<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/Robot__reis_deg___.html">Robot, reis deg...</a></div>
- <div class="date">2010-08-21 22:10</div>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/165_norske_overv__kningskamera_registert_s___langt_i_OpenStreetmap_org.html">165 norske overvåkningskamera registert så langt i OpenStreetmap.org</a></div>
+ <div class="date">2010-12-24 11:20</div>
<div class="body">
-<p>I dag fikk jeg endelig tittet litt på mine nyinnkjøpte roboter, og
-har brukt noen timer til å google etter interessante referanser og
-aktuell kildekode for bruk på Linux. Det mest lovende så langt er
-<a href="http://ispykee.toyz.org/">ispykee</a>, som har en
-BSD-lisensiert linux-daemon som står som mellomledd mellom roboter på
-lokalnettet og en sentral tjeneste der en iPhone kan koble seg opp for
-å fjernstyre roboten. Linux-daemonen implementerer deler av
-protokollen som roboten forstår. Etter å ha knotet litt med å oppnå
-kontakt med roboten (den oppretter et eget ad-hoc wifi-nett, så jeg
-måtte gå av mitt vanlige nett for å få kontakt), og kommet frem til at
-den lytter på IP-port 9000 og 9001, gikk jeg i gang med å finne ut
-hvordan jeg kunne snakke med roboten vha. disse portene. Robotbiten
-av protokollen er publisert av produsenten med GPL-lisens, slik at det
-er mulig å se hvordan protokollen fungerer. Det finnes en java-klient
-for Android som så ganske snasen ut, men fant ingen kildekode for
-denne. Derimot hadde iphone-løsningen kildekode, så jeg tok
-utgangspunkt i den.</p>
-
-<p>Daemonen ville i utgangspunktet forsøke å kontakte den sentrale
-tjenesten som iphone-programmet kobler seg til. Jeg skrev dette om
-til i stedet å sette opp en nettverkstjeneste på min lokale maskin,
-som jeg kan koble meg opp til med telnet og gi kommandoer til roboten
-(act, forward, right, left, etc). Det involverte i praksis å bytte ut
-socket()/connect() med socket()/bind()/listen()/accept() for å gjøre
-klienten om til en tjener.</p>
-
-<p>Mens jeg har forsøkt å få roboten til å bevege seg har min samboer
-skrudd sammen resten av roboten for å få montert kamera og plastpynten
-(armer, plastfiber for lys). Nå er det hele montert, og roboten er
-klar til bruk. Må få flyttet den over til mitt vanlige trådløsnett
-før det blir praktisk, men de bitene av protokollen er ikke
-implementert i ispykee-daemonen, så der må jeg enten få tak i en mac
-eller en windows-maskin, eller implementere det selv.</p>
-
-<p>Vi var tre som kjøpte slike roboter, og vi har blitt enige om å
-samle notater og referanser på <a
-href="http://wiki.nuug.no/grupper/robot/">NUUGs wiki</a>. Ta en titt
-der hvis du er nysgjerrig.</p>
+<p>Jeg flikket litt på OpenStreetmap.org i går, og oppdaget ved en
+tilfeldighet at det er en rekke noder som representerer
+overvåkningskamera som ikke blir med på kartet med overvåkningskamera
+i Norge som
+<a href="http://people.skolelinux.org/pere/blog/Kart_over_overv__kningskamera_i_Norge.html">jeg
+laget</a> for snart to år siden. Fra før tok jeg med noder merket med
+man_made=surveillance, mens det er en rekke noder som kun er merket
+med highway=speed_camera. Endret på koden som henter ut kameralisten
+fra OSM, og vips er antall kamera økt til 165.</p>
+
+<a href="http://people.skolelinux.no/pere/surveillance-norway/">Kartet</a>
+er fortsatt ikke komplett, så hvis du ser noen kamera som mangler,
+legg inn ved å følge instruksene fra
+<a href="http://personvern.no/wiki/index.php/Kameraovervåkning">prosjektsiden</a>.
+Hvis du vet om noen flere måter å merke overvåkningskamera i OSM, ta
+kontakt slik at jeg kan få med også disse.</p>
</div>
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>, <a href="http://people.skolelinux.org/pere/blog/tags/robot">robot</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>, <a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern</a>.
</div>
</div>
<div class="padding"></div>
<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/2_Spykee_roboter_i_hus__n___skal_det_lekes.html">2 Spykee-roboter i hus, nå skal det lekes</a></div>
- <div class="date">2010-08-18 13:30</div>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/How_to_test_if_a_laptop_is_working_with_Linux.html">How to test if a laptop is working with Linux</a></div>
+ <div class="date">2010-12-22 14:55</div>
<div class="body">
-<p>Jeg kjøpte nettopp to
-<a href="http://www.spykee-robot.com/">Spykee</a>-roboter, for test og
-leking. Kjøpte to da det var så billige, og gir meg mulighet til å
-eksperimentere uten å være veldig redd for å ødelegge alt ved å bytte
-ut firmware og slikt. Oppdaget at lekebutikken på Bryn senter hadde
-en liten stabel på lager som de ikke hadde klart å selge ut etter
-fjorårets juleinnkjøp, og var villig til å selge for en femtedel av
-vanlig pris. Jeg, Ronny og Jarle har skaffet oss restbeholdningen, og
-det blir morsomt å se hva vi får ut av dette.</p>
-
-<p>Roboten har belter styrt av to motorer, kamera, høytaler, mikrofon
-og wifi-tilkobling. Det hele styrt av en GPL-lisensiert databoks som
-jeg mistenker kjører linux. Firmware-kildekoden ble visst publisert i
-mai. Eneste utfordringen er at kontroller-programvaren kun finnes til
-Windows, men det må en kunne jobbe seg rundt når vi har kildekoden til
-firmwaren. :)</p>
+<p>The last few days I have spent at work here at the <a
+href="http://www.uio.no/">University of oslo</a> testing if the new
+batch of computers will work with Linux. Every year for the last few
+years the university have organized shared bid of a few thousand
+computers, and this year HP won the bid. Two different desktops and
+five different laptops are on the list this year. We in the UNIX
+group want to know which one of these computers work well with RHEL
+and Ubuntu, the two Linux distributions we currently handle at the
+university.</p>
+
+<p>My test method is simple, and I share it here to get feedback and
+perhaps inspire others to test hardware as well. To test, I PXE
+install the OS version of choice, and log in as my normal user and run
+a few applications and plug in selected pieces of hardware. When
+something fail, I make a note about this in the test matrix and move
+on. If I have some spare time I try to report the bug to the OS
+vendor, but as I only have the machines for a short time, I rarely
+have the time to do this for all the problems I find.</p>
+
+<p>Anyway, to get to the point of this post. Here is the simple tests
+I perform on a new model.</p>
<ul>
-<li><a href="http://en.wikipedia.org/wiki/Spykee">Wikipedia-oppføring</a></li>
-<li><a href=http://www.spykeeworld.com/spykee/US/freeSoftware.html">Nedlasting av firmware-kilden</a></li>
-<li><a href="http://wiki.nuug.no/grupper/robot">prosjektwiki hos NUUG</a></li>
+
+<li>Is PXE installation working? I'm testing with RHEL6, Ubuntu Lucid
+and Ubuntu Maverik at the moment. If I feel like it, I also test with
+RHEL5 and Debian Edu/Squeeze.</li>
+
+<li>Is X.org working? If the graphical login screen show up after
+installation, X.org is working.</li>
+
+<li>Is hardware accelerated OpenGL working? Running glxgears (in
+package mesa-utils on Ubuntu) and writing down the frames per second
+reported by the program.</li>
+
+<li>Is sound working? With Gnome and KDE, a sound is played when
+logging in, and if I can hear this the test is successful. If there
+are several audio exits on the machine, I try them all and check if
+the Gnome/KDE audio mixer can control where to send the sound. I
+normally test this by playing
+<a href="http://www.nuug.no/aktiviteter/20101012-chef/ ">a HTML5
+video</a> in Firefox/Iceweasel.</li>
+
+<li>Is the USB subsystem working? I test this by plugging in a USB
+memory stick and see if Gnome/KDE notices this.</li>
+
+<li>Is the CD/DVD player working? I test this by inserting any CD/DVD
