood they had no clue: my tracking number wasn't in their database. I asked them if I could have a look at the unreclaimed luggage storage room. They kindly opened a small door for me, and invited me to go inside and have a look. The view was gross: hundreds of lost bags all over the place. As I was in a bit of a hurry (I actually had to get back to Barcelona), I asked him where to find the bags of one week ago, and he nearly bursted into laugher. Okay, I had to look all over the place, scanning every piece of luggage in an attempt to spot mine. There were bags of absolutely every type in there. In one of the corridors, I sensed a disgusting smell, and figured out some poor guy may have food or something in one of their lost bags, which was rotting in that horrible room. So wrong: soon after I found myself nearly stepping on a puddle of shit, as if someone had literally dumped it right there. Oh my... luckily my search was nearly over and unsuccessful, and I got back to Barcelona with the hope of finding my bag in El Prat. After looking in their two storage rooms I realised I'd probably not see the luggage again, which is a real pain in the ass. A few hours of train later we were back in Val ncia, with a feeling of having spent 3 or 4 weeks in Tunisia, not just 8 days. Really a great place to visit, not only for their cultural treasures, both current and ancient, but for the openness of their people. I hope I'll be back at some point!

Erich Schubert: iCalendar is broken by design

Seriously, RFC2445 is on crack. No wonder that few apps handle recurrence rules properly. Let me give you some examples straight from the RFC:
RRULE:FREQ=YEARLY;INTERVAL=2;BYMONTH=1; BYDAY=SU;BYHOUR=8,9;BYMINUTE=30
These are tons of events: at 8:30 and 9:30 every other year, every sunday in january. That's not precisely what I'd call a yearly frequency... I mean, we're talking about every sunday in januar. I'd more call that like... weekly. And yes, this is the official solution:
"every Sunday in January at 8:30 AM and 9:30 AM, every other year"
Note that you can not do 8:30 AM and 9:00 AM. You could do 8:00 AM, 8:30 AM, 9:00 AM and 9:30 AM (using BYMINUTE=0,30). Pure crack.
Everyday in January, for 3 years:
DTSTART;TZID=US-Eastern:19980101T090000 RRULE:FREQ=YEARLY;UNTIL=20000131T090000Z; BYMONTH=1;BYDAY=SU,MO,TU,WE,TH,FR,SA or RRULE:FREQ=DAILY;UNTIL=20000131T090000Z;BYMONTH=1 Isn't that totally on crack? Using FREQ=YEARLY for everyday in january? Notice how the semantics of "BYMONTH" change? In the first case, it's creating multiple events (BYMONTH=1,2 would name january and february independently); in the second case it's used to filter out individual days. Let me explain that a bit more: FREQ=YEARLY;BYDAY=MO,WE means every Monday and Wednesday. See how the modifier makes about 104 recurrences out of a single year? FREQ=HOURLY;BYDAY=MO,WE means every hour, but only on Monday or Wednesday. In this case, the modifier reduces the hourly events by throwing out all that are on other weekdays, reducing the number of recurrences. Again, this is not my weird reading, but the RFC says:
BYxxx rule parts for a period of time which is the same or greater than the frequency generally reduce or limit the number of occurrences of the recurrence generated. [...] BYxxx rule parts for a period of time less than the frequency generally increase or expand the number of occurrences of the recurrence.
(Note that I didn't find any details on if they consider a week to be be "less" or "more" than a month, since there is no obvious subset relationship, but a week can overlap two months, and a month usually overlaps five weeks... So if I have FREQ=WEEKLY;BYMONTH=1;BYDAY=WE, is that Monday in every week overlapping January? Every week completely contained in January? If I'd want every Monday in January, I'd use FREQ=DAILY;BYMONTH=1;BYDAY=MO...) Intersecting or joining two RRULE specifications is usually impossible (try to write one rule that is 8:00 and 9:30 every day for convincing yourself that a join won't work, and try to intersect FREQ=DAILY;INTERVAL=3 and FREQ=YEARLY;INTERVAL=2...) Anyway, I'm truly not suprised that my mobile and probably many other applications don't handle recurring events completely (that is when importing from iCal they often just lose the repetitions). My own implementation is doing okay. There are still a few missing features (BYSETPOS e.g. which can be used to say "the second to last tuesday or thursday each month"; should be trivial to add however, just picking the appropriate indexes out of a list), and some odd corner cases to dig in the specs and resolve (e.g. "every other week on friday, starting saturday march 3" - are we talking in business weeks, or intervals of 7 days here? When talking in weeks, is it friday in the week containing march 3, or following march 3, since that day itself is not a friday!) Some of these details probably vary heavily from iCalendar-supporting application to another... e.g. FREQ=DAILY;BYHOUR=8;UNTIL=20070215T000000Z does this include a recurrence on 2007/02/15 at 8:00 (which is past the UNTIL time, however the hour of the UNTIL field is not used in presence of BYHOUR). If you ever design a language for specifying recurrences, please: Consider something like (intersect (repeat daily interval=3) (union (repeat weekly monday) (repeat monthly 1) ) ) (i.e. every 3 days, if they fall on the first of the month or on a monday) Also spend some time thinking about alignment: "Every monday in a week containing the 15th of a month." - months and weeks are not aligned; assuming a week being defined as Monday-Sunday, this can be any day between the 9th and 15th of the month (in fact you could specify this in iCalendar, but it's probably easy to come up with an example that is too difficult to represent in iCalendar RRULEs, albeit trivial to calculate.)

