+ <div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/Second_beta_version_of_Debian_Edu___Skolelinux_based_on_Squeeze.html">Second beta version of Debian Edu / Skolelinux based on Squeeze</a>
+ </div>
+ <div class="date">
+ 7th January 2012
+ </div>
+ <div class="body">
+ <p>I am happy to announce that today we managed to wrap up and publish
+the second beta version of
+<a href="http://www.skolelinux.org/">Debian Edu / Skolelinux</a>. If
+you want to test a LDAP backed Kerberos server with out of the box PXE
+configuration for running diskless machines and installing new
+machines, check it out. If you need a software solution for your
+school, check it out too. The full announcement is
+<a href="http://lists.debian.org/debian-edu-announce/2012/01/msg00000.html">available</a>
+on the project announcement list.</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>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
+ <div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/Changing_the_default_Iceweasel_start_page_in_Debian_Edu_Squeeze.html">Changing the default Iceweasel start page in Debian Edu/Squeeze</a>
+ </div>
+ <div class="date">
+ 10th January 2012
+ </div>
+ <div class="body">
+ <p>In the Squeeze version of
+<a href="http://www.skolelinux.org/">Debian Edu / Skolelinux</a> soon
+to be released, users of the system will get their default browser
+start page set from LDAP, allowing the system administrator to point
+all users to the school web page by updating one setting in LDAP. In
+addition to setting the default start page when a machine boots, users
+are shown the same page as a welcome page when they log in for the
+first time.</p>
+
+<p>The LDAP object dc=skole,dc=skolelinux,dc=no have an attribute
+labeledURI with "http://www/ LDAP for Debian Edu/Skolelinux" as the
+default content. By changing this value to another URL, all users get
+to see the page behind this new URL.</p>
+
+<p>An easy way to update it is by using the ldapvi tool. It can be
+called as "<tt>ldapvi -ZD '(cn=admin)'</tt>' to update LDAP with the
+new setting.</p>
+
+<p>We have written the code to adjust the default start page and show
+the welcome page, and I wonder if there is an easier way to do this
+from within Iceweasel instead.</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/web">web</a>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
+ <div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/Setting_up_a_new_school_with_Debian_Edu_Squeeze.html">Setting up a new school with Debian Edu/Squeeze</a>
+ </div>
+ <div class="date">
+ 25th January 2012
+ </div>
+ <div class="body">
+ <p>The next version of <a href="http://www.skolelinux.org/">Debian Edu
+/ Skolelinux</a> will include a new tool
+<tt>sitesummary2ldapdhcp</tt>, which can be used to quickly set up all
+the computers in a school without much manual labour. Here is a short
+summary on how to use it to set up a new school.</p>
+
+<p>First, install a combined Main Server and Thin Client Server as the
+central server in the network. Next, PXE boot all the client machines
+as thin clients and wait 5 minutes after the last client booted to
+allow the clients to report their existence to the central server. When
+this is done, log on to the central server and run
+<tt>sitesummary2ldapdhcp -a</tt> in the <tt>konsole</tt> to use the
+collected information to generate system objects in LDAP. The output
+will look similar to this:</p>
+
+<p><blockquote><pre>
+% sitesummary2ldapdhcp -a
+info: Updating machine tjener.intern [10.0.2.2] id ether-00:01:02:03:04:05.
+info: Create GOsa machine for auto-mac-00-01-02-03-04-06 [10.0.16.20] id ether-00:01:02:03:04:06.
+
+Enter password if you want to activate these changes, and ^c to abort.
+
+Connecting to LDAP as cn=admin,ou=ldap-access,dc=skole,dc=skolelinux,dc=no
+enter password: *******
+%
+</pre></blockquote></p>
+
+<p>After providing the LDAP administrative password (the same as the
+root password set during installation), the LDAP database will be
+populated with system objects for each PXE booted machine with
+automatically generated names. The final step to set up the school is
+then to log into <a href="https://oss.gonicus.de/labs/gosa/">GOsa</a>,
+the web based user, group and system administration system to change
+system names, add systems to the correct host groups and finally
+enable DHCP and DNS for the systems. All clients that should be used
+as diskless workstations should be added to the workstation-hosts
+group. After this is done, all computers can be booted again via PXE
+and get their assigned names and group based configuration
+automatically.</p>
+
+<p>We plan to release beta3 with the updated version of this feature
+enabled this weekend. You might want to give it a try.</p>
+
+<p>Update 2012-01-28: When calling sitesummary2ldapdhcp to add new
+hosts, one need to add the option -a. I forgot to mention this in my
+original text, and have added it to the text now.</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/sitesummary">sitesummary</a>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
+ <div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/Handling_non_free_firmware_in_Debian_Edu_Squeeze.html">Handling non-free firmware in Debian Edu/Squeeze</a>
+ </div>
+ <div class="date">
+ 27th January 2012
+ </div>
+ <div class="body">
+ <p>With some computer hardware, one need non-free firmware blobs.
+This is the sad fact of todays computers. In the next version of
+<a href="http://www.skolelinux.org/">Debian Edu / Skolelinux</a> based
+on Squeeze, we provide several scripts and modifications to make
+firmware blobs easier to handle. The common use case I run into is a
+laptop with a wireless network card requiring non-free firmware to
+work, but there are other use cases as well.</p>
+
+<p>First and foremost, Debian Edu provide ISO images for DVD and CD
+with all firmware packages in the Debian sections main and non-free
+included, to ensure debian-installer find and can install all of them
+during installation. This take care firmware for network devices used
+by the installer when installing from from local media. But for
+example multimedia devices are not activated in the installer and are
+not taken care of by this.</p>
+
+<p>For non-network devices, we provide the script
+<tt>/usr/share/debian-edu-config/tools/auto-addfirmware</tt> which
+search through the <tt>dmesg</tt> output for drivers requesting extra
+firmware. The firmware file name is looked up in the Contents-ARCH.gz
+file available in the package repository, and the packages providing
+the requested firmware file(s) is installed. I have proposed to do
+something similar in debian-installer (BTS report
+<a href="http://bugs.debian.org/655507">#655507</a>), to allow PXE
+installs of Debian to handle firmware installation better. Run the
+script as root from the command line to fetch and install the needed
+firmware packages.</p>
+
+<p>Debian Edu provide PXE installation of Debian out of the box, and
+because some machines need firmware to get their network cards
+working, the installation initrd some times need extra firmware
+included to be able to install at all. To fill the PXE installation
+initrd with extra firmware, the
+<tt>/usr/share/debian-edu-config/tools/pxe-addfirmware</tt> script is
+provided. Again, just run it as root on the command line to fill the
+PXE initrd with firmware packages.</p>
+
+<p>Last, some LTSP clients might also need firmware to get their
+network cards working. For this,
+<tt>/usr/share/debian-edu-config/tools/ltsp-addfirmware</tt> is
+provided to update the LTSP initrd with firmware blobs. It is used
+the same way as the other firmware related tools.</p>
+
+<p>At the moment, we do not run any of these during installation. We
+do not know if this is acceptable for the local administrator to use
+non-free software, and it is their choice.</p>
+
+<p>We plan to release beta3 this weekend. You might want to give it a
+try.</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>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
+ <div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/Third_beta_version_of_Debian_Edu___Skolelinux_based_on_Squeeze.html">Third beta version of Debian Edu / Skolelinux based on Squeeze</a>
+ </div>
+ <div class="date">
+ 4th February 2012
+ </div>
+ <div class="body">
+ <p>I am happy to announce that finally we managed today to wrap up and
+publish the third beta version of
+<a href="http://www.skolelinux.org/">Debian Edu / Skolelinux</a> based
+on Squeeze. If you want to test a LDAP backed Kerberos server with
+out of the box PXE configuration for running diskless machines and
+installing new machines, check it out. If you need a software
+solution for your school, check it out too. The full announcement is
+<a href="http://lists.debian.org/debian-edu-announce/2012/02/msg00000.html">available</a>
+on the project announcement list.</p>
+
+<p>I am very happy to report these changes and improvements since
+beta2 (there are more, see announcement for full list):</p>
+
+<ul>
+
+<li>It is now possible to change the pre-configured IP subnet from
+ 10.0.0.0/8 to something else by using the subnet-change tool after
+ the installation.</li>
+
+<li>Too full partitions are now automatically extended on the Main
+ Server, based on the rules specified in /etc/fsautoresizetab.</li>
+
+<li>The CUPS queues are now automatically flushed every night, and all
+ disabled queues are restarted every hour. This should cut down on
+ the amount of manual administration needed for printers.</li>
+
+<li>The set of initial users have been changed. Now a personal user
+ for the local system administrator is created during installation
+ instead of the previously created localadmin and super-admin users,
+ and this user is granted administrative privileges using group
+ membership. This reduces the number of passwords one need to keep
+ up to date on the system.</li>
+
+</ul>
+
+<p>The new main server seem to work so well that I am testing it as my
+private DNS/LDAP/Kerberos/PXE/LTSP server at home. I will use it look
+for issues we could fix to polish Debian Edu even further before the
+final Squeeze release is published.</p>
+
+<p>Next weekend the project organise a
+<a href="http://lists.debian.org/debian-edu-announce/2012/01/msg00001.html">developer
+gathering</a> in Oslo. We will continue the work on the Squeeze
+version, and start initial planning for the Wheezy version. Perhaps I
+will see you there?</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>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
+ <div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/Saving_power_with_Debian_Edu___Skolelinux_using_shutdown_at_night.html">Saving power with Debian Edu / Skolelinux using shutdown-at-night</a>
+ </div>
+ <div class="date">
+ 5th February 2012
+ </div>
+ <div class="body">
+ <p>Since the Lenny version of
+<a href="http://www.skolelinux.org/">Debian Edu / Skolelinux</a>, a
+feature to save power have been included. It is as simple as it is
+practical: Shut down unused clients at night, and turn them on again
+in the morning. This is done using the
+<a href="http://packages.qa.debian.org/s/shutdown-at-night.html">shutdown-at-night</a> Debian package.</p>
+
+<p>To enable this feature on a client, the machine need to be added to
+the netgroup shutdown-at-night-hosts. For Debian Edu, this is done in
+LDAP, and once this is in place, the machine in question will check
+every hour from 16:00 until 06:00 to see if the machine is unused, and
+shut it down if it is. If the hardware in question is supported by
+the
+<a href="http://packages.qa.debian.org/n/nvram-wakeup.html">nvram-wakeup</a>
+package, the BIOS is told to turn the machine back on around 07:00 +-
+10 minutes. If this isn't working, one can configure wake-on-lan to
+try to turn on the client. The wake-on-lan option is only documented
+and not enabled by default in Debian Edu.</p>
+
+<p>It is important to not turn all machines on at once, as this can
+blow a fuse if several computers are connected to the same fuse like
+the common setup for a classroom. The nvram-wakeup method only work
+for machines with a functioning hardware/BIOS clock. I've seen old
+machines where the BIOS battery were dead and the hardware clock were
+starting from 0 (or was it 1990?) every boot. If you have one of
+those, you have to turn on the computer manually.</p>
+
+<p>The shutdown-at-night package is completely self contained, and can
+also be used outside the Debian Edu environment. For those without a
+central LDAP server with netgroups, one can instead touch the file
+<tt>/etc/shutdown-at-night/shutdown-at-night</tt> to enable it.