+I have lying around, and see if Gnome/KDE notices this.</li>
+
+<li>Is any built in camera working? Test using cheese, and see if a
+picture from the v4l device show up.</li>
+
+<li>Is bluetooth working? Use the Gnome/KDE browsing tool to see if
+any bluetooth devices are discovered. In my office, I normally see a
+few.</li>
+
+<li>For laptops, is the SD or Compaq Flash reader working. I have
+memory modules lying around, and stick them in and see if Gnome/KDE
+notice this.</li>
+
+<li>For laptops, is suspecd/hibernate working? I'm testing if the
+special button work, and if the laptop continue to work after
+resume.</li>
+
+<li>For laptops, is the extra buttons working, like audio level,
+adjusting background light, switching on/off external video output,
+switching on/off wifi, bluetooth, etc? The set of buttons differ from
+laptop to laptop, so I just write down which are working and which are
+not.</li>
+
+<li>Some laptops have smart card readers, finger print readers,
+acceleration sensors etc. I rarely test these, as I do not know how
+to quickly test if they are working or not, so I only document their
+existence.</li>
+
</ul>
+
+<p>By now I suspect you are really curious what the test results are
+for the HP machines I am testing. I'm not done yet, so I will report
+the test results later. For now I can report that HP 8100 Elite work
+fine, and hibernation fail with HP EliteBook 8440p on Ubuntu Lucid,
+and audio fail on RHEL6. Ubuntu Maverik worked with 8440p. As you
+can see, I have most machines left to test. One interesting
+observation is that Ubuntu Lucid has almost twice the framerate than
+RHEL6 with glxgears. No idea why.</p>
</div>
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>, <a href="http://people.skolelinux.org/pere/blog/tags/robot">robot</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
</div>
</div>
<div class="padding"></div>
<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/Rob_Weir__How_to_Crush_Dissent.html">Rob Weir: How to Crush Dissent</a></div>
- <div class="date">2010-08-15 22:20</div>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/Some_thoughts_on_BitCoins.html">Some thoughts on BitCoins</a></div>
+ <div class="date">2010-12-11 15:10</div>
<div class="body">
-<p>I found the notes from Rob Weir on
-<a href="http://feedproxy.google.com/~r/robweir/antic-atom/~3/VGb23-kta8c/how-to-crush-dissent.html">how
-to crush dissent</a> matching my own thoughts on the matter quite
-well. Highly recommended for those wondering which road our society
-should go down. In my view we have been heading the wrong way for a
-long time.</p>
+<p>As I continue to explore
+<a href="http://www.bitcoin.org/">BitCoin</a>, I've starting to wonder
+what properties the system have, and how it will be affected by laws
+and regulations here in Norway. Here are some random notes.</p>
+
+<p>One interesting thing to note is that since the transactions are
+verified using a peer to peer network, all details about a transaction
+is known to everyone. This means that if a BitCoin address has been
+published like I did with mine in my initial post about BitCoin, it is
+possible for everyone to see how many BitCoins have been transfered to
+that address. There is even a web service to look at the details for
+all transactions. There I can see that my address
+<a href="http://blockexplorer.com/address/15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a>
+have received 16.06 Bitcoin, the
+<a href="http://blockexplorer.com/address/1LfdGnGuWkpSJgbQySxxCWhv8MHqvwst3">1LfdGnGuWkpSJgbQySxxCWhv8MHqvwst3</a>
+address of Simon Phipps have received 181.97 BitCoin and the address
+<a href="http://blockexplorer.com/address/1MCwBbhNGp5hRm5rC1Aims2YFRe2SXPYKt">1MCwBbhNGp5hRm5rC1Aims2YFRe2SXPYKt</A>
+of EFF have received 2447.38 BitCoins so far. Thank you to each and
+every one of you that donated bitcoins to support my activity. The
+fact that anyone can see how much money was transfered to a given
+address make it more obvious why the BitCoin community recommend to
+generate and hand out a new address for each transaction. I'm told
+there is no way to track which addresses belong to a given person or
+organisation without the person or organisation revealing it
+themselves, as Simon, EFF and I have done.</p>
+
+<p>In Norway, and in most other countries, there are laws and
+regulations limiting how much money one can transfer across the border
+without declaring it. There are money laundering, tax and accounting
+laws and regulations I would expect to apply to the use of BitCoin.
+If the Skolelinux foundation
+(<a href="http://linuxiskolen.no/slxdebianlabs/donations.html">SLX
+Debian Labs</a>) were to accept donations in BitCoin in addition to
+normal bank transfers like EFF is doing, how should this be accounted?
+Given that it is impossible to know if money can across the border or
+not, should everything or nothing be declared? What exchange rate
+should be used when calculating taxes? Would receivers have to pay
+income tax if the foundation were to pay Skolelinux contributors in
+BitCoin? I have no idea, but it would be interesting to know.</p>
+
+<p>For a currency to be useful and successful, it must be trusted and
+accepted by a lot of users. It must be possible to get easy access to
+the currency (as a wage or using currency exchanges), and it must be
+easy to spend it. At the moment BitCoin seem fairly easy to get
+access to, but there are very few places to spend it. I am not really
+a regular user of any of the vendor types currently accepting BitCoin,
+so I wonder when my kind of shop would start accepting BitCoins. I
+would like to buy electronics, travels and subway tickets, not herbs
+and books. :) The currency is young, and this will improve over time
+if it become popular, but I suspect regular banks will start to lobby
+to get BitCoin declared illegal if it become popular. I'm sure they
+will claim it is helping fund terrorism and money laundering (which
+probably would be true, as is any currency in existence), but I
+believe the problems should be solved elsewhere and not by blaming
+currencies.</p>
+
+<p>The process of creating new BitCoins is called mining, and it is
+CPU intensive process that depend on a bit of luck as well (as one is
+competing against all the other miners currently spending CPU cycles
+to see which one get the next lump of cash). The "winner" get 50
+BitCoin when this happen. Yesterday I came across the obvious way to
+join forces to increase ones changes of getting at least some coins,
+by coordinating the work on mining BitCoins across several machines
+and people, and sharing the result if one is lucky and get the 50
+BitCoins. Check out
+<a href="http://www.bluishcoder.co.nz/bitcoin-pool/">BitCoin Pool</a>
+if this sounds interesting. I have not had time to try to set up a
+machine to participate there yet, but have seen that running on ones
+own for a few days have not yield any BitCoins througth mining
+yet.</p>
+
+<p>Update 2010-12-15: Found an <a
+href="http://inertia.posterous.com/reply-to-the-underground-economist-why-bitcoi">interesting
+criticism</a> of bitcoin. Not quite sure how valid it is, but thought
+it was interesting to read. The arguments presented seem to be
+equally valid for gold, which was used as a currency for many years.</p>
</div>
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/
english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/lenker">lenker</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>, <a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern</a>, <a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/
bitcoin">bitcoin</a>, <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern</a>, <a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet</a>.