14 February 2007

Gerfried Fuchs: Localized XMMS-SID

ccr has uploaded a new beta version of his fabulous xmms-sid extension for the X MultiMedia System which now also supports localization. I have prepared a package so you can test it, start localizing it for your language, or just enjoy it. I have noticed some possible wrong implementation of the i18n infrastructure, I had to do the msgfmt for the de.po myself — if you know what goes wrong here any input is absolutely welcome.

MJ Ray: Darling cheese head SPI was yards too greasy (2)

Jimmy Kaplowitz commented:
"The text "the board to confirm SPI's view of debian" goes to a 404 not found error page. If you are referring to this post: then I certainly had no idea what correspondence you were asking the secretary to report, and he may well not have known either if he wasn't up on the latest posts to debian-vote."
I'm not referring to that post. I sent a later message to board cc:general. I got bored waiting for it to appear, so I linked to where the next message will appear. I'm surprised it hasn't appeared yet. That's probably something to do with SPI's email-hostile server config, which I asked the board to address last month and they deferred.
"Please don't attribute a lack of response to a desire to avoid questions and add red tape when it can mostly be explained by a simple lack of understanding of the question. (Yes, if Neil had acted perfectly he would have replied to your mail asking what correspondence you meant, and if you had acted perfectly you would have included a link to the correspondence in the first place. Nobody's perfect.)"
I don't know what correspondence has been received, so how can I link it? I could link one example from me, I guess, but presumably there is more.
"I also can't find the correspondence to which you refer in any of my SPI list archives, private or not. If it was a direct mail to the secretary, then maybe Neil should have replied, but Neil is no more able to speak for the board in these matters than any other individual director. We'd need to pass a resolution if you wanted an official statement to end any confusion. Personally I think that SPI would act on a GR that overrode a DPL decision in keeping with the Debian Constitution, but as I just said, neither I nor any board member who spoke up on debian-vote can rightly express an opinion of the board on this matter in the absence of a resolution. Certainly a resolution would be reasonable."
I thought Neil is no more able to speak for the board than Joey or any other director. However, when I asked Joey to show proof that SPI only views the DPL, Neil posted. Neil's SPI secretary, so should know whether some proof exists, right? Now it seems a no-op resolution is needed to sort this out, as neither Joey or Neil agreed that SPI would follow non-DPL decisions. In a word: argh.