+Perhaps you too can use it to save some power?</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>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
+ <div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/Automatic_proxy_configuration_with_Debian_Edu___Skolelinux.html">Automatic proxy configuration with Debian Edu / Skolelinux</a>
+ </div>
+ <div class="date">
+ 13th February 2012
+ </div>
+ <div class="body">
+ <p>New in the Squeeze version of
+<a href="http://www.skolelinux.org/">Debian Edu / Skolelinux</a> is the
+ability for clients to automatically configure their proxy settings
+based on their environment. We want all systems on the client to use
+the WPAD based proxy definition fetched from <tt>http://wpad/wpad.dat</tt>, to
+allow sites to control the proxy setting from a central place and make
+sure clients do not have hard coded proxy settings. The schools can
+change the global proxy setting by editing
+<tt>tjener:/etc/debian-edu/www/wpad.dat</tt> and the change propagate
+to all Debian Edu clients in the network.</p>
+
+<p>The problem is that some systems do not understand the WPAD system.
+In other words, how do one get from a WPAD file like this (this is a
+simple one, they can run arbitrary code):</p>
+
+<blockquote><pre>
+function FindProxyForURL(url, host)
+{
+ if (!isResolvable(host) ||
+ isPlainHostName(host) ||
+ dnsDomainIs(host, ".intern"))
+ return "DIRECT";
+ else
+ return "PROXY webcache:3128; DIRECT";
+}
+</pre></blockquote>
+
+<p>to a proxy setting in the process environment looking like this:</p>
+
+<blockquote><pre>
+http_proxy=http://webcache:3128/
+ftp_proxy=http://webcache:3128/
+</pre></blockquote>
+
+<p>To do this conversion I developed a perl script that will execute
+the javascript fragment in the WPAD file and return the proxy that
+would be used for
+<tt><a href="http://www.debian.org/">http://www.debian.org/</a></tt>,
+and insert this extracted proxy URL in <tt>/etc/environment</tt> and
+<tt>/etc/apt/apt.conf</tt>. The perl script wpad-extract work just
+fine in Squeeze, but in Wheezy the library it need to run the
+javascript code is <a href="http://bugs.debian.org/631045">no longer
+able to build</a> because the C library it depended on is now a C++
+library. I hope someone find a solution to that problem before Wheezy
+is frozen. An alternative would be for us to rewrite wpad-extract to
+use some other javascript library currently working in Wheezy, but no
+known alternative is known at the moment.</p>
+
+<p>This automatic proxy system allow the roaming workstation (aka
+laptop) setup in Debian Edu/Squeeze to use the proxy when the laptop
+is connected to the backbone network in a Debian Edu setup, and to
+automatically use any proxy present and announced using the WPAD
+feature when it is connected to other networks. And if no proxy is
+announced, direct connections will be used instead.</p>
+
+<p>Silently using a proxy announced on the network might be a privacy
+or security problem. But those controlling DHCP and DNS on a network
+could just as easily set up a transparent proxy, and force all HTTP
+and FTP connections to use a proxy anyway, so I consider that
+distinction to be academic. If you are afraid of using the wrong
+proxy, you should avoid connecting to the network in question in the
+first place. In Debian Edu, the proxy setup is updated using dhcp and
+ifupdown hooks, to make sure the configuration is updated every time
+the network setup changes.</p>
+
+<p>The WPAD system is documented in a
+<a href="http://tools.ietf.org/html/draft-ietf-wrec-wpad-01">IETF
+draft</a> and a
+<a href="http://en.wikipedia.org/wiki/Web_Proxy_Autodiscovery_Protocol">Wikipedia
+page</a> for those that want to learn more.</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>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
+ <div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/How_to_figure_out_which_RAID_disk_to_replace_when_it_fail.html">How to figure out which RAID disk to replace when it fail</a>
+ </div>
+ <div class="date">
+ 14th February 2012
+ </div>
+ <div class="body">
+ <p>Once in a while my home server have disk problems. Thanks to Linux
+Software RAID, I have not lost data yet (but
+<a href="http://comments.gmane.org/gmane.linux.raid/34532">I was
+close</a> this summer :). But once a disk is starting to behave
+funny, a practical problem present itself. How to get from the Linux
+device name (like /dev/sdd) to something that can be used to identify
+the disk when the computer is turned off? In my case I have SATA
+disks with a unique ID printed on the label. All I need is a way to
+figure out how to query the disk to get the ID out.</p>
+
+<p>After fumbling a bit, I
+<a href="http://www.cyberciti.biz/faq/linux-getting-scsi-ide-harddisk-information/">found
+that hdparm -I</a> will report the disk serial number, which is
+printed on the disk label. The following (almost) one-liner can be
+used to look up the ID of all the failed disks:</p>
+
+<blockquote><pre>
+for d in $(cat /proc/mdstat |grep '(F)'|tr ' ' "\n"|grep '(F)'|cut -d\[ -f1|sort -u);
+do
+ printf "Failed disk $d: "
+ hdparm -I /dev/$d |grep 'Serial Num'
+done
+</blockquote></pre>
+
+<p>Putting it here to make sure I do not have to search for it the
+next time, and in case other find it useful.</p>
+
+<p>At the moment I have two failing disk. :(</p>
+
+<blockquote><pre>
+Failed disk sdd1: Serial Number: WD-WCASJ1860823
+Failed disk sdd2: Serial Number: WD-WCASJ1860823
+Failed disk sde2: Serial Number: WD-WCASJ1840589
+</blockquote></pre>
+
+<p>The last time I had failing disks, I added the serial number on
+labels I printed and stuck on the short sides of each disk, to be able
+to figure out which disk to take out of the box without having to
+remove each disk to look at the physical vendor label. The vendor
+label is at the top of the disk, which is hidden when the disks are
+mounted inside my box.</p>
+
+<p>I really wish the check_linux_raid Nagios plugin for checking Linux
+Software RAID in the
+<a href="http://packages.qa.debian.org/n/nagios-plugins.html">nagios-plugins-standard</a>
+debian package would look up this value automatically, as it would
+make the plugin a lot more useful when my disks fail. At the moment
+it only report a failure when there are no more spares left (it really
+should warn as soon as a disk is failing), and it do not tell me which
+disk(s) is failing when the RAID is running short on disks.</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/raid">raid</a>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
+ <div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/First_release_candidate_of_Debian_Edu___Skolelinux_based_on_Squeeze.html">First release candidate of Debian Edu / Skolelinux based on Squeeze</a>
+ </div>
+ <div class="date">
+ 19th February 2012
+ </div>
+ <div class="body">
+ <p>One week delayed due to DVD build problems, we managed today to
+wrap up and publish the first release candidate for
+<a href="http://www.skolelinux.org/">Debian Edu / Skolelinux</a> based
+on Squeeze. The full announcement is
+<a href="http://lists.debian.org/debian-edu-announce/2012/02/msg00001.html">available</a>
+on the project announcement list. Check it out if you need a software
+solution for your school.</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>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
+ <div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/Second_release_candidate_of_Debian_Edu___Skolelinux_based_on_Squeeze.html">Second release candidate of Debian Edu / Skolelinux based on Squeeze</a>
+ </div>
+ <div class="date">
+ 27th February 2012
+ </div>
+ <div class="body">
+ <p>This weekend we wrapped up and published the second release
+candidate for <a href="http://www.skolelinux.org/">Debian Edu /
+Skolelinux</a> based on Squeeze. The full announcement did for some
+reason not make it the project announcement list, but is
+<a href="http://lists.debian.org/debian-devel-announce/2012/02/msg00015.html">available</a>
+from the Debian development announcement list. Check it out if you
+need a software solution for your school.</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>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
+ <div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/Stopmotion_for_making_stop_motion_animations_on_Linux___reloaded.html">Stopmotion for making stop motion animations on Linux - reloaded</a>
+ </div>
+ <div class="date">
+ 3rd March 2012
+ </div>
+ <div class="body">
+ <p>Many years ago, the <a href="http://www.skolelinux.org/">Skolelinux
+/ Debian Edu project</a> initiated a student project to create a tool
+for making stop motion movies. The proposal came from a teacher
+needing such tool on Skolelinux. The project, called "stopmotion",
+was manned by two extraordinary students and won a school award and a
+national aware with this great project. The project was initiated and
+mentored by Herman Robak, and manned by the students Bjørn Erik Nilsen
+and Fredrik Berg Kjølstad. They got in touch with people at Aardman
+Animation studio and received feedback on how professionals would like
+such stopmotion tool to work, and the end result was and is used by
+animators around the globe. But as is usual after studying, both got
+jobs and went elsewhere, and did not have time to properly tend to the
+project, and it has been lingering for a few years now. Until last
+year...</p>
+
+<p>Last year some of the users got together with Herman, and moved the
+project to Sourceforge and in effect restarted the project under a new
+name,
+<a href="http://sourceforge.net/projects/linuxstopmotion/">linuxstopmotion</a>.
+The name change was done to make it possible to find the project using
+Internet search engines (try to search for 'stopmotion' to see what I
+mean). I've been following
+<a href="https://lists.sourceforge.net/lists/listinfo/linuxstopmotion-community">the
+mailing list</a> and the improvement already in place and planned for
+the future is encouraging. If you want to make stop motion movies.