</div>
</div>
<div class="padding"></div>
<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/No_hardcoded_config_on_Debian_Edu_clients.html">No hardcoded config on Debian Edu clients</a></div>
- <div class="date">2010-08-09 20:15</div>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/Pornoskannerne_p___flyplassene_bedrer_visst_ikke_sikkerheten.html">Pornoskannerne på flyplassene bedrer visst ikke sikkerheten</a></div>
+ <div class="date">2010-12-11 10:45</div>
<div class="body">
-<p>As reported earlier, the last few days I have looked at how Debian
-Edu clients are configured, and tried to get rid of all hardcoded
-configuration settings on the clients. I believe the work to be
-mostly done, and the clients seem to work just fine with dynamically
-generated configuration.</p>
-
-<p>What is the point, you might ask? The point is to allow a Debian
-Edu desktop to integrate into an existing network infrastructure
-without any manual configuration.</p>
-
-<p>This is what happens when installing a Debian Edu client here at
-the University of Oslo using PXE. With the PXE installation, I am
-asked for language (Norwegian Bokmål), locality (Norway) and keyboard
-layout (no-latin1), Debian Edu profile (Roaming Workstation), if I
-accept to reformat the hard drive (yes), if I want to submit info to
-popcon.debian.org (no) and root password (secret). After answering
-these questions, the installer goes ahead and does its thing, and
-after around 50 minutes it is done. I press enter to finish the
-installation, and the machine reboots into KDE. When the machine is
-ready and kdm asks for login information, I enter my university
-username and password, am told by kdm that a local home directory has
-been created and that I must log in again, and finally log in with the
-same username and password to the KDE 4.4 desktop. At no point during
-this process did it ask for university specific settings, and all the
-required configuration was dynamically detected using information
-fetched via DHCP and DNS. The roaming workstation is now ready for
-use.</p>
-
-<p>How was this done, you might wonder? First of all, here is the
-list of things that need to be configured on the client to get it
-working properly out of the box:</p>
-
-<ul>
-<li>IP address/netmask and DNS server.</li>
-<li>Web proxy URL.</li>
-<li>LDAP server for NSS directory information (user, group, etc).</li>
-<li>Kerberos server for PAM password checking.</li>
-<li>SMB mount point to access the network home directory. (*)</li>
-<li>Central syslog server to send syslog messages to. (*)</li>
-<li>Sitesummary collector URL to submit info to central server. (*)</li>
-</ul>
-
-<p>(Hm, did I forget anything? Let me knew if I did.)</p>
-
-<p>The points marked (*) are not required to be able to use the
-machine, but needed to provide central storage and allowing system
-administrators to track their machines. Since yesterday, everything
-but the sitesummary collector URL is dynamically discovered at boot
-and installation time in the svn version of Debian Edu.</p>
-
-<p>The IP and DNS setup is fetched during boot using DHCP as usual.
-When a DHCP update arrives, the proxy setup is updated by looking for
-http://wpat/wpad.dat and using the content of this WPAD file to
-configure the http and ftp proxy in /etc/environment and
-/etc/apt/apt.conf. I decided to update the proxy setup using a DHCP
-hook to ensure that the client stops using the Debian Edu proxy when
-it is moved outside the Debian Edu network, and instead uses any local
-proxy present on the new network when it moves around.</p>
-
-<p>The DNS names of the LDAP, Kerberos and syslog server and related
-configuration are generated using DNS information at boot. First the
-installer looks for a host named ldap in the current DNS domain. If
-not found, it looks for _ldap._tcp SRV records in DNS instead. If an
-LDAP server is found, its root DSE entry is requested and the
-attributes namingContexts and defaultNamingContext are used to
-determine which LDAP base to use for NSS. If there are several
-namingContexts attibutes and the defaultNamingContext is present, that
-LDAP subtree is used as the base. If defaultNamingContext is missing,
-the subtrees listed as namingContexts are searched in sequence for any
-object with class posixAccount or posixGroup, and the first one with
-such an object is used as the LDAP base. For Kerberos, a similar
-search is done by first looking for a host named kerberos, and then
-for the _kerberos._tcp SRV record. I've been unable to find a way to
-look up the Kerberos realm, so for this the upper case string of the
-current DNS domain is used.</p>
-
-<p>For the syslog server, the hosts syslog and loghost are searched
-for, and the _syslog._udp SRV record is consulted if no such host is
-found. This algorithm works for both Debian Edu and the University of
-Oslo. A similar strategy would work for locating the sitesummary
-server, but have not been implemented yet. I decided to fetch and
-save these settings during installation, to make sure moving to a
-different network does not change the set of users being allowed to
-log in nor the passwords required to log in. Usernames and passwords
-will be cached by sssd when the user logs in on the Debian Edu
-network, and will not change as the laptop move around. For a
-non-roaming machine, there is no caching, but given that it is
-supposed to stay in place it should not matter much. Perhaps we
-should switch those to use sssd too?</p>
-
-<p>The user's SMB mount point for the network home directory is
-located when the user logs in for the first time. The LDAP server is
-consulted to look for the user's LDAP object and the sambaHomePath
-attribute is used if found. If it isn't found, the home directory
-path fetched from NSS is used instead. Assuming the path is of the
-form /site/server/directory/username, the second part is looked up in
-DNS and used to generate a SMB URL of the form
-smb://server.domain/username. This algorithm works for both Debian
-edu and the University of Oslo. Perhaps there are better attributes
-to use or a better algorithm that works for more sites, but this will
-do for now. :)</p>
-
-<p>This work should make it easier to integrate the Debian Edu clients
-into any LDAP/Kerberos infrastructure, and make the current setup even
-more flexible than before. I suspect it will also work for thin
-client servers, allowing one to easily set up LTSP and hook it into a
-existing network infrastructure, but I have not had time to test this
-yet.</p>
-
-<p>If you want to help out with implementing these things for Debian
-Edu, please contact us on debian-edu@lists.debian.org.</p>
-
-<p>Update 2010-08-09: Simon Farnsworth gave me a heads-up on how to
-detect Kerberos realm from DNS, by looking for _kerberos TXT entries
-before falling back to the upper case DNS domain name. Will have to
-implement it for Debian Edu. :)</p>
+<p>Via <a href="http://webmink.com/2010/12/10/links-for-2010-12-10/">en
+blogpost fra Simon Phipps i går</a>, fant jeg en referanse til
+<a href="http://www.washingtontimes.com/news/2010/dec/9/exposed-tsas-x-rated-scanner-fraud/">en
+artikkel i Washington Times</a> som igjen refererer til en artikkel i
+det fagfellevurderte tidsskriftet Journal of Transportation Security
+med tittelen
+"<a href="http://springerlink.com/content/g6620thk08679160/fulltext.html">An
+evaluation of airport x-ray backscatter units based on image
+characteristics</a>" som enkelt konstaterer at
+<a href="http://www.dailysquib.co.uk/?a=2389&c=124">pornoscannerne</a>
+som kler av reisende på flyplasser ikke er i stand til å avsløre det
+produsenten og amerikanske myndigheter sier de skal avsløre. Kort
+sagt, de bedrer ikke sikkerheten. Reisende må altså la ansatte på
+flyplasser <a href="http://www.thousandsstandingaround.org/">se dem
+nakne eller la seg beføle i skrittet</a> uten grunn. Jeg vil
+fortsette å nekte å bruke disse pornoskannerne, unngå flyplasser der
+de er tatt i bruk, og reise med andre transportmidler enn fly hvis jeg
+kan.</p>
</div>
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>, <a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern</a>, <a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet</a>.
</div>
</div>
<div class="padding"></div>
<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/Testing_if_a_file_system_can_be_used_for_home_directories___.html">Testing if a file system can be used for home directories...</a></div>
- <div class="date">2010-08-08 21:20</div>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/Now_accepting_bitcoins___anonymous_and_distributed_p2p_crypto_money.html">Now accepting bitcoins - anonymous and distributed p2p crypto-money</a></div>
+ <div class="date">2010-12-10 08:20</div>
<div class="body">
-<p>A few years ago, I was involved in a project planning to use
-Windows file servers as home directory servers for Debian
-Edu/Skolelinux machines. This was thought to be no problem, as the
-access would be through the SMB network file system protocol, and we
-knew other sites used SMB with unix and samba as the file server to
-mount home directories without any problems. But, after months of
-struggling, we had to conclude that our goal was impossible.</p>
-
-<p>The reason is simply that while SMB can be used for home
-directories when the file server is Samba running on Unix, this only
-work because of Samba have some extensions and the fact that the
-underlying file system is a unix file system. When using a Windows
-file server, the underlying file system do not have POSIX semantics,
-and several programs will fail if the users home directory where they
-want to store their configuration lack POSIX semantics.</p>
-
-<p>As part of this work, I wrote a small C program I want to share
-with you all, to replicate a few of the problematic applications (like
-OpenOffice.org and GCompris) and see if the file system was working as
-it should. If you find yourself in spooky file system land, it might
-help you find your way out again. This is the fs-test.c source:</p>
-
-<pre>
-/*
- * Some tests to check the file system sematics. Used to verify that
- * CIFS from a windows server do not work properly as a linux home
- * directory.
- * License: GPL v2 or later
- *
- * needs libsqlite3-dev and build-essential installed
- * compile with: gcc -Wall -lsqlite3 -DTEST_SQLITE fs-test.c -o fs-test
-*/
-
-#define _FILE_OFFSET_BITS 64
-#define _LARGEFILE_SOURCE 1
-#define _LARGEFILE64_SOURCE 1
-
-#define _GNU_SOURCE /* for asprintf() */
-
-#include <errno.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-#include <sys/file.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#ifdef TEST_SQLITE
-/*
- * Test sqlite open, as done by gcompris require the libsqlite3-dev
- * package and linking with -lsqlite3. A more low level test is
- * below.
- * See also <URL: http://www.sqlite.org./faq.html#q5 >.
- */
-#include <sqlite3.h>
-#define CREATE_TABLE_USERS \
- "CREATE TABLE users (user_id INT UNIQUE, login TEXT, lastname TEXT, firstname TEXT, birthdate TEXT, class_id INT ); "
-int test_sqlite_open(void) {
- char *zErrMsg;
- char *name = "testsqlite.db";
- sqlite3 *db=NULL;
- unlink(name);
- int rc = sqlite3_open(name, &db);
- if( rc ){
- printf("error: sqlite open of %s failed: %s\n", name, sqlite3_errmsg(db));
- sqlite3_close(db);
- return -1;
- }
-
- /* create tables */
- rc = sqlite3_exec(db,CREATE_TABLE_USERS, NULL, 0, &zErrMsg);
- if( rc != SQLITE_OK ){
- printf("error: sqlite table create failed: %s\n", zErrMsg);
- sqlite3_close(db);
- return -1;
- }
- printf("info: sqlite worked\n");
- sqlite3_close(db);
- return 0;
-}
-#endif /* TEST_SQLITE */
-
-/*
- * Demonstrate locking issue found in gcompris using sqlite3. This
- * work with ext3, but not with cifs server on Windows 2003. This is
- * done in the sqlite3 library.
- * See also
- * <URL:http://www.cygwin.com/ml/cygwin/2001-08/msg00854.html> and the
- * POSIX specification
- * <URL:http://www.opengroup.org/onlinepubs/009695399/functions/fcntl.html>.
- */
-int test_gcompris_locking(void) {
- struct flock fl;
- char *name = "testsqlite.db";
- unlink(name);
- int fd = open(name, O_RDWR|O_CREAT|O_LARGEFILE, 0644);
- printf("info: testing fcntl locking\n");
-
- fl.l_whence = SEEK_SET;
- fl.l_pid = getpid();
- printf(" Read-locking 1 byte from 1073741824");
- fl.l_start = 1073741824;
- fl.l_len = 1;
- fl.l_type = F_RDLCK;
- if (0 != fcntl(fd, F_SETLK, &fl) ) printf(" - error!\n"); else printf("\n");
-
- printf(" Read-locking 510 byte from 1073741826");
- fl.l_start = 1073741826;
- fl.l_len = 510;
- fl.l_type = F_RDLCK;
- if (0 != fcntl(fd, F_SETLK, &fl) ) printf(" - error!\n"); else printf("\n");
-
- printf(" Unlocking 1 byte from 1073741824");
- fl.l_start = 1073741824;
- fl.l_len = 1;
- fl.l_type = F_UNLCK;
- if (0 != fcntl(fd, F_SETLK, &fl) ) printf(" - error!\n"); else printf("\n");
-
- printf(" Write-locking 1 byte from 1073741824");
- fl.l_start = 1073741824;
- fl.l_len = 1;
- fl.l_type = F_WRLCK;
- if (0 != fcntl(fd, F_SETLK, &fl) ) printf(" - error!\n"); else printf("\n");
-
- printf(" Write-locking 510 byte from 1073741826");
- fl.l_start = 1073741826;
- fl.l_len = 510;
- if (0 != fcntl(fd, F_SETLK, &fl) ) printf(" - error!\n"); else printf("\n");
-
- printf(" Unlocking 2 byte from 1073741824");
- fl.l_start = 1073741824;
- fl.l_len = 2;
- fl.l_type = F_UNLCK;
- if (0 != fcntl(fd, F_SETLK, &fl) ) printf(" - error!\n"); else printf("\n");
-
- close(fd);
- return 0;
-}
-
-/*
- * Test if permissions of freshly created directories allow entries
- * below them. This was a problem with OpenOffice.org and gcompris.
- * Mounting with option 'sync' seem to solve this problem while
- * slowing down file operations.
- */
-int test_subdirectory_creation(void) {
-#define LEVELS 5
- char *path = strdup("test");
- char *dirs[LEVELS];
- int level;
- printf("info: testing subdirectory creation\n");
- for (level = 0; level < LEVELS; level++) {
- char *newpath = NULL;
- if (-1 == mkdir(path, 0777)) {
- printf(" error: Unable to create directory '%s': %s\n",
- path, strerror(errno));
- break;
- }
- asprintf(&newpath, "%s/%s", path, "test");
- free(path);
- path = newpath;
- }
- return 0;
-}
-
-/*
- * Test if symlinks can be created. This was a problem detected with
- * KDE.
- */
-int test_symlinks(void) {
- printf("info: testing symlink creation\n");
- unlink("symlink");
- if (-1 == symlink("file", "symlink"))
- printf(" error: Unable to create symlink\n");
- return 0;
-}
-
-int main(int argc, char **argv) {
- printf("Testing POSIX/Unix sematics on file system\n");
- test_symlinks();
- test_subdirectory_creation();
-#ifdef TEST_SQLITE
- test_sqlite_open();
-#endif /* TEST_SQLITE */
- test_gcompris_locking();
- return 0;
-}
-</pre>
-
-<p>When everything is working, it should print something like
-this:</p>
-
-<pre>
-Testing POSIX/Unix sematics on file system
-info: testing symlink creation
-info: testing subdirectory creation
-info: sqlite worked
-info: testing fcntl locking
- Read-locking 1 byte from 1073741824
- Read-locking 510 byte from 1073741826
- Unlocking 1 byte from 1073741824
- Write-locking 1 byte from 1073741824
- Write-locking 510 byte from 1073741826
- Unlocking 2 byte from 1073741824
-</pre>
-
-<p>I do not remember the exact details of the problems we saw, but one
-of them was with locking, where if I remember correctly, POSIX allow a
-read-only lock to be upgraded to a read-write lock without unlocking
-the read-only lock (while Windows do not). Another was a bug in the
-CIFS/SMB client implementation in the Linux kernel where directory
-meta information would be wrong for a fraction of a second, making
-OpenOffice.org fail to create its deep directory tree because it was
-not allowed to create files in its freshly created directory.</p>
-
-<p>Anyway, here is a nice tool for your tool box, might you never need
-it. :)</p>
+<p>With this weeks lawless
+<a href="http://www.salon.com/news/opinion/glenn_greenwald/2010/12/06/wikileaks/index.html">governmental
+attacks</a> on Wikileak and
+<a href="http://www.salon.com/technology/dan_gillmor/2010/12/06/war_on_speech">free
+speech</a>, it has become obvious that PayPal, visa and mastercard can
+not be trusted to handle money transactions.
+A blog post from
+<a href="http://webmink.com/2010/12/06/now-accepting-bitcoin/">Simon
+Phipps on bitcoin</a> reminded me about a project that a friend of
+mine mentioned earlier. I decided to follow Simon's example, and get
+involved with <a href="http://www.bitcoin.org/">BitCoin</a>. I got
+some help from my friend to get it all running, and he even handed me
+some bitcoins to get started. I even donated a few bitcoins to Simon
+for helping me remember BitCoin.</p>
+
+<p>So, what is bitcoins, you probably wonder? It is a digital
+crypto-currency, decentralised and handled using peer-to-peer
+networks. It allows anonymous transactions and prohibits central
+control over the transactions, making it impossible for governments
+and companies alike to block donations and other transactions. The
+source is free software, and while the key dependency wxWidgets 2.9
+for the graphical user interface is missing in Debian, the command
+line client builds just fine. Hopefully Jonas
+<a href="http://bugs.debian.org/578157">will get the package into
+Debian</a> soon.</p>
+
+<p>Bitcoins can be converted to other currencies, like USD and EUR.
+There are <a href="http://www.bitcoin.org/trade">companies accepting
+bitcoins</a> when selling services and goods, and there are even
+currency "stock" markets where the exchange rate is decided. There
+are not many users so far, but the concept seems promising. If you
+want to get started and lack a friend with any bitcoins to spare,
+you can even get
+<a href="https://freebitcoins.appspot.com/">some for free</a> (0.05
+bitcoin at the time of writing). Use
+<a href="http://www.bitcoinwatch.com/">BitcoinWatch</a> to keep an eye
+on the current exchange rates.</p>
+
+<p>As an experiment, I have decided to set up bitcoind on one of my
+machines. If you want to support my activity, please send Bitcoin
+donations to the address
+<b>15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</b>. Thank you!</p>
</div>
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/bitcoin">bitcoin</a>, <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern</a>, <a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet</a>.
</div>
</div>
<div class="padding"></div>
<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/Autodetecting_Client_setup_for_roaming_workstations_in_Debian_Edu.html">Autodetecting Client setup for roaming workstations in Debian Edu</a></div>
- <div class="date">2010-08-07 14:45</div>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/Martin_Bekkelund__En_stille_b__nn_om_Datalagringsdirektivet.html">Martin Bekkelund: En stille bønn om Datalagringsdirektivet</a></div>
+ <div class="date">2010-12-09 21:25</div>
<div class="body">
-<p>A few days ago, I
-<a href="http://people.skolelinux.org/pere/blog/Debian_Edu_roaming_workstation___at_the_university_of_Oslo.html">tried
-to install</a> a Roaming workation profile from Debian Edu/Squeeze
-while on the university network here at the University of Oslo, and
-noticed how much had to change to get it operational using the
-university infrastructure. It was fairly easy, but it occured to me
-that Debian Edu would improve a lot if I could get the client to
-connect without any changes at all, and thus let the client configure
-itself during installation and first boot to use the infrastructure
-around it. Now I am a huge step further along that road.</p>
-
-<p>With our current squeeze-test packages, I can select the roaming
-workstation profile and get a working laptop connecting to the
-university LDAP server for user and group and our active directory
-servers for Kerberos authentication. All this without any
-configuration at all during installation. My users home directory got
-a bookmark in the KDE menu to mount it via SMB, with the correct URL.
-In short, openldap and sssd is correctly configured. In addition to
-this, the client look for http://wpad/wpad.dat to configure a web
-proxy, and when it fail to find it no proxy settings are stored in
-/etc/environment and /etc/apt/apt.conf. Iceweasel and KDE is
-configured to look for the same wpad configuration and also do not use
-a proxy when at the university network. If the machine is moved to a
-network with such wpad setup, it would automatically use it when DHCP
-gave it a IP address.</p>
-
-<p>The LDAP server is located using DNS, by first looking for the DNS
-entry ldap.$domain. If this do not exist, it look for the
-_ldap._tcp.$domain SRV records and use the first one as the LDAP
-server. Next, it connects to the LDAP server and search all
-namingContexts entries for posixAccount or posixGroup objects, and
-pick the first one as the LDAP base. For Kerberos, a similar
-algorithm is used to locate the LDAP server, and the realm is the
-uppercase version of $domain.</p>
-
-<p>So, what is not working, you might ask. SMB mounting my home
-directory do not work. No idea why, but suspected the incorrect
-Kerberos settings in /etc/krb5.conf and /etc/samba/smb.conf might be
-the cause. These are not properly configured during installation, and
-had to be hand-edited to get the correct Kerberos realm and server,
-but SMB mounting still do not work. :(</p>
-
-<p>With this automatic configuration in place, I expect a Debian Edu
-roaming profile installation would be able to automatically detect and
-connect to any site using LDAP and Kerberos for NSS directory and PAM
-authentication. It should also work out of the box in a Active
-Directory environment providing posixAccount and posixGroup objects
-with UID and GID values.</p>
-
-<p>If you want to help out with implementing these things for Debian
-Edu, please contact us on debian-edu@lists.debian.org.</p>
+<p><a href="http://www.bekkelund.net/">Martin Bekkelund</a> ved
+<a href="http://www.friprog.no/">friprog-senteret</a> har skrevet
+følgende
+<a href="http://www.bekkelund.net/2010/12/09/en-stille-bonn/">korte
+oppsummering</a> rundt datalagringsdirektivet, som jeg videreformidler
+her.</p>
+
+<p><blockquote><strong>Det pågår i disse dager en intens diskusjon om
+innføring av Datalagringsdirektivet (<acronym
+title="Datalagringsdirektivet">DLD</acronym>) i norsk rett. Kanskje
+har du gjort deg opp en mening, kanskje er du usikker. I begge
+tilfeller ber jeg deg lese videre.</strong></p>
+
+<p>Samtlige fagmiljøer, både i Norge og EU, har konkludert med at
+<acronym title="Datalagringsdirektivet">DLD</acronym> ikke bør
+innføres på nåværende tidspunkt. Den tekniske kvaliteten på direktivet
+er dårlig, det griper uforholdsmessig inn i personvernet, det har
+store mangler og viktige spørsmål som hvem som skal ha tilgang og
+hvordan data skal lagres er fortsatt uavklart.</p>
+
+<ul>
+<li><a href="http://ikt-norge.no/norge-kan-slippe-datalagringsdirektivet/">EU-ekspertene sier</a> at konsekvensene av å benytte vetoretten er minimale</li>
+<li><a href="http://www.regjeringen.no/pages/2281080/Deninternasjonalejuristkommisjon.pdf">Juristene påpeker</a> at direktivet er i strid med EMK</li>
+<li><a href="http://www.dagbladet.no/2010/12/06/kultur/debatt/kronikk/dld/personvern/14594699/">Datatilsynet sier</a> direktivet får store konsekvenser for personvernet og at direktivet er irreversibelt</li>
+<li><a href="http://www.bekkelund.net/?s=dld">Teknologene sier</a> at sikker lagring ikke er mulig, at det er svært enkelt å omgå og mulig å manipulere data og produsere falske beviser</li>
+<li><a href="http://www.regjeringen.no/pages/2281080/NJ_247460_1_P.pdf">Pressen sier</a> nei av hensyn til kildevernet</li>
+<li>Det er store <a href="http://tetzschner.blogspot.com/2010/03/den-tyske-forfatningsdomstol.html">interne</a> <a href="http://stoppdld.no/2010/03/02/datalagring-stoppet-av-tysk-forfatningsdomstol/">stridigheter</a> i EU. Blant annet har den tyske forfatningsdomstolen funnet at måten <acronym title="Datalagringsdirektivet">DLD</acronym> er innført på er i strid med tysk grunnlov</li>
+<li>Alle de store <a href="http://www.bekkelund.net/2010/12/08/lokasjonsdata-og-datalagringsdirektivet/">operatørene og tilbyderne sier nei</a>, av tekniske og personvernmessige årsaker</li>
+</ul>
+
+<p>Jeg liker å tro at jeg er en hyggelig fyr. Jeg har et rent
+rulleblad, og med unntak av to fartsbøter har jeg aldri vært en byrde
+for samfunnet. Det akter jeg å fortsette med. Det er mange som meg,
+lovlydige, pliktoppfyllende borgere som aldri vil utgjøre en trussel
+mot noe som helst. Vi synes derfor det er trist og sårende at all vår
+atferd skal overvåkes døgnkontinuerlig.</p>
+
+<p><strong>Understøttet av faglige vurderinger kan du trygt si nei til
+<acronym title="Datalagringsdirektivet">DLD</acronym>.</strong></p>
+
+<p><a href="http://www.bekkelund.net/kontakt/">Ta kontakt med meg</a>
+hvis du har spørsmål om <acronym
+title="Datalagringsdirektivet">DLD</acronym>, uansett hva det måtte
+gjelde.</p>
+
+<p class="info">Denne teksten er å anse som <a
+href="http://creativecommons.org/licenses/publicdomain/"><em>Public
+Domain</em></a>. Spre den videre til alle som kan ha nytte av
+den!</p>
+</blockquote></p>
+
+<p>Siste <a href="http://www.nettavisen.no/it/article3043918.ece">melding
+fra Nettavisen</a> er at regjeringen planlegger å fremme sitt forslag
+til implementering av datalagringsdirektivet i morgen, i ly av
+fredprisutdelingen for å få minst mulig pressedekning om saken. Vi
+får snart se om det stemmer.</p>
</div>
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>, <a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern</a>.
</div>
</div>
<div class="padding"></div>
<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/Debian_Edu_roaming_workstation___at_the_university_of_Oslo.html">Debian Edu roaming workstation - at the university of Oslo</a></div>
- <div class="date">2010-08-03 23:30</div>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/Student_group_continue_the_work_on_my_Reprap_3D_printer.html">Student group continue the work on my Reprap 3D printer</a></div>
+ <div class="date">2010-12-09 19:30</div>
<div class="body">
-<p>The new roaming workstation profile in Debian Edu/Squeeze is fairly
-similar to the laptop setup am I working on using Ubuntu for the
-University of Oslo, and just for the heck of it, I tested today how
-hard it would be to integrate that profile into the university
-infrastructure. In this case, it is the university LDAP server,
-Active Directory Kerberos server and SMB mounting from the Netapp file
-servers.</p>
-
-<p>I was pleasantly surprised that the only three files needed to be
-changed (/etc/sssd/sssd.conf, /etc/ldap.conf and
-/etc/mklocaluser.d/20-debian-edu-config) and one file had to be added
-(/usr/share/perl5/Debian/Edu_Local.pm), to get the client working.
-Most of the changes were to get the client to use the university LDAP
-for NSS and Kerberos server for PAM, but one was to change a hard
-coded DNS domain name in the mklocaluser hook from .intern to
-.uio.no.</p>
-
-<p>This testing was so encouraging, that I went ahead and adjusted the
-Debian Edu scripts and setup in subversion to centralise the roaming
-workstation setup a bit more and avoid the hardcoded DNS domain name,
-so that when I test this tomorrow, I expect to get away with modifying
-only /etc/sssd/sssd.conf and /etc/ldap.conf to get it to use the
-university servers.</p>
-
-<p>My goal is to get the clients to have no hardcoded settings and
-fetch all their initial setup during installation and first boot, to
-allow them to be inserted also into environments where the default
-setup in Debian Edu has been changed or as with the university, where
-the environment is different but provides the protocols Debian Edu
-uses.</p>
+<p>A few days ago, I was introduces to some students in the robot
+student assosiation <a href="http://www.robotica.no/">Robotica
+Osloensis</a> at the University of Oslo where I work, who planned to
+get their own 3D printer. They wanted to learn from me based on my
+work in the area. After having a short lunch meeting with them, I
+offered them to borrow my reprap kit, as I never had time to complete
+the build and this seem unlike to change any time soon. I look
+forward to see how this goes. This monday their volunteer driver
+picked up my kit and drove it to their lab, and tomorrow I am told the
+last exam is over so they can start work on getting the 3D printer
+operational.</p>
+
+<p>The robotic group have already build several robots on their own,
+and seem capable of getting the reprap operational. I really look
+forward to being able to print all the cool 3D designs published on
+<a href="http://www.thingiverse.com/">Thingiverse</a>. I even got
+some 3D scans I got made during Dagen@IFI when one of the groups at
+the computer science department at the university demonstrated their
+very cool 3D scanner.</p>
</div>
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/reprap">reprap</a>.
</div>
</div>
<div class="padding"></div>
<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/Circular_package_dependencies_harms_apt_recovery.html">Circular package dependencies harms apt recovery</a></div>
- <div class="date">2010-07-27 23:50</div>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/Debian_Edu_development_gathering_and_General_Assembly_for_FRiSK.html">Debian Edu development gathering and General Assembly for FRiSK</a></div>
+ <div class="date">2010-11-29 18:40</div>
<div class="body">
-<p>I discovered this while doing
-<a href="http://people.skolelinux.org/pere/blog/Automatic_upgrade_testing_from_Lenny_to_Squeeze.html">automated
-testing of upgrades from Debian Lenny to Squeeze</a>. A few packages
-in Debian still got circular dependencies, and it is often claimed
-that apt and aptitude should be able to handle this just fine, but
-some times these dependency loops causes apt to fail.</p>
-
-<p>An example is from todays
-<a href="http://people.skolelinux.org/~pere/debian-upgrade-testing//test-20100727-lenny-squeeze-kde-aptitude.txt">upgrade
-of KDE using aptitude</a>. In it, a bug in kdebase-workspace-data
-causes perl-modules to fail to upgrade. The cause is simple. If a
-package fail to unpack, then only part of packages with the circular
-dependency might end up being unpacked when unpacking aborts, and the
-ones already unpacked will fail to configure in the recovery phase
-because its dependencies are unavailable.</p>
-
-<p>In this log, the problem manifest itself with this error:</p>
-
-<blockquote><pre>
-dpkg: dependency problems prevent configuration of perl-modules:
- perl-modules depends on perl (>= 5.10.1-1); however:
- Version of perl on system is 5.10.0-19lenny2.
-dpkg: error processing perl-modules (--configure):
- dependency problems - leaving unconfigured
-</pre></blockquote>
-
-<p>The perl/perl-modules circular dependency is already
-<a href="http://bugs.debian.org/527917">reported as a bug</a>, and will
-hopefully be solved as soon as possible, but it is not the only one,
-and each one of these loops in the dependency tree can cause similar
-failures. Of course, they only occur when there are bugs in other
-packages causing the unpacking to fail, but it is rather nasty when
-the failure of one package causes the problem to become worse because
-of dependency loops.</p>
-
-<p>Thanks to
-<a href="http://lists.debian.org/debian-devel/2010/06/msg00116.html">the
-tireless effort by Bill Allombert</a>, the number of circular
-dependencies
-<a href="http://debian.semistable.com/debgraph.out.html">left in Debian
-is dropping</a>, and perhaps it will reach zero one day. :)</p>
-
-<p>Todays testing also exposed a bug in
-<a href="http://bugs.debian.org/590605">update-notifier</a> and
-<a href="http://bugs.debian.org/590604">different behaviour</a> between
-apt-get and aptitude, the latter possibly caused by some circular
-dependency. Reported both to BTS to try to get someone to look at
-it.</p>
+<p>On friday, the first Debian Edu / Skolelinux
+<a href="http://www.friprogramvareiskolen.no/Gathering/2010-12-03-05-Oslo">development
+gathering</a> in a long time take place here in Oslo, Norway. I
+really look forward to seeing all the good people working on the
+Squeeze release. The gathering is open for everyone interested in
+learning more about Debian Edu / Skolelinux.</p>
+
+<p>On Saturday, the Norwegian member organization taking care of
+organizing these development gatherings, Fri Programvare i Skolen,
+will hold its
+<a href="http://friprogramvareiskolen.no/Genfors/2010">General Assembly
+for 2010</a>. Membership is open for all, and currently there are 388
+people registered as members. Last year 32 members cast their vote in
+the memberdb based election system. I hope more people find time to
+vote this year.</p>
</div>
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian
">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian
edu">debian edu</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>.
</div>
</div>
<div class="padding"></div>
<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/First_Debian_Edu_test_release__alpha0__based_on_Squeeze_is_released.html">First Debian Edu test release (alpha0) based on Squeeze is released</a></div>
- <div class="date">2010-07-27 17:45</div>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/Why_isn_t_Debian_Edu_using_VLC_.html">Why isn't Debian Edu using VLC?</a></div>
+ <div class="date">2010-11-27 11:30</div>
<div class="body">
-<p>I just posted this announcement culminating several months of work
-with the next Debian Edu release. Not nearly done, but one major step
-completed.</p>
-
-<blockquote>
-<p>This is the first test release based on Squeeze. The focus of this
-release is to test the user application selection. To have a look,
-install the standalone profile and let the developers know if the set
-of installed packages i.e. applications should be modified. If some
-user application is missing, or if there are some applications that no
-longer make sense to be included in Debian Edu, please let us know.
-Also, if a useful application is missing the translation for your
-language of choice, please let us know too.</p>
-
-<p>In addition, feedback and help to polish the desktop (menus,
-artwork, starters, etc.) is appreciated. We would like to ship a nice
-and handy KDE4 desktop targeted for schools out of the box.</p>
-
-<p>The other profiles should be installable, but there is a lot more
-work left to be done before they are ready, so do not expect to
-much.</p>
-
-<p>Changes compared to the lenny based version</p>
-
-<ul>
-<li>Everything from Debian Squeeze
-<ul>
- <li>Desktop environment KDE 4.4 => the new KDE desktop in
- combination with some new artwork
- <li>Web browser Iceweasel 3.5
- <li>OpenOffice.org 3.2
- <li>Educational toolbox GCompris 9.3
- <li>Music creator Rosegarden 10.04.2
- <li>Image editor Gimp 2.6.10
- <li>Virtual universe Celestia 1.6.0
- <li>Virtual stargazer Stellarium 0.10.4
- <li>3D modeler Blender 2.49.2 (new application)
- <li>Video editor Kdenlive 0.7.7 (new application)
-</ul></li>
-<li>Now using Kerberos for password checking (migration not finished).
- Enabled for:
-<ul>
- <li>PAM
- <li>LDAP
- <li>IMAP
- <li>SMTP (sender verification)
-</ul>
-</li>
-<li>New experimental roaming workstation profile for laptops.</li>
-<li>Show welcome page to users when they first log in. The URL is
- fetched from LDAP.</li>
-<li>New LXDE desktop option, in addition to KDE (default) and Gnome.</li>
-<li>General cleanup (not finished)</li>
-</ul>
-<p>The following features are not working as they should</p>
-
-<ul>
-<li>No web based administration tool for creating users and groups. The
- scripts ldap-createuser-krb and ldap-add-user-to-group can be used
- for testing.</li>
-<li>DVD installs are missing debian-installer images for the PXE boot,
- and do not set up the PXE menu on eth0 because of this. LTSP
- clients should still boot from eth1 on thin client servers.</li>
-<li>The restructured KDE menu is not implemented.</li>
-<li>The LDAP server setup need to be reviewed for security.</li>
-<li>The LDAP directory structure need to be reworked.</li>
-<li>Different sets of packages are installed when using the DVD and the
- netinst CD. More packages are installed using the netinst CD.</li>
-<li>The jackd package fail to install. This is believed to be caused by
- some ongoing transition, and hopefully should be solved soon. The
- jackd1 package can be installed manually for those that need it.</li>
-<li>Some packages lack translations. See
- http://wiki.debian.org/DebianEdu/Status/Squeeze for updated status,
- and help out with translations.</li>
-</ul>
-
-<p>To download this multiarch netinstall release you can use</p>
-
-<ul>
-<li><a href="ftp://ftp.skolelinux.org/skolelinux-cd/squeeze-alpha/debian-edu-6.0.0+edua0-CD.iso">ftp://ftp.skolelinux.org/skolelinux-cd/squeeze-alpha/debian-edu-6.0.0+edua0-CD.iso</a></li>
-<li><a href="http://ftp.skolelinux.org/skolelinux-cd/squeeze-alpha/debian-edu-6.0.0+edua0-CD.iso">http://ftp.skolelinux.org/skolelinux-cd/squeeze-alpha/debian-edu-6.0.0+edua0-CD.iso</a></li>
-<li>rsync -avzP ftp.skolelinux.org::skolelinux-cd/squeeze-alpha/debian-edu-6.0.0+edua0-CD.iso</li>
-</ul>
-<p>To download this multiarch dvd release you can use</p>
-
-<ul>
-<li><a href="ftp://ftp.skolelinux.org/skolelinux-cd/squeeze-alpha/debian-edu-6.0.0+edua0-DVD.iso">ftp://ftp.skolelinux.org/skolelinux-cd/squeeze-alpha/debian-edu-6.0.0+edua0-DVD.iso</a></li>
-<li><a href="http://ftp.skolelinux.org/skolelinux-cd/squeeze-alpha/debian-edu-6.0.0+edua0-DVD.iso">http://ftp.skolelinux.org/skolelinux-cd/squeeze-alpha/debian-edu-6.0.0+edua0-DVD.iso</a></li>
-<li>rsync -avzP ftp.skolelinux.org::skolelinux-cd/squeeze-alpha/debian-edu-6.0.0+edua0-DVD.iso</li>
-</ul>
-
-<p>There is no source DVD available yet. It will be prepared when we
-get closer to the final release.</p>
-
-<p>The MD5SUM of these images are</p>
-
-<ul>
-<li>3dbf45d59f42a53518b6e3c9ec3b5eb6 debian-edu-6.0.0+edua0-CD.iso</li>
-<li>22f2cbfce281d1c6e478be452638675d debian-edu-6.0.0+edua0-DVD.iso</li>
-</ul>
-
-<p>The SHA1SUM of these images are</p>
-<ul>
-<li>c53d1b69b40cf37cd27aefaf33f6f6a3821bedf0 debian-edu-6.0.0+edua0-CD.iso</li>
-<li>2ec29d7db676d59d32197b05c277ffe16348376c debian-edu-6.0.0+edua0-DVD.iso</li>
-</ul>
-<p>How to report bugs:
-http://wiki.debian.org/DebianEdu/HowTo/ReportBugsInBugzilla</p>
-
-<p>Please direct replies to debian-edu@lists.debian.org</p>
-</blockquote>
+<p>In the latest issue of Linux Journal, the readers choices were
+presented, and the winner among the multimedia player were VLC.
+Personally, I like VLC, and it is my player of choice when I first try
+to play a video file or stream. Only if VLC fail will I drag out
+gmplayer to see if it can do better. The reason is mostly the failure
+model and trust. When VLC fail, it normally pop up a error message
+reporting the problem. When mplayer fail, it normally segfault or
+just hangs. The latter failure mode drain my trust in the program.<p>
+
+<p>But even if VLC is my player of choice, we have choosen to use
+mplayer in <a href="http://www.skolelinux.org/">Debian
+Edu/Skolelinux</a>. The reason is simple. We need a good browser
+plugin to play web videos seamlessly, and the VLC browser plugin is
+not very good. For example, it lack in-line control buttons, so there
+is no way for the user to pause the video. Also, when I
+<a href="http://wiki.debian.org/DebianEdu/BrowserMultimedia">last
+tested the browser plugins</a> available in Debian, the VLC plugin
+failed on several video pages where mplayer based plugins worked. If
+the browser plugin for VLC was as good as the gecko-mediaplayer
+package (which uses mplayer), we would switch.</P>
+
+<p>While VLC is a good player, its user interface is slightly
+annoying. The most annoying feature is its inconsistent use of
+keyboard shortcuts. When the player is in full screen mode, its
+shortcuts are different from when it is playing the video in a window.
+For example, space only work as pause when in full screen mode. I
+wish it had consisten shortcuts and that space also would work when in
+window mode. Another nice shortcut in gmplayer is [enter] to restart
+the current video. It is very nice when playing short videos from the
+web and want to restart it when new people arrive to have a look at
+what is going on.</p>
</div>
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia</a>, <a href="http://people.skolelinux.org/pere/blog/tags/video">video</a>, <a href="http://people.skolelinux.org/pere/blog/tags/web">web</a>.
</div>
</div>
<div class="padding"></div>
<div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/One_step_closer_to_single_signon_in_Debian_Edu.html">One step closer to single signon in Debian Edu</a></div>
- <div class="date">2010-07-25 10:00</div>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/DND_hedrer_overv__kning_av_barn_med_Rosingsprisen.html">DND hedrer overvåkning av barn med Rosingsprisen</a></div>
+ <div class="date">2010-11-23 14:15</div>
<div class="body">
-<p>The last few months me and the other Debian Edu developers have
-been working hard to get the Debian/Squeeze based version of Debian
-Edu/Skolelinux into shape. This future version will use Kerberos for
-authentication, and services are slowly migrated to single signon,
-getting rid of password questions one at the time.</p>
-
-<p>It will also feature a roaming workstation profile with local home
-directory, for laptops that are only some times on the Skolelinux
-network, and for this profile a shortcut is created in Gnome and KDE
-to gain access to the users home directory on the file server. This
-shortcut uses SMB at the moment, and yesterday I had time to test if
-SMB mounting had started working in KDE after we added the cifs-utils
-package. I was pleasantly surprised how well it worked.</p>
-
-<p>Thanks to the recent changes to our samba configuration to get it
-to use Kerberos for authentication, there were no question about user
-password when mounting the SMB volume. A simple click on the shortcut
-in the KDE menu, and a window with the home directory popped
-up. :)</p>
-
-<p>One step closer to a single signon solution out of the box in
-Debian Edu. We already had PAM, LDAP, IMAP and SMTP in place, and now
-also Samba. Next step is Cups and hopefully also NFS.</p>
-
-<p>We had planned a alpha0 release of Debian Edu for today, but thanks
-to the autobuilder administrators for some architectures being slow to
-sign packages, we are still missing the fixed LTSP package we need for
-the release. It was uploaded three days ago with urgency=high, and if
-it had entered testing yesterday we would have been able to test it in
-time for a alpha0 release today. As the binaries for ia64 and powerpc
-still not uploaded to the Debian archive, we need to delay the alpha
-release another day.</p>
-
-<p>If you want to help out with implementing Kerberos for Debian Edu,
-please contact us on debian-edu@lists.debian.org.</p>
+<p>Jeg registrerer med vond smak i munnen at Den Norske Dataforening
+<a
+href="http://www.dataforeningen.no/hedret-med-rosingprisen.4849070-133913.html">hedrer
+overvåkning av barn med Rosingsprisen for kreativitet i år</a>. Jeg
+er glad jeg nå er meldt ut av DND.</p>
+
+<p>Å elektronisk overvåke sine barn er ikke å gjøre dem en tjeneste,
+men et overgrep mot individer i utvikling som bør læres opp til å ta
+egne valg.</p>
+
+<p>For å sitere Datatilsynets nye leder, Bjørn Erik Thon, i
+<a href="http://www.idg.no/computerworld/article174262.ece">et intervju
+med Computerworld Norge</A>:</p>
+
+<p><blockquote>
+- For alle som har barn, meg selv inkludert, er førstetanken at det
+hadde vært fint å vite hvor barnet sitt er til enhver tid. Men ungene
+har ikke godt av det. De er små individer som skal søke rundt og finne
+sine små gjemmesteder og utvide horisonten, uten at foreldrene ser dem
+i kortene. Det kan være fristende, men jeg ville ikke gått inn i
+dette.
+</blockquote></p>
+
+<p>Det er skremmende å se at DND mener en tjeneste som legger opp til
+slike overgrep bør hedres. Å flytte oppveksten for barn inn i en
+virtuell
+<a href="http://en.wikipedia.org/wiki/Panopticon">Panopticon</a> er et
+grovt overgrep og vil gjøre skade på barnenes utvikling, og foreldre
+burde tenke seg godt om før de gir etter for sine instinkter her.</p>
+
+<p>Blipper-tjenesten får meg til å tenke på bøkene til
+<a href="http://en.wikipedia.org/wiki/John_Twelve_Hawks">John Twelve
+Hawks</a>, som forbilledlig beskriver hvordan et totalitært
+overvåkningssamfunn bygges sakte men sikkert rundt oss, satt sammen av
+gode intensjoner og manglende bevissthet om hvilke prinsipper et
+liberalt demokrati er fundamentert på. Jeg har hatt stor glede av å
+lese alle de tre bøkene.</p>
</div>
<div class="tags">
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/
debian edu">debian edu</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>, <a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/
norsk">norsk</a>, <a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern</a>, <a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet</a>.
</div>
</div>
<li><a href="http://people.skolelinux.org/pere/blog/archive/2010/07/">July (12)</a></li>
-<li><a href="http://people.skolelinux.org/pere/blog/archive/2010/08/">August (7)</a></li>
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2010/08/">August (13)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2010/09/">September (7)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2010/10/">October (9)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2010/11/">November (13)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2010/12/">December (7)</a></li>
</ul></li>
<h2>Tags</h2>
<ul>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer (11)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer (13)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/amiga">amiga (1)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/aros">aros (1)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/bitcoin">bitcoin (2)</a></li>
+
<li><a href="http://people.skolelinux.org/pere/blog/tags/bootsystem">bootsystem (10)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/debian">debian (35)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/debian">debian (46)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (40)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (53)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/english">english (56)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/english">english (77)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/fiksgatami">fiksgatami (1)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/fildeling">fildeling (8)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/fildeling">fildeling (11)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/kart">kart (3)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/kart">kart (5)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/ldap">ldap (8)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/lenker">lenker (2)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/lenker">lenker (4)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/ltsp">ltsp (1)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (5)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (11)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk (73)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk (94)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug (95)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug (114)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (14)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (18)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern (15)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern (31)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/reprap">reprap (10)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/reprap">reprap (11)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/robot">robot (2)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/robot">robot (4)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/rss">rss (1)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (11)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (22)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/sitesummary">sitesummary (3)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/standard">standard (13)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/standard">standard (16)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/stavekontroll">stavekontroll (1)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/video">video (10)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/video">video (16)</a></li>
<li><a href="http://people.skolelinux.org/pere/blog/tags/vitenskap">vitenskap (1)</a></li>
- <li><a href="http://people.skolelinux.org/pere/blog/tags/web">web (7)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/web">web (14)</a></li>
</ul>
projects / homepage.git / blobdiff