Benjamin Mako Hill: A Definition of Free Cultural Works

Last year, I announced a project to bring together artists, content creators, and others who care about freedom to come up with a clear set of goals around which a social movement for essential freedoms around culture might be based. There has been a lot of discussion and a number of important changes to the document over the last year. A few days ago, we finally released "1.0" of our definition with this announcement:
A diverse group of writers has released the first version of the "Definition of Free Cultural Works." The authors have identified a minimum set of freedoms which they believe should be granted to all users of copyrighted materials. Created on a wiki with the feedback of Wikipedia users, open source hackers, artists, scientists, and lawyers, the definition lists the following core freedoms:
  • The freedom to use and perform the work
  • The freedom to study the work and apply the information
  • The freedom to redistribute copies
  • The freedom to distribute derivative works.
Inspired by the Free Software Definition and the ideals of the free software and open source movements, these conditions are meant to apply to any conceivable work. In reality, these freedoms must be granted explicitly by authors, through the use of licenses which confer them. On the website of the definition a list of these licenses can be found. Furthermore, authors are encouraged to identify their works as Free Cultural Works using a set of logos and buttons. The definition was initiated by Benjamin Mako Hill, a Debian GNU/Linux developer, and Erik M ller, an author and long-time Wikipedia user. Wikipedia already follows similar principles to those established by the definition. Angela Beesley, Wikimedia Advisory Board Chair and co-founder of Wikia.com; Mia Garlick, general counsel of Creative Commons; and Elizabeth Stark of the Free Culture Student Movement acted as moderators, while Richard Stallman of the Free Software Foundation and Lawrence Lessig of Creative Commons provided helpful feedback. As more and more people recognize that there are alternatives to traditional copyright, phrases like "open source," "open access," "open content," "free content," and "commons" are increasingly used. But many of these phrases are ambiguous when it comes to distinguishing works and licenses which grant all the above freedoms, and those which only confer limited rights. For example, a popular license restricts the commercial use of works, whereas the authors believe that such use must be permitted for a work to be considered Free. Instead of limiting commercial use, they recommend using a clever legal trick called "copyleft:" requiring all users of the work to make their combined and derivative works freely available. M ller and Hill encourage authors to rethink copyright law and use one of the Free Culture Licenses to help build a genuine free and open culture.
If you haven't yet, please check out the project at freedomdefined.org. If you're still curious feel free to read about my motivation and why I think that everyone should stand up for what they feel are essential freedoms.

MJ Ray: Darling cheese head SPI was yards too greasy

SPI's February meeting (agenda) on Friday is approaching and the board seems to have gone all evasive and yeti-like. For yet another month, I've heard nothing in response to simple questions and over on debian-vote, board members posted a bizarre claim about how SPI acts for debian and a direction back to SPI so I've asked the board to confirm SPI's view of debian but this is all yards too greasy, really. I'm getting quite irritated with the question-avoiding and red tape from the board, as you can maybe tell from the tone of:
"In case anyone hasn't noticed, it seems very difficult to get anything like a straight answer out of most of the current SPI board lately. Try it for yourself. Fun for all the debian family. Knock one over, win a coconut and five tons of flax!"
There only seems to be one responsive sane board member at present and that's just not enough to ensure SPI members can exercise their right to oversee the board's work. SPI seems to be going delinquent again. Please correct it before it does much damage. Please, debian, postgresql and GNUstep developers in particular, please request your contributing membership and help get this organisation back on track. Post title is from cult advert Me ears are alight

13 February 2007

David Welton: Trawling for reading material

Yep, time to stock up on some new books. I'm interested in: That's certainly a broad range, but the reason I'm writing here, is that I'm looking for books other people like me considered a good read, and not just an idea I can glean from the wikipedia summary of the book. Yoav seems to share some of my tastes, for instance. Some of the books I'm considering: What I've already read, and would recommend to others: http://www.dedasys.com/freesoftware/ (under 'Recommended reading')

Eddy Petrișor: yet another disguised rant or how you won't run GDB remotely

I tried for the whole day to understand how I can debug remotely an application in a qemu machine.

Why would I want that?
The closest I could get was to start by hand qemu with the guest qemu serial port set on a tcp socket, start gdbserver on (guest) /dev/ttyS0 and try to start gdb remotely on that socket opened by qemu. This resulted, as expected in some errors...

Now, after reading all kinds of threads on the net, reading qemu's docs and gdb's docs, I gave up, I am installing X in the qemu machine.

BTW, I couldn't find a way to tell DDD to connect to a socket to debug :-/.


Of course, any help and advices would be mostly appreciated.

Miriam Ruiz: Threads considered harmful (what about coroutines?)