+Check it out. :)</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/video">video</a>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
+ <div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/Third_release_candidate_of_Debian_Edu___Skolelinux_based_on_Squeeze.html">Third release candidate of Debian Edu / Skolelinux based on Squeeze</a>
+ </div>
+ <div class="date">
+ 4th March 2012
+ </div>
+ <div class="body">
+ <p>This weekend we wrapped up and published the third release
+candidate for <a href="http://www.skolelinux.org/">Debian Edu /
+Skolelinux</a> based on Squeeze. The full announcement is
+<a href="http://lists.debian.org/debian-edu-announce/2012/03/msg00000.html">available</a>
+from the project announcement list. Check it out if you
+need a software solution for your school.</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>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
+ <div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/Debian_Edu_screencast__Mass_creation_of_user_accounts_in_Squeeze.html">Debian Edu screencast: Mass creation of user accounts in Squeeze</a>
+ </div>
+ <div class="date">
+ 7th March 2012
+ </div>
+ <div class="body">
+ <!-- Video HTML based on http://www.diveintohtml5.net/video.html -->
+
+<p>One of the Debian Edu developers, Wolfgang Schweer, just created a
+screen cast documenting how to create a lot of new users in LDAP on
+Debian Edu Squeeze. The video is embedded here in quarter size, and
+also available from <a href="http://vimeo.com/37675399">vimeo</a> and
+download as a
+<a href="http://ftp.skolelinux.org/skolelinux/press/screencasts/2012-02-29-debian_edu_mass_create_user_accounts.ogv">Ogg
+Theora</a> file. Check it out below.</p>
+
+<p><video id="gosa-mass-user-create-movie" width="256" height="184" preload controls>
+ <source src="http://ftp.skolelinux.org/skolelinux/press/screencasts/2012-02-29-debian_edu_mass_create_user_accounts.ogv" type='video/ogg; codecs="theora, vorbis"' />
+ <p>Download video as
+ <a href="http://ftp.skolelinux.org/skolelinux/press/screencasts/2012-02-29-debian_edu_mass_create_user_accounts.ogv">Ogg</a>.</p>
+</video></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>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
+ <div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Nigel_Barker.html">Debian Edu interview: Nigel Barker</a>
+ </div>
+ <div class="date">
+ 9th March 2012
+ </div>
+ <div class="body">
+ <p>Inspired by <a href="http://raphaelhertzog.com/tag/interview/">the
+interview series</a> conducted by Raphael, I started a Norwegian
+interview series with people involved in the Debian Edu / Skolelinux
+community. This was so popular that I believe it is time to move to a
+more international audience.</p>
+
+<p>While <a href="http://www.skolelinux.org/">Debian Edu and
+Skolelinux</a> originated in France and Norway, and have most users in
+Europe, there are users all around the globe. One of those far away
+from me is Nigel Barker, a long time Debian Edu system administrator
+and contributor. It is thanks to him that Debian Edu is adjusted to
+work out of the box in Japan. I got him to answer a few questions,
+and am happy to share the response with you. :)
+
+
+<p><strong>Who are you, and how do you spend your days?</strong></p>
+
+<p>My name is Nigel Barker, and I am British. I am married to Yumiko,
+and we have three lovely children, aged 15, 14 and 4(!) I am the IT
+Coordinator at Hiroshima International School, Japan. I am also a
+teacher, and in fact I spend most of my day teaching Mathematics,
+Science, IT, and Chemistry. I was originally a Chemistry teacher, but
+I have always had an interest in computers. Another teacher teaches
+primary school IT, but apart from that I am the only computer person,
+so that means I am the network manager, technician and webmaster,
+also, and I help people with their computer problems. I teach python
+to beginners in an after-school club. I am way too busy, so I really
+appreciate the simplicity of Skolelinux.</p>
+
+<p><strong>How did you get in contact with the Skolelinux/Debian Edu
+project?</strong></p>
+
+<p>In around 2004 or 5 I discovered the ltsp project, and set up a
+server in the IT lab. I wanted some way to connect it to our central
+samba server, which I was also quite poor at configuring. I discovered
+Edubuntu when it came out, but it didn't really improve my setup. I
+did various desperate searches for things like "school Linux server"
+and ended up in a document called "Drift" something or other. Reading
+there it became clear that Skolelinux was going to solve all my
+problems in one go. I was very excited, but apprehensive, because my
+previous attempts to install Debian had ended in failure (I used
+Mandrake for everything - ltsp, samba, apache, mail, ns...). I
+downloaded a beta version, had some problems, so subscribed to the
+Debian Edu list for help. I have remained subscribed ever since, and
+my school has run a Skolelinux network since Sarge.</p>
+
+<p><strong>What do you see as the advantages of Skolelinux/Debian
+Edu?</strong></p>
+
+<p>For me the integrated setup. This is not just the server, or the
+workstation, or the ltsp. Its all of them, and its all configured
+ready to go. I read somewhere in the early documentation that it is
+designed to be setup and managed by the Maths or Science teacher, who
+doesn't necessarily know much about computers, in a small Norwegian
+school. That describes me perfectly if you replace Norway with
+Japan.</p>
+
+<p><strong>What do you see as the disadvantages of Skolelinux/Debian
+Edu?</strong></p>
+
+<p>The desktop is fairly plain. If you compare it with Edubuntu, who
+have fun themes for children, or with distributions such as Mint, who
+make the desktop beautiful. They create a good impression on people
+who don't need to understand how to use any of it, but who might be
+important to the school. School administrators or directors, for
+instance, or parents. Even kids. Debian itself usually has ugly
+default theme settings. It was my dream a few years back that some
+kind of integration would allow Edubuntu to do the desktop stuff and
+Debian Edu the servers, but now I realise how impossible that is. A
+second disadvantage is that if something goes wrong, or you need to
+customise something, then suddenly the level of expertise required
+multiplies. For example, backup wasn't working properly in Lenny. It
+took me ages to learn how to set up my own server to do rsync backups.
+I am afraid of anything to do with ldap, but perhaps Gosa will
+help.</p>
+
+<p><strong>Which free software do you use daily?</strong></p>
+
+<p>Nowadays I only use Debian on my personal computers. I have one for
+studio work (I play guitar and write songs), running AV Linux
+(customised Debian) a netbook running Squeeze, and a bigger laptop
+still running Skolelinux Lenny workstation. I have a Tjener in my
+house, that's very useful for the family photos and music. At school
+the students only use Skolelinux. (Some teachers and the office still
+have windows). So that means we only use free software all day every
+day. Open office, The GIMP, Firefox/Iceweasel, VLC and Audacity are
+installed on every computer in school, irrespective of OS. We also
+have Koha on Debian for the library, and Apache, Moodle, b2evolution
+and Etomite on Debian for the www. The firewall is Untangle.</p>
+
+<p><strong>Which strategy do you believe is the right one to use to
+get schools to use free software?</strong></p>
+
+<p>Current trends are in our favour. Open source is big in industry,
+and ordinary people have heard of it. The spread of Android and the
+popularity of Apple have helped to weaken the impression that you have
+to have Microsoft on everything. People complain to me much less about
+file formats and Word than they did 5 years ago. The Edu aspect is
+also a selling point. This is all customised for schools. Where is the
+Windows-edu, or the Mac-edu? But of course the main attraction is
+budget.The trick is to convince people that the quality is not
+compromised when you stop paying and use free software instead. That
+is one reason why I say the desktop experience is a weakness. People
+are not impressed when their USB drive doesn't work, or their browser
+doesn't play flash, for example.</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/intervju">intervju</a>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
+ <div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/Skolelinux___Debian_Edu_Squeeze_is_out_.html">Skolelinux / Debian Edu Squeeze is out!</a>
+ </div>
+ <div class="date">
+ 11th March 2012
+ </div>
+ <div class="body">
+ <p>This weekend we finally published the first stable release of
+<a href="http://www.skolelinux.org/">Skolelinux / Debian Edu</a> based
+on Debian/Squeeze. The full announcement is
+<a href="http://lists.debian.org/debian-edu-announce/2012/03/msg00001.html">available</a>
+from the project announcement list. Now is a good time to test if it
+you have not done so already.</p>
+
+<p>I plan to present the new version at
+<a href="http://www.nuug.no/aktiviteter/20120313-skolelinux/">a NUUG
+meeting</a> on tuesday. I look forward to seeing you there if you are
+in Oslo, Norway.</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>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
+ <div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/Writing_and_translating_documentation_in_Debian_Edu.html">Writing and translating documentation in Debian Edu</a>
+ </div>
+ <div class="date">
+ 16th March 2012
+ </div>
+ <div class="body">
+ <p>Documentation in Debian Edu is provided in several languages, and
+it is important to make it both easy to contribute and to keep the
+translated versions in sync. To do this we have come up with what we
+believe is a very efficient work flow.</p>
+
+<ol>
+
+<li>The documentation is written in a
+<a href="http://moinmo.in">moinmoin wiki</a> (see for example
+<a href="http://wiki.debian.org/DebianEdu/Documentation/Squeeze">the
+Squeeze release manual</a>) with support for exporting the content as
+docbook XML.</li>
+
+<li>This docbook document is given to po4a to extract a gettext style
+.pot file with the content, which in turn is used to create .po files
+with the translated text.</li>
+
+<li>The .po files are given to translators, and they can always tell
+which part of the original wiki document is new or changed. They can
+use their normal translation tools like lokalize or poedit to write
+the translation. There is even a system in place to handle translated
+images.</li>
+
+<li>The translated .po files are combined with the original docbook
+XML document using po4a to create a translated docbook document.</li>
+
+<li>The final step is to use all the generated docbook files and
+create PDF and HTML version of the original and translated documents.</li>
+
+</ol>
+
+<p>This setup work very well, but have a few issues. The biggest
+issue is that <a href="http://moinmo.in/DocBook">the docbook support
+we use in moinmoin</a> is not actively maintained. The docbook
+support is also buggy, and our build system contain workarounds to
+make sure the generated docbook is usable despite these bugs.</p>
+
+<p>If you want to have a look at our setup, it is all there in the
+<a href="http://packages.qa.debian.org/debian-edu-doc">debian-edu-doc
+package</a>.</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>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
+ <div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/Debian_Edu_interview__John_Ingleby.html">Debian Edu interview: John Ingleby</a>
+ </div>
+ <div class="date">
+ 19th March 2012
+ </div>
+ <div class="body">
+ <p><a href="http://www.skolelinux.org/">Debian Edu / Skolelinux</a>
+users are spread all across the globe. The second inteview after
+<a href="http://lists.debian.org/debian-edu-announce/2012/03/msg00001.html">the
+Squeeze release</a> was publised is with John Ingleby, a teacher and
+long time Linux user in United Kingdom.</p>
+
+<p><strong>Who are you, and how do you spend your days?</strong></p>
+
+<p>I teach ICT part time at the Rudolf Steiner School in Kings
+Langley, near London, UK. Previously I worked as a technical
+author/trainer while my children attended the school, and I also
+contributed to the Schoolforge UK community with the aim of
+encouraging UK schools to adopt free/open source software. Five or six
+years ago we had about 50 schools interested in some way, but we
+weren't able to convert many of them into sustainable
+installations.</p>
+
+<p><strong>How did you get in contact with the Skolelinux/Debian Edu
+project?</strong></p>
+
+<p>Skolelinux had two representatives at an early Edubuntu meeting in
+London which I attended. However at that time our school network had
+just been installed using CentOS, LTSP 4 and GNOME. When LTSP 5 came
+along we switched to Edubuntu thin client servers so now we have a
+mixed environment which includes Windows PCs and student laptops, as
+well as their MacBooks and iPads. However, the proprietary systems
+have always been rather problematic, and we never built a GUI for the
+LDAP server, so when I discovered Skolelinux is configured for all
+these things we decided to try it.</p>
+
+<p><strong>What do you see as the advantages of Skolelinux/Debian
+Edu?</strong></p>
+
+<p>By far the biggest advantage is the Debian Edu community. Apart
+from that I have always believed in the same "sustainable computing"
+goals that Skolelinux is built on: installing Linux on computers which
+would otherwise be thrown away, to provide a reliable, secure and
+low-cost IT environment for schools. From my own experience I know
+that a part-time person can teach and manage a network of about 25
+Linux computers, but it would take much more of my time if we had
+proprietary software everywhere.</p>
+
+<p><strong>What do you see as the disadvantages of Skolelinux/Debian
+Edu?</strong></p>
+
+<p>As a newcomer I'm just finding out who's who in the community and
+how you're organised, and what your procedures are for dealing with
+various things such as editing manual pages and so-on. The only
+English language mailing list seems to be for developers as well as
+users, so my inbox needs heavy pruning each day!</p>
+
+<p><strong>Which free software do you use daily?</strong></p>
+
+<p>Besides the software already mentioned at school we use Samba,
+OpenLDAP, CUPS, Nagios and Dansguardian for the network, and on the
+desktops we have LibreOffice, Firefox, GIMP and Inkscape. At home I
+use Ubuntu and an Android 4 eePad Transformer (but I'm not sure if
+that counts...)</p>
+
+<p><strong>Which strategy do you believe is the right one to use to
+get schools to use free software?</strong></p>
+
+<p>That's a tough question! For very many years UK schools installed
+and taught only proprietary software, so that at the highest levels
+the notion of "computer" means simply "proprietary office
+applications". However, schools today are experiencing budget
+constraints, and many are having to think hard about upgrading Windows
+XP. At the same time, we have students showing teachers how to use
+iPads, MacBooks and Android, so the choice of operating system is no
+longer quite so automatic. What is more, our government at last
+realised that we need people with programming skills, so they're
+putting coding back in the curriculum! And it's encouraging that the
+first 10,000 Raspberry Pi units sold out in 2 hours.</p>
+
+<p>I don't really know what strategy is going to get UK schools to use
+free software, but building an active community of Skolelinux/Debian
+Edu users in this country has to be part of it.</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/intervju">intervju</a>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
+ <div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/Debian_Edu_screencast__Checking_email_with_kmail_using_Kerberos_authentication.html">Debian Edu screencast: Checking email with kmail using Kerberos authentication</a>
+ </div>
+ <div class="date">
+ 25th March 2012
+ </div>
+ <div class="body">
+ <!-- Video HTML based on http://www.diveintohtml5.net/video.html -->
+
+<p>The same Debian Edu developer that did the last screen cast I
+published, Wolfgang Schweer, has created a new screen cast showing how
+to set up Kmail in Debian Edu Squeze to authenticate using Kerberos,
+allowing users to check their local email account without providing
+any password. The video is embedded here in quarter size,
+and also available from <a href="https://vimeo.com/38601767">vimeo</a>
+and download as a
+<a href="http://ftp.skolelinux.org/skolelinux/press/screencasts/2012-03-14-Debian-Edu_Configure_Kmail_for_internal_usage.ogv">Ogg
+Theora</a> file. Check it out below.</p>
+
+<p><video id="kmail-kerberos-movie" width="256" height="184" preload controls>
+ <source src="http://ftp.skolelinux.org/skolelinux/press/screencasts/2012-03-14-Debian-Edu_Configure_Kmail_for_internal_usage.ogv" type='video/ogg; codecs="theora, vorbis"' />
+ <p>Download video as
+ <a href="http://ftp.skolelinux.org/skolelinux/press/screencasts/2012-03-14-Debian-Edu_Configure_Kmail_for_internal_usage.ogv">Ogg</a>.</p>
+</video></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>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
+ <div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Wolfgang_Schweer.html">Debian Edu interview: Wolfgang Schweer</a>
+ </div>
+ <div class="date">
+ 1st April 2012
+ </div>
+ <div class="body">
+ <p>Germany is a core area for the
+<a href="http://www.skolelinux.org/">Debian Edu and Skolelinux</a>
+user community, and this time I managed to get hold of Wolfgang
+Schweer, a valuable contributor to the project from Germany.
+
+<p><strong>Who are you, and how do you spend your days?</strong></p>
+
+<p>I've studied Mathematics at the university 'Ruhr-Universität' in
+Bochum, Germany. Since 1981 I'm working as a teacher at the school
+"<a href="http://www.westfalenkolleg-dortmund.de/">Westfalen-Kolleg
+Dortmund</a>", a second chance school. Here, young adults is given
+the opportunity to get further education in order to do the school
+examination 'Abitur', which will allow to study at a university. This
+second chance is of value for those who want a better job perspective
+or failed to get a higher school examination being teens.</p>
+
+<p>Besides teaching I was involved in developing online courses for a
+blended learning project called 'abitur-online.nrw' and in some other
+information technology related projects. For about ten years I've been
+teacher and coordinator for the 'abitur-online' project at my
+school. Being now in my early sixties, I've decided to leave school at
+the end of April this year.</p>
+
+<p><strong>How did you get in contact with the Skolelinux/Debian Edu
+project?</strong></p>
+
+<p>The first information about Skolelinux must have come to my
+attention years ago and somehow related to LTSP (Linux Terminal Server
+Project). At school, we had set up a network at the beginning of 1997
+using Suse Linux on the desktop, replacing a Novell network. Since
+2002, we used old machines from the city council of Dortmund as thin
+clients (LTSP, later Ubuntu/Lessdisks) cause new hardware was out of
+reach. At home I'm using Debian since years and - subscribed to the
+Debian news letter - heard from time to time about Skolelinux. About
+two years ago I proposed to replace the (somehow undocumented and only
+known to me) system at school by a well known Debian based system:
+Skolelinux.</p>
+
+<p>Students and teachers appreciated the new system because of a
+better look and feel and an enhanced access to local media on thin
+clients. The possibility to alter and/or reset passwords using a GUI
+was welcomed, too. Being able to do administrative tasks using a GUI
+and to easily set up workstations using PXE was of very high value for
+the admin teachers.</p>
+
+<p><strong>What do you see as the advantages of Skolelinux/Debian
+Edu?</strong></p>
+
+<p>It's open source, easy to set up, stable and flexible due to it's
+Debian base. It integrates LTSP out-of-the-box. And it is documented!
+So it was a perfect choice.</p>
+
+<p>Being open source, there are no license problems and so it's
+possible to point teachers and students to programs like
+OpenOffice.org, ViewYourMind (mind mapping) and The Gimp. It's of
+high value to be able to adapt parts of the system to special needs of
+a school and to choose where to get support for this.</p>
+
+<p><strong>What do you see as the disadvantages of Skolelinux/Debian
+Edu?</strong></p>
+
+<p>Nothing yet.</p>
+
+<p><strong>Which free software do you use daily?</strong></p>
+
+<p>At home (Debian Sid with Gnome Desktop): Iceweasel, LibreOffice,
+Mutt, Gedit, Document Viewer, Midnight Commander, flpsed (PDF
+Annotator). At school (Skolelinux Lenny): Iceweasel, Gedit,
+LibreOffice.</p>
+
+<p><strong>Which strategy do you believe is the right one to use to
+get schools to use free software?</strong></p>
+
+<p>Some time ago I thought it was enough to tell people about it. But
+that doesn't seem to work quite well. Now I concentrate on those more
+interested and hope to get multiplicators that way.</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/intervju">intervju</a>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
+ <div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/Debian_Edu_in_the_Linux_Weekly_News.html">Debian Edu in the Linux Weekly News</a>
+ </div>
+ <div class="date">
+ 5th April 2012
+ </div>
+ <div class="body">
+ <p>About two weeks ago, I was interviewed via email about
+<a href="http://www.skolelinux.org/">Debian Edu and Skolelinux</a> by
+Bruce Byfield in Linux Weekly News. The result was made public for
+non-subscribers today. I am pleased to see liked our Linux solution
+for schools. Check out his article
+<a href="https://lwn.net/Articles/488805/">Debian Edu/Skolelinux: A
+distribution for education</a> if you want to learn more.</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>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
+ <div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/Why_the_KDE_menu_is_slow_when__usr__is_NFS_mounted___and_a_workaround.html">Why the KDE menu is slow when /usr/ is NFS mounted - and a workaround</a>
+ </div>
+ <div class="date">
+ 6th April 2012
+ </div>
+ <div class="body">
+ <p>Recently I have spent time with
+<a href="http://www.slxdrift.no/">Skolelinux Drift AS</a> on speeding
+up a <a href="http://www.skolelinux.org/">Debian Edu / Skolelinux</a>
+Lenny installation using LTSP diskless workstations, and in the
+process I discovered something very surprising. The reason the KDE
+menu was responding slow when using it for the first time, was mostly
+due to the way KDE find application icons. I discovered that showing
+the Multimedia menu would cause more than 20 000 IP packages to be
+passed between the LTSP client and the NFS server. Most of these were
+
+NFS LOOKUP calls, resulting in a NFS3ERR_NOENT response. Because the
+ping times between the client and the server were in the range 2-20
+ms, the menus would be very slow. Looking at the strace of kicker in
+Lenny (or plasma-desktop i Squeeze - same problem there), I see that
+the source of these NFS calls are access(2) system calls for
+non-existing files. KDE can do hundreds of access(2) calls to find
+one icon file. In my example, just finding the mplayer icon required
+around 230 access(2) calls.</p>
+
+<p>The KDE code seem to search for icons using a list of icon
+directories, and the list of possible directories is large. In
+(almost) each directory, it look for files ending in .png, .svgz, .svg
+and .xpm. The result is a very slow KDE menu when /usr/ is NFS
+mounted. Showing a single sub menu may result in thousands of NFS
+requests. I am not the first one to discover this. I found a
+<a href="https://bugs.kde.org/show_bug.cgi?id=211416">KDE bug report
+from 2009</a> about this problem, and it is still unsolved.</p>
+
+<p>My solution to speed up the KDE menu was to create a package
+kde-icon-cache that upon installation will look at all .desktop files
+used to generate the KDE menu, find their icons, search the icon paths
+for the file that KDE will end up finding at run time, and copying the
+icon file to /var/lib/kde-icon-cache/. Finally, I add symlinks to
+these icon files in one of the first directories where KDE will look
+for them. This cut down the number of file accesses required to find
+one icon from several hundred to less than 5, and make the KDE menu
+almost instantaneous. I'm not quite sure where to make the package
+publicly available, so for now it is only available on request.</p>
+
+<p>The bug report mention that this do not only affect the KDE menu
+and icon handling, but also the login process. Not quite sure how to
+speed up that part without replacing NFS with for example NBD, and
+that is not really an option at the moment.</p>
+
+<p>If you got feedback on this issue, please let us know on debian-edu
+(at) lists.debian.org.</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>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
+ <div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Justin_B__Rye.html">Debian Edu interview: Justin B. Rye</a>
+ </div>
+ <div class="date">
+ 8th April 2012
+ </div>
+ <div class="body">
+ <p>It take all kind of contributions to create a Linux distribution
+like <a href="http://www.skolelinux.org/">Debian Edu / Skolelinux</a>,
+and this time I lend the ear to Justin B. Rye, who is listed as a big
+contributor to the
+<a href="http://wiki.debian.org/DebianEdu/Documentation/Squeeze">Debian
+Edu Squeeze release manual</a>.
+
+<p><strong>Who are you, and how do you spend your days?</strong></p>
+
+<p>I'm a 44-year-old linguistics graduate living in Edinburgh who has
+occasionally been employed as a sysadmin.</p>
+
+<p><strong>How did you get in contact with the Skolelinux/Debian Edu
+project?</strong></p>
+
+<p>I'm neither a developer nor a Skolelinux/Debian Edu user! The only
+reason my name's in the credits for the documentation is that I hang
+around on debian-l10n-english waiting for people to mention things
+they'd like a native English speaker to proofread... So I did a sweep
+through the wiki for typos and Norglish and inconsistent spellings of
+"localisation".</p>
+
+<p><strong>What do you see as the advantages of Skolelinux/Debian
+Edu?</strong></p>
+
+<p><strong>What do you see as the disadvantages of Skolelinux/Debian
+Edu?</strong></p>
+
+<p>These questions are too hard for me - I don't use it! In fact I
+had hardly any contact with I.T. until long after I'd got out of the
+education system.</p>
+
+<p>I can tell you the advantages of Debian for me though: it soaks up
+as much of my free time as I want and no more, and lets me do
+everything I want a computer for without ever forcing me to spend
+money on the latest hardware.</p>
+
+<p><strong>Which free software do you use daily?</strong></p>
+
+<p>I've been using Debian since Rex; popularity-contest says the
+software that I use most is xinit, xterm, and xulrunner (in other
+words, I use a distinctly retro sort of desktop).</p>
+
+<p><strong>Which strategy do you believe is the right one to use to
+get schools to use free software?</strong></p>
+
+<p>Well, I don't know. I suppose I'd be inclined to try reasoning
+with the people who make the decisions, but obviously if that worked
+you would hardly need a strategy.</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/intervju">intervju</a>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
+ <div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Andreas_Mundt.html">Debian Edu interview: Andreas Mundt</a>
+ </div>
+ <div class="date">
+ 15th April 2012
+ </div>
+ <div class="body">
+ <p>Behind <a href="http://www.skolelinux.org/">Debian Edu and
+Skolelinux</a> there are a lot of people doing the hard work of
+setting together all the pieces. This time I present to you Andreas
+Mundt, who have been part of the technical development team several
+years. He was also a key contributor in getting GOsa and Kerberos set
+up in the recently released
+<a href="http://wiki.debian.org/DebianEdu/Documentation/Squeeze">Debian
+Edu Squeeze</a> version.</p>
+
+<p><strong>Who are you, and how do you spend your days?</strong></p>
+
+<p>My name is Andreas Mundt, I grew up in south Germany. After
+studying Physics I spent several years at university doing research in
+Quantum Optics. After that I worked some years in an optics company.
+Finally I decided to turn over a new leaf in my life and started
+teaching 10 to 19 years old kids at school. I teach math, physics,
+information technology and science/technology.</p>
+
+<p><strong>How did you get in contact with the Skolelinux/Debian Edu
+project?</strong></p>
+
+<p>Already before I switched to teaching, I followed the Debian Edu
+project because of my interest in education and Debian. Within the
+qualification/training period for the teaching, I started
+contributing.</p>
+
+<p><strong>What do you see as the advantages of Skolelinux/Debian
+Edu?</strong></p>
+
+<p>The advantages of Debian Edu are the well known name, the
+out-of-the-box philosophy and of course the great free software of the
+Debian Project!</p>
+
+<p><strong>What do you see as the disadvantages of Skolelinux/Debian
+Edu?</strong></p>
+
+<p>As every coin has two sides, the out-of-the-box philosophy has its
+downside, too. In my opinion, it is hard to modify and tweak the
+setup, if you need or want that. Further more, it is not easily
+possible to upgrade the system to a new release. It takes much too
+long after a Debian release to prepare the -Edu release, perhaps
+because the number of developers working on the core of the code is
+rather small and often busy elsewhere.</p>
+
+<p>The <a href="http://wiki.debian.org/DebianLAN">Debian LAN</a>
+project might fill the use case of a more flexible system.</p>
+
+<p><strong>Which free software do you use daily?</strong></p>
+
+<p>I am only using non-free software if I am forced to and run Debian
+on all my machines. For documents I prefer LaTeX and PGF/TikZ, then
+mutt and iceweasel for email respectively web browsing. At school I
+have Arduino and Fritzing in use for a micro controller project.</p>
+
+<p><strong>Which strategy do you believe is the right one to use to
+get schools to use free software?</strong></p>
+
+<p>One of the major problems is the vendor lock-in from top to bottom:
+Especially in combination with ignorant government employees and
+politicians, this works out great for the "market-leader". The school
+administration here in Baden-Wuerttemberg is occupied by that vendor.
+Documents have to be prepared in non-free, proprietary formats. Even
+free browsers do not work for the school administration. Publishers
+of school books provide software only for proprietary platforms.</p>
+
+<p>To change this, political work is very important. Parts of the
+political spectrum have become aware of the problem in the last years.
+However it takes quite some time and courageous politicians to 'free'
+the system. There is currently some discussion about "Open Data" and
+"Free/Open Standards". I am not sure if all the involved parties have
+a clue about the potential of these ideas, and probably only a
+fraction takes them seriously. However it might slowly make free
+software and the philosophy behind it more known and popular.</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/intervju">intervju</a>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
+ <div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/RAND_terms___non_reasonable_and_discriminatory.html">RAND terms - non-reasonable and discriminatory</a>
+ </div>
+ <div class="date">
+ 19th April 2012
+ </div>
+ <div class="body">
+ <p>Here in Norway, the
+<a href="http://www.regjeringen.no/nb/dep/fad.html?id=339"> Ministry of
+Government Administration, Reform and Church Affairs</a> is behind
+a <a href="http://standard.difi.no/forvaltningsstandarder">directory of
+standards</a> that are recommended or mandatory for use by the
+government. When the directory was created, the people behind it made
+an effort to ensure that everyone would be able to implement the
+standards and compete on equal terms to supply software and solutions
+to the government. Free software and non-free software could compete
+on the same level.</p>
+
+<p>But recently, some standards with RAND
+(<a href="http://en.wikipedia.org/wiki/Reasonable_and_non-discriminatory_licensing">Reasonable
+And Non-Discriminatory</a>) terms have made their way into the
+directory. And while this might not sound too bad, the fact is that
+standard specifications with RAND terms often block free software from
+implementing them. The reasonable part of RAND mean that the cost per
+user/unit is low,and the non-discriminatory part mean that everyone
+willing to pay will get a license. Both sound great in theory. In
+practice, to get such license one need to be able to count users, and
+be able to pay a small amount of money per unit or user. By
+definition, users of free software do not need to register their use.
+So counting users or units is not possible for free software projects.
+And given that people will use the software without handing any money
+to the author, it is not really economically possible for a free
+software author to pay a small amount of money to license the rights
+to implement a standard when the income available is zero. The result
+in these situations is that free software are locked out from
+implementing standards with RAND terms.</p>
+
+<p>Because of this, when I see someone claiming the terms of a
+standard is reasonable and non-discriminatory, all I can think of is
+how this really is non-reasonable and discriminatory. Because free
+software developers are working in a global market, it does not really
+help to know that software patents are not supposed to be enforceable
+in Norway. The patent regimes in other countries affect us even here.
+I really hope the people behind the standard directory will pay more
+attention to these issues in the future.</p>
+
+<p>You can find more on the issues with RAND, FRAND and RAND-Z terms
+from Simon Phipps
+(<a href="http://blogs.computerworlduk.com/simon-says/2010/11/rand-not-so-reasonable/">RAND:
+Not So Reasonable?</a>).</p>
+
+<p>Update 2012-04-21: Just came across a
+<a href="http://blogs.computerworlduk.com/open-enterprise/2012/04/of-microsoft-netscape-patents-and-open-standards/index.htm">blog
+post from Glyn Moody</a> over at Computer World UK warning about the
+same issue, and urging people to speak out to the UK government. I
+can only urge Norwegian users to do the same for
+<a href="http://www.standard.difi.no/hoyring/hoyring-om-nye-anbefalte-it-standarder">the
+hearing taking place at the moment</a> (respond before 2012-04-27).
+It proposes to require video conferencing standards including
+specifications with RAND terms.</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/multimedia">multimedia</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>, <a href="http://people.skolelinux.org/pere/blog/tags/standard">standard</a>, <a href="http://people.skolelinux.org/pere/blog/tags/video">video</a>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
+ <div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/HTC_One_X___Your_video___What_do_you_mean_.html">HTC One X - Your video? What do you mean?</a>
+ </div>
+ <div class="date">
+ 26th April 2012
+ </div>
+ <div class="body">
+ <p>In <a href="http://www.idg.no/computerworld/article243690.ece">an
+article today</a> published by Computerworld Norway, the photographer
+<a href="http://www.urke.com/eirik/">Eirik Helland Urke</a> reports
+that the video editor application included with
+<a href="http://www.htc.com/www/smartphones/htc-one-x/#specs">HTC One
+X</a> have some quite surprising terms of use. The article is mostly
+based on the twitter message from mister Urke, stating:
+
+<p><blockquote>
+"<a href="http://twitter.com/urke/status/194062269724897280">Drøy
+brukeravtale: HTC kan bruke MINE redigerte videoer kommersielt. Selv
+kan jeg KUN bruke dem privat.</a>"
+</blockquote></p>
+
+<p>I quickly translated it to this English message:</p>
+
+<p><blockquote>
+"Arrogant user agreement: HTC can use MY edited videos
+commercially. Although I can ONLY use them privately."
+</blockquote></p>
+
+<p>I've been unable to find the text of the license term myself, but
+suspect it is a variation of the MPEG-LA terms I
+<a href="http://people.skolelinux.org/pere/blog/Terms_of_use_for_video_produced_by_a_Canon_IXUS_130_digital_camera.html">discovered
+with my Canon IXUS 130</a>. The HTC One X specification specifies that
+the recording format of the phone is .amr for audio and .mp3 for
+video. AMR is
+<a href="http://en.wikipedia.org/wiki/Adaptive_Multi-Rate_audio_codec#Licensing_and_patent_issues">Adaptive
+Multi-Rate audio codec</a> with patents which according to the
+Wikipedia article require an license agreement with
+<a href="http://www.voiceage.com/">VoiceAge</a>. MP4 is
+<a href="http://en.wikipedia.org/wiki/H.264/MPEG-4_AVC#Patent_licensing">MPEG4 with
+H.264</a>, which according to Wikipedia require a licence agreement
+with <a href="http://www.mpegla.com/">MPEG-LA</a>.</p>
+
+<p>I know why I prefer
+<a href="http://www.digistan.org/open-standard:definition">free and open
+standards</a> also for video.</p>
+
+ </div>
+ <div class="tags">
+
+
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/digistan">digistan</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/personvern">personvern</a>, <a href="http://people.skolelinux.org/pere/blog/tags/standard">standard</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/Cutting_it_short___and_picking_the_right_tool_for_the_job.html">Cutting it short - and picking the right tool for the job</a>
+ </div>
+ <div class="date">
+ 30th April 2012
+ </div>
+ <div class="body">
+ <p><!-- IMG_5869.JPG -->
+<img src="http://people.skolelinux.org/pere/blog/images/panasonic-er-1611.jpeg"></p>
+
+<p>I normally cut my hair short, and my tool of choice has been a
+common hair/beard cutter, bought in a electrical shop here in Norway.
+But the last ones have not really been up to the task. My last
+cutter, some model from Braun, could only cut a few of my hairs at the
+time, and cutting my head took forever. And the one before that did
+not work very well either. We have looked for something better for a
+while, but it was not until I ended up visiting a hairdresser that we
+discovered that there are indeed better tools available. But these
+are not marketed and sold to "regular consumers". The hair saloons
+can get them through their suppliers, but their suppliers only sell
+companies. The models they sell, are very different from the ones
+available from Elkjøp and Lefdal. The main difference is their
+efficiency. It would cut my hair in 5 minutes, instead of the 30-40
+minutes required by my impotent Braun. The hairdresser I visited had
+a Panasonic ER160, which unfortunately is no longer available from the
+producer. But I found it had a successor, the Panasonic ER1611.</p>
+
+<p>The next step was to find somewhere to buy it. This was not
+straight forward. The list of suppliers I got from the hairdresser
+did not want to sell anything to me. But searching for the model on
+the web we found a supplier in Norway willing to sell it to us for
+around NOK 4000,-. This was a bit much. We kept searching and
+finally found a Danish supplier
+<a href="http://nicehair.dk/panasonic-er-1611-professionel-hartrimmer.html">selling
+it for around NOK 1800,-</a>. We ordered one, and it arrived a few
+days ago.</p>
+
+<p>The instructions said it had to charge for 8 hours when we started
+to use it, so we left it charging over night. Normally it will only
+need one hour to charge. The following evening we successfully tested
+it, and I can warmly recommend it to anyone looking for a real hair
+cutter. The ones we have used until now have been hair cutter
+toys.</p>
+
+ </div>
+ <div class="tags">
+
+
+ Tags: <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/Debian_Edu_interview__J_rgen_Leibner.html">Debian Edu interview: Jürgen Leibner</a>
+ </div>
+ <div class="date">
+ 13th May 2012
+ </div>
+ <div class="body">
+ <p>It has been a few busy weeks for me, but I am finally back to
+publish another interview with the people behind
+<a href="http://www.skolelinux.org/">Debian Edu and Skolelinux</a>.
+This time it is one of our German developers, who have helped out over the
+years to make sure both a lot of major but also a lot of the minor
+details get right before release.
+
+<p><strong>Who are you, and how do you spend your days?</strong></p>
+
+<p>My name is Jürgen Leibner, I'm 49 years old and living in
+Bielefeld, a town in northern Germany. I worked nearly 20 years as
+certified engineer in the department for plant design and layout of an
+international company for machinery and equipment. Since 2011 I'm a
+certified technical writer (tekom e.V.) and doing technical
+documentations for a steam turbine manufacturer. From April this year
+I will manage the department of technical documentation at a
+manufacturer of automation and assembly line engineering.</p>
+
+<p>My first contact with linux was around 1993. Since that time I used
+it at work and at home repeatedly but not exclusively as I do now at
+home since 2006.</p>
+
+<p><strong>How did you get in contact with the Skolelinux/Debian Edu
+project?</strong></p>
+
+<p>Once a day in the early year of 2001 when I wanted to fetch my
+daughter from primary school, there was a teacher sitting in the
+middle of 20 old computers trying to boot them and he failed. I helped
+him to get them booting. That was seen by the school director and she
+asked me if I would like to manage that the school gets all that old
+computers in use. I answered: "Yes".</p>
+
+<p>Some weeks later every of the 10 classrooms had one computer
+running Windows98. I began to collect old computers and equipment as
+gifts and installed the first computer room with a peer-to-peer
+network. I did my work at school without being payed in my spare time
+and with a lot of fun. About one year later the school was connected
+to Internet and a local area network was installed in the school
+building. That was the time to have a server and I knew it must be a
+Linux server to be able to fulfil all the wishes of the teachers and
+being able to do this in a transparent and economic way, without extra
+costs for things like licence and software. So I searched for a
+school server system running under Linux and I found a couple of
+people nearby who founded 'skolelinux.de'. It was the Skolelinux
+prerelease 32 I first tried out for being used at the school. I
+managed the IT of that school until the municipal authority took over
+the IT management and centralised the services for all schools in
+Bielefeld in December of 2006.</p>
+
+<p><strong>What do you see as the advantages of Skolelinux/Debian
+Edu?</strong></p>
+
+<p>When I'm looking back to the beginning, there were other advantages
+for me as today.</p>
+
+<p>In the past there were advantages like:</p>
+
+<p><ul>
+
+<li>I don't need to buy it so it generates no costs to the school as
+they had little money to spent for computers and software.</li>
+
+<li>It has a licence which grands all rights to use it without
+cost.</li>
+
+<li>It was more able to fit all requirements of a server system for
+schools than a Microsoft server system, even if there are only Windows
+clients because of it's preconfigured overall concept of being a
+infrastructure solution and community for schools, not only a
+server</li>
+
+<li>I was able to configure the server to the needs of the
+school.</li>
+
+</ul></p>
+
+<p>Today some of the advantages has been lost, changed or new ones
+came up in this way:</p>
+
+<p><ul>
+
+<li>Most schools here do have money to buy hardware and software
+now.</li>
+
+<li>They are today mostly managed from central IT departments which
+have own concepts which often do not fit to Debian Edu concepts
+because they are to close to Microsoft ideology.</li>
+
+<li>With the Squeeze version of Debian Edu which now uses GOsa² for
+management I feel more able to manage the daily tasks than with the
+interfaces used in the past.</li>
+
+<li>It is more modular than in the past and fits even better to the
+different needs.</li>
+
+<li>The documentation is usable and gets better every day.</li>
+
+<li>More people than ever before are using Debian Edu all over the
+world and so the community, which is an very important part I think,
+is sharing knowledge and minds.</li>
+
+<li>Most, maybe all, of the technical requirements for schools are
+solved today by Debian Edu. </li>
+
+</ul></p>
+
+<p><strong>What do you see as the disadvantages of Skolelinux/Debian
+Edu?</strong></p>
+
+<p><ul>
+
+<li>There are too few IT companies able to integrate Debian Edu into
+their product portfolio for serving schools with concepts or even
+whole municipality areas.</li>
+
+<li>Debian Edu has beside other free and open software projects not
+enough lobbyists which promote free and open software to
+politicians.</li>
+
+<li>Technically there are no disadvantages I'm aware of.</li>
+
+</ul></p>
+
+<p><strong>Which free software do you use daily?</strong></p>
+
+<p>I use Debian stable on my home server and on my little desktop
+computer. On my laptop I use Debian testing/sid. The applications I
+use on my laptop and my desktop are Open/Libre-office, Iceweasel,
+KMail, DigiKam, Amarok, Dolphin, okular and all the other programs I
+need from the KDE environment. On console I use newsbeuter, mutt,
+screen, irssi and all the other famous and useful tools.</p>
+
+<p>My home server provides mail services with exim, dovecot, roundcube
+and mutt over ssh on the console, file services with samba, NFS,
+rsync, web services with apache, moinmoin-wiki, multimedia services
+with gallery2 and mediatomb and database services with MySQL for me
+and the whole family. I probably forgot something.</p>
+
+<p><strong>Which strategy do you believe is the right one to use to
+get schools to use free software?</strong></p>
+
+<p>I believe, we should provide concepts for IT companies to integrate
+Debian Edu into their product portfolio with use cases for different
+countries and areas all over the world.</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/intervju">intervju</a>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
+ <div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/ColorHug___USB_and_free_software_based_screen_color_calibration.html">ColorHug - USB and free software based screen color calibration</a>
+ </div>
+ <div class="date">
+ 18th May 2012
+ </div>
+ <div class="body">
+ <p>In january, I
+<a href="http://blog.cihar.com/archives/2012/01/17/colorhug-has-arrived/">discovered
+the ColorHug</a>, a USB dongle from
+<a href="http://www.hughski.com/index.html">Hughski</a> to calibrate
+the color on a computer screen. The software required is
+<a href="http://packages.qa.debian.org/c/colorhug-client.html">included
+in Debian</a>, and I decided back then to preorder from the next
+batch. Yesterday I finally heard back from them, and got the
+opportunity to order. Today I ordered mine, and eagerly await the
+delivery. I hope it arrive next week, as I got a confirmation that it
+should go in the mail on monday. :)</p>
+
+<p>If you want to ensure the colors on the screen match the intended
+colors, I suggest you check out this cheap tool with free software
+drivers. :)</p>
+
+ </div>
+ <div class="tags">
+
+
+ Tags: <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/The_cost_of_ODF_and_OOXML.html">The cost of ODF and OOXML</a>
+ </div>
+ <div class="date">
+ 26th May 2012
+ </div>
+ <div class="body">
+ <p>I just come across a blog post from Glyn Moody reporting the
+claimed cost from Microsoft on requiring ODF to be used by the UK
+government. I just sent him an email to let him know that his
+assumption are most likely wrong. Sharing it here in case some of my
+blog readers have seem the same numbers float around in the UK.</p>
+
+<p><blockquote> <p>Hi. I just noted your
+<a href="http://blogs.computerworlduk.com/open-enterprise/2012/04/does-microsoft-office-lock-in-cost-the-uk-government-500-million/index.htm">http://blogs.computerworlduk.com/open-enterprise/2012/04/does-microsoft-office-lock-in-cost-the-uk-government-500-million/index.htm</a>
+comment:</p>
+
+<p><blockquote>"They're all in Danish, not unreasonably, but even
+with the help of Google Translate I can't find any figures about the
+savings of "moving to a flexible two standard" as claimed by the
+Microsoft email. But I assume it is backed up somewhere, so let's take
+it, and the £500 million figure for the UK, on trust."
+</blockquote></p>
+
+<p>I can tell you that the Danish reports are inflated. I believe it is
+the same reports that were used in the Norwegian debate around 2007,
+and Gisle Hannemyr (a well known IT commentator in Norway) had a look
+at the content. In short, the reason it is claimed that using ODF
+will be so costly, is based on the assumption that this mean every
+existing document need to be converted from one of the MS Office
+formats to ODF, transferred to the receiver, and converted back from
+ODF to one of the MS Office formats, and that the conversion will cost
+10 minutes of work time for both the sender and the receiver. In
+reality the sender would have a tool capable of saving to ODF, and the
+receiver would have a tool capable of reading it, and the time spent
+would at most be a few seconds for saving and loading, not 20 minutes
+of wasted effort.</p>
+
+<p>Microsoft claimed all these costs were saved by allowing people to
+transfer the original files from MS Office instead of spending 10
+minutes converting to ODF. :)</p>
+
+<p>See
+<a href="http://hannemyr.com/no/ms12_vl02.php">http://hannemyr.com/no/ms12_vl02.php</a>
+and
+<a href="http://hannemyr.com/no/ms12.php">http://hannemyr.com/no/ms12.php</a>
+for background information. Norwegian only, sorry. :)</p>
+</blockquote></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/nuug">nuug</a>, <a href="http://people.skolelinux.org/pere/blog/tags/standard">standard</a>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
+ <div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Ralf_Gesellensetter.html">Debian Edu interview: Ralf Gesellensetter</a>
+ </div>
+ <div class="date">
+ 27th May 2012
+ </div>
+ <div class="body">
+ <p>In 2003, a German teacher showed up on the
+<a href="http://www.skolelinux.org/">Debian Edu and Skolelinux</a>
+mailing list with interesting problems and reports proving he setting
+up Linux for a (for us at the time) lot of pupils. His name was Ralf
+Gesellensetter, and he has been an important tester and contributor
+since then, helping to make sure the
+<a href="http://www.debian.org/News/2012/20120311.html">Debian Edu
+Squeeze</a> release became as good as it is..</p>
+
+<p><strong>Who are you, and how do you spend your days?</strong></p>
+
+<p>I am a teacher from Germany, and my subjects are Geography,
+Mathematics, and Computer Science ("Informatik"). During the past 12
+years (since 2000), I have been working for a comprehensive (and soon,
+also inclusive) school leading to all kind of general levels, such as
+O- or A-level ("Abitur"). For quite as long, I've been taking care of
+our computer network.</p>
+
+<p>Now, in my early 40s, I enjoy the privilege of spending a lot of my
+spare time together with my wife, our son (3 years) and our daughter
+(4 months).</p>
+
+<p><strong>How did you get in contact with the Skolelinux/Debian Edu
+project?</strong></p>
+
+<p>We had tried different Linux based school servers, when members of
+my local Linux User Group (LUG OWL) detected Skolelinux. I remember
+very well, being part of a party celebrating the Linux New Media Award
+("Best Newcomer Distribution", also nominated: Ubuntu) that was given
+to Skolelinux at Linux World Exposition in Frankfurt, 2005 (IIRC). Few
+months later, I had the chance to join a developer meeting in Ulsrud
+(Oslo) and to hand out the award to Knut Yrvin and others. For more
+than 7 years, Skolelinux is part of our schools infrastructure, namely
+our main server (tjener), one LTSP (today without thin clients), and
+approximately 50 work stations. Most of these have the option to boot a
+locally installed Skolelinux image. As a consequence, I joined quite
+a few events dealing with free software or Linux, and met many Debian
+(Edu) developers. All of them seemed quite nice and competent to me,
+one more reason to stick to Skolelinux.</p>
+
+<p><strong>What do you see as the advantages of Skolelinux/Debian
+Edu?</strong></p>
+
+<p>Debian driven, you are given all the advantages of a community
+project including well maintained updates. Once, you are familiar with
+the network layout, you can easily roll out an entire educational
+computer infrastructure, from just one installation media. As only
+free software (FOSS) is used, that supports even elderly hardware,
+up-sizing your IT equipment is only limited by space (i.e. available
+labs). Especially if you run a LTSP thin client server, your
+administration costs tend towards zero.</p>
+
+<p><strong>What do you see as the disadvantages of Skolelinux/Debian
+Edu?</strong></p>
+
+<p>While Debian's stability has loads of advantages for servers, this
+might be different in some cases for clients: Schools with unlimited
+budget might buy new hardware with components that are not yet
+supported by Debian stable, or wish to use more recent versions of
+office packages or desktop environments. These schools have the
+option to run Debian testing or other distributions - if they have the
+capacity to do so. Another issue is that Debian release cycles
+include a wide range of changes; therefor a high percentage of human
+power seems to be absorbed by just keeping the features of Skolelinux
+within the new setting of the version to come. During this process,
+the cogs of Debian Edu are getting more and more professional,
+i.e. harder to understand for novices.</p>
+
+<p><strong>Which free software do you use daily?</strong></p>
+
+<p>LibreOffice, Wikipedia, Openstreetmap, Iceweasel (Mozilla Firefox),
+KMail, Gimp, Inkscape - and of course the Linux Kernel (not only on
+PC, Laptop, Mobile, but also our SAT receiver)</p>
+
+<p><strong>Which strategy do you believe is the right one to use to
+get schools to use free software?</strong></p>
+
+<p><ol>
+
+<li>Support computer science as regular subject in schools to make
+people really "own" their hardware, to make them understand the
+difference between proprietary software products, and free software
+developing.</li>
+
+<li>Make budget baskets corresponding: In Germany's public schools
+there are more or less fixed budgets for IT equipment (including
+licenses), so schools won't benefit from any savings here. This
+privilege is left to private schools which have consequently a large
+share among German Skolelinux schools.</li>
+
+<li>Get free software in the seminars where would-be teachers are
+trained. In many cases, teachers' software customs are respected by
+decision makers rather than the expertise of any IT experts.</li>
+
+<li>Don't limit ourself to free software run natively. Everybody uses
+free software or free licenses (for instance Wikipedia), and this
+general concept should get expanded to free educational content to be
+shared world wide (school books e.g.).</li>
+
+<li>Make clear where ever you can that the market share of free (libre)
+office suites is much above 20 p.c. today, and that you pupils don't
+need to know the "ribbon menu" in order to get employed.</li>
+
+<li>Talk about the difference between freeware and free software.</li>
+
+<li>Spread free software, or even collections of portable free apps
+for USB pen drives. Endorse students to get a legal copy of
+Libreoffice rather than accepting them to use illegal serials. And
+keep sending documents in ODF formats.</li>
+
+</ol></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/intervju">intervju</a>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
+ <div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/First_monitor_calibration_using_ColorHug.html">First monitor calibration using ColorHug</a>
+ </div>
+ <div class="date">
+ 31st May 2012
+ </div>
+ <div class="body">
+ <p>A few days ago my color calibration gadget
+<a href="http://www.hughski.com/index.html">ColorHug</a> arrived in the
+mail, and I've had a few days to test it. As all my machines are
+running Debian Squeeze, where
+<a href="http://packages.qa.debian.org/c/colorhug-client.html">the
+calibration software</a> is missing (it is present in Wheezy and Sid),
+I ran the calibration using the Fedora based live CD. This worked
+just fine. So far I have only done the quick calibration. It was
+slow enough for me, so I will leave the more extensive calibration for
+another day.</p>
+
+<p>After calibration, I get a
+<a href="http://en.wikipedia.org/wiki/ICC_profile">ICC color
+profile</a> file that can be passed to programs understanding such
+tools. KDE do not seem to understand it out of the box, so I searched
+for command line tools to use to load the color profile into X.
+xcalib was the first one I found, and it seem to work fine for single
+monitor setups. But for my video player, a laptop with a flat screen
+attached, it was unable to load the color profile for the correct
+monitor. After searching a bit, I
+<a href="http://ubuntuforums.org/showthread.php?t=1347896">discovered</a>
+that the dispwin tool from the argyll package would do what I wanted,
+and a simple</p>
+
+<p><pre>
+dispwin -d 1 profile.icc
+</pre></p>
+
+<p>later I had the color profile loaded for the correct monitor. The
+result was a bit more pink than I expected. I guess I picked the
+wrong monitor type for the "led" monitor I got, but the result is good
+enough for now.</p>
+
+ </div>
+ <div class="tags">
+
+
+ Tags: <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/SOAP_based_webservice_from_Dell_to_check_server_support_status.html">SOAP based webservice from Dell to check server support status</a>
+ </div>
+ <div class="date">
+ 1st June 2012
+ </div>
+ <div class="body">
+ <p>A few years ago I wrote
+<a href="http://people.skolelinux.org/pere/blog/Checking_server_hardware_support_status_for_Dell__HP_and_IBM_servers.html">how
+to extract support status</a> for your Dell and HP servers. Recently
+I have learned from colleges here at the
+<a href="http://www.uio.no/">University of Oslo</a> that Dell have
+made this even easier, by providing a SOAP based web service. Given
+the service tag, one can now query the Dell servers and get machine
+readable information about the support status. This perl code
+demonstrate how to do it:</p>
+
+<p><pre>
+use strict;
+use warnings;
+use SOAP::Lite;
+use Data::Dumper;
+my $GUID = '11111111-1111-1111-1111-111111111111';
+my $App = 'test';
+my $servicetag = $ARGV[0] or die "Please supply a servicetag. $!\n";
+my ($deal, $latest, @dates);
+my $s = SOAP::Lite
+ -> uri('http://support.dell.com/WebServices/')
+ -> on_action( sub { join '', @_ } )
+ -> proxy('http://xserv.dell.com/services/assetservice.asmx')
+ ;
+my $a = $s->GetAssetInformation(
+ SOAP::Data->name('guid')->value($GUID)->type(''),
+ SOAP::Data->name('applicationName')->value($App)->type(''),
+ SOAP::Data->name('serviceTags')->value($servicetag)->type(''),
+);
+print Dumper($a -> result) ;
+</pre></p>
+
+<p>The output can look like this:</p>
+
+<p><pre>
+$VAR1 = {
+ 'Asset' => {
+ 'Entitlements' => {
+ 'EntitlementData' => [
+ {
+ 'EntitlementType' => 'Expired',
+ 'EndDate' => '2009-07-29T00:00:00',
+ 'Provider' => '',
+ 'StartDate' => '2006-07-29T00:00:00',
+ 'DaysLeft' => '0'
+ },
+ {
+ 'EntitlementType' => 'Expired',
+ 'EndDate' => '2009-07-29T00:00:00',
+ 'Provider' => '',
+ 'StartDate' => '2006-07-29T00:00:00',
+ 'DaysLeft' => '0'
+ },
+ {
+ 'EntitlementType' => 'Expired',
+ 'EndDate' => '2007-07-29T00:00:00',
+ 'Provider' => '',
+ 'StartDate' => '2006-07-29T00:00:00',
+ 'DaysLeft' => '0'
+ }
+ ]
+ },
+ 'AssetHeaderData' => {
+ 'SystemModel' => 'GX620',
+ 'ServiceTag' => '8DSGD2J',
+ 'SystemShipDate' => '2006-07-29T19:00:00-05:00',
+ 'Buid' => '2323',
+ 'Region' => 'Europe',
+ 'SystemID' => 'PLX_GX620',
+ 'SystemType' => 'OptiPlex'
+ }
+ }
+ };
+</pre></p>
+
+<p>I have not been able to find any documentation from Dell about this
+service outside the
+<a href="http://xserv.dell.com/services/assetservice.asmx?op=GetAssetInformation">inline
+documentation</a>, and according to
+<a href="http://iboyd.net/index.php/2012/02/14/updated-dell-warranty-information-script/">one
+comment</a> it can have stability issues, but it is a lot better than
+scraping HTML pages. :)</p>
+
+<p>Wonder if HP and other server vendors have a similar service. If
+you know of one, drop me an email. :)</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/nuug">nuug</a>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
+ <div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Mike_Gabriel.html">Debian Edu interview: Mike Gabriel</a>
+ </div>
+ <div class="date">
+ 2nd June 2012
+ </div>
+ <div class="body">
+ <p>Back in 2010, Mike Gabriel showed up on the
+<a href="http://www.skolelinux.org/">Debian Edu and Skolelinux</a>
+mailing list. He quickly proved to be a valuable developer, and
+thanks to his tireless effort we now have Kerberos integrated into the
+<a href="http://www.debian.org/News/2012/20120311.html">Debian Edu
+Squeeze</a> version.</p>
+
+<p><strong>Who are you, and how do you spend your days?</strong></p>
+
+<p>My name is Mike Gabriel, I am 38 years old and live near Kiel,
+Schleswig-Holstein, Germany. I live together with a wonderful partner
+(Angela Fuß) and two own children and two bonus children (contributed
+by Angela).</p>
+
+<p>During the day I am part-time employed as a system administrator
+and part-time working as an IT consultant. The consultancy work
+touches free software topics wherever and whenever possible. During
+the nights I am a free software developer. In the gaps I also train in
+becoming an osteopath.</p>
+
+<p>Starting in 2010 we (Andreas Buchholz, Angela Fuß, Mike Gabriel)
+have set up a free software project in the area of Kiel that aims at
+introducing free software into schools. The project's name is
+"IT-Zukunft Schule" (IT future for schools). The project links IT
+skills with communication skills.</p>
+
+<p><strong>How did you get in contact with the Skolelinux/Debian Edu
+project?</strong></p>
+
+<p>While preparing our own customised Linux distribution for
+"IT-Zukunft Schule" we were repeatedly asked if we really wanted to
+reinvent the wheel. What schools really need is already available,
+people said. From this impulse we started evaluating other Linux
+distributions that target being used for school networks.</p>
+
+<p>At the end we short-listed two approaches and compared them: a
+commercial Linux distribution developed by a company in Bremen,
+Germany, and Skolelinux / Debian Edu. Between 12/2010 and 03/2011 we
+went to several events and met people being responsible for marketing
+and development of either of the distributions. Skolelinux / Debian
+Edu was by far much more convincing compared to the other product that
+got short-listed beforehand--across the full spectrum. What was most
+attractive for me personally: the perspective of collaboration within
+the developmental branch of the Debian Edu project itself.</p>
+
+<p>In parallel with this, we talked to many local and not-so-local
+people. People teaching at schools, headmasters, politicians, data
+protection experts, other IT professionals.</p>
+
+<p>We came to two conclusions:</p>
+
+<p>First, a technical conclusion: What schools need is available in
+bits and pieces here and there, and none of the solutions really fit
+by 100%. Any school we have seen has a very individual IT setup
+whereas most of each school's requirements could mapped by a standard
+IT solution. The requirement to this IT solution is flexibility and
+customisability, so that individual adaptations here and there are
+possible. In terms of re-distributing and rolling out such a
+standardised IT system for schools (a system that is still to some
+degree customisable) there is still a lot of work to do here
+locally. Debian Edu / Skolelinux has been our choice as the starting
+point.</p>
+
+<p>Second, a holistic conclusion: What schools need does not exist at
+all (or we missed it so far). There are several technical solutions
+for handling IT at schools that tend to make a good impression. What
+has been missing completely here in Germany, though, is the enrolment
+of people into using IT and teaching with IT. "IT-Zukunft Schule"
+tries to provide an approach for this.</p>
+
+<p>Only some schools have some sort of a media concept which explains,
+defines and gives guidance on how to use IT in class. Most schools in
+Northern Germany do not have an IT service provider, the school's IT
+equipment is managed by one or (if the school is lucky) two (admin)
+teachers, most of the workload these admin teachers get done in there
+spare time.</p>
+
+<p>We were surprised that only a very few admin teachers were
+networked with colleagues from other schools. Basically, every school
+here around has its individual approach of providing IT equipment to
+teachers and students and the exchange of ideas has been quasi
+non-existent until 2010/2011.</p>
+
+<p>Quite some (non-admin) teachers try to avoid using IT technology in
+class as a learning medium completely. Several reasons for this
+avoidance do exist.</p>
+
+<p>We discovered that no-one has ever taken a closer look at this
+social part of IT management in schools, so far. On our quest journey
+for a technical IT solution for schools, we discussed this issue with
+several teachers, headmasters, politicians, other IT professionals and
+they all confirmed: a holistic approach of considering IT management
+at schools, an approach that includes the people in place, will be new
+and probably a gain for all.</p>
+
+<p><strong>What do you see as the advantages of Skolelinux/Debian
+Edu?</strong></p>
+
+<p>There is a list of advantages: international context, openness to
+any kind of contributions, do-ocracy policy, the closeness to Debian,
+the different installation scenarios possible (from stand-alone
+workstation to complex multi-server sites), the transparency within
+project communication, honest communication within the group of
+developers, etc.</p>
+
+<p><strong>What do you see as the disadvantages of Skolelinux/Debian
+Edu?</strong></p>
+
+<p>Every coin has two sides:</p>
+
+<p>Technically: <a href="http://bugs.debian.org/311188">BTS issue
+#311188</a>, tricky upgradability of a Debian Edu main server, network
+client installations on top of a plain vanilla Debian installation
+should become possible sometime in the near future, one could think
+about splitting the very complex package debian-edu-config into
+several portions (to make it easier for new developers to
+contribute).</p>
+
+<p>Another issue I see is that we (as Debian Edu developers) should
+find out more about the network of people who do the marketing for
+Debian Edu / Skolelinux. There is a very active group in Germany
+promoting Skolelinux on the bigger Linux Days within Germany. Are
+there other groups like that in other countries? How can we bring
+these marketing people together (marketing group A with group B and
+all of them with the group of Debian Edu developers)? During the last
+meeting of the German Skolelinux group, I got the impression of people
+there being rather disconnected from the development department of
+Debian Edu / Skolelinux.</p>
+
+<p><strong>Which free software do you use daily?</strong></p>
+
+<p>For my daily business, I do not use commercial software at all.</p>
+
+<p>For normal stuff I use Iceweasel/Firefox, Libreoffice.org. For
+serious text writing I prefer LaTeX. I use gimp, inkscape, scribus for
+more artistic tasks. I run virtual machines in KVM and