In 2006, Edward A. Lee wrote The Problem With Threads (PDF), in which he observes that threads remove determinism and open the door to subtle yet deadly bugs. While the problems are maybe manageable on single core systems, threads on multicore systems are likely to magnify the problems out of control. According to Wikipedia, coroutines are “program components that generalize subroutines to allow multiple entry points and suspending and resuming of execution at certain locations”. Coroutines are well-suited for implementing more familiar program components such as cooperative tasks, iterators, infinite lists, and pipes. Coroutines are more generic than subroutines. The start of a coroutine is the first point of entry, and places within a coroutine following returns (yields) are subsequent points of entry. Coroutines are also a lot faster than processes or threads switch, since there is no OS kernel involvement for the operation. Even though coroutines are supported in some high-level languages, there doesn’t seem to be an standard implementation of them in C or C++. The first time I heard about coroutines were in Lua. Since then, I’ve been trying to find a good solution for using them in C. Simon Tatham proposes a way of implementing them with a combination of subroutines and macros, but I think that, even creative and clean, this is a dirty approach for real code. What about handling with errors in the code? I still have nightmares when I have some problem to debug in STL-based code. Cryptic, the least. Due to the limitations of standard C libraries, some authors have written their own libraries for coroutines:

Paul Wise: 13 Feb 2007

On the way home from Thailand, I saw Linux booting and X starting up on the in-seat screens on our Malaysia Airlines flight. Also got a funny cartoon for my birthday called "The adventures of debianman".

12 February 2007

Russell Coker: John Howard is bizarre

Our despicable prime minister said "I think that would just encourage those who wanted completely to destabilise and destroy Iraq, and create chaos and victory for the terrorists to hang on and hope for (an) Obama victory".

That statement is wrong in many ways, firstly the US (with Australian help) has destabilised and destroyed Iraq already. Claiming that removing US troops at this stage will do any further harm is unproven (and except for the Kurdish area extremely unlikely). Trying to link a presidential candidate with a terrorist organisation is the worst type of dirty politics.

Texas Republican senator John Cornyn requested that the Australian government stay out of US politics. It sounds like a reasonable request. But I wonder whether John Cornyn got involved when the US ambassador spoke out against the leader of the Labor party at the last Australian Federal election...

Senator Obama suggested that if John Howard wants to criticise his policies in Iraq then he should first send another 20,000 Australian troops (there are currently 140,000 US troops compared to 1,400 Australians). According to the CIA World Fact Book Australia has a population of 20.3M while the US has a population of 298.4M. If the ratio of serving soldiers was to match the populations then Australia would have 9,500 troops in Iraq. If Australia was to be a full military partner of the US (but scaled down due to the smaller population) and therefore had troops in South Korea, Japan, and Germany then the number of Australian troops committed might be closer to the 20,000 number cited.

But this is no criticism of Senator Obama. For a number that was made up to demonstrate his point that Australia is not pulling it's weight in Iraq it's a quite reasonable estimate.

The US Democrat Senator Ron Wyden correctly described Howard's comment as "bizarre". This may become a catch-phrase for the Howard regime (as the Bush regime is described as a "miserable failure").

Johnny seems to think that it's in his best interests to send Australians to fight a war that has no benefit for Australia (or the US for that matter), but he doesn't have the guts to do it properly. Fortunately for him the Bush regime understands his position and allows him to send a token force to demonstrate support without the risk of any significant number of casualties or having to conscript soldiers.

This mutual meddling in elections is a demonstration of the way Bush and Howard conspire against the interests of the Australian and US citizens. Both countries need governments that look after the interests of their citizens at home and let the UN take a larger role in world issues.

Felipe Augusto van de Wiel: 12 Feb 2007

Frustration...

No Primary MX for a while
Since last thursday (2007-02-08) my main MX server was stopped to get some maintainance (IDE problems, could be the hard disk, IDE cables or something else, amazing ahm?), anyway, we moved the important stuff away from the line, did our homework testing the secondary MX and stopped the machine. Until now the DataCenter didn't told me when the machine should be back and I'm really hoping to get it back by tomorrow (2007-02-12).

In the meanwhile, the messages are safe, waiting in a temporary queue, we are not expecting to have a downtime of four long days. Anyway, I will need to catch up with my mail in the next days, I'm trying to keep up-to-date using the web archives and doing l10n stuff for Debian. :-(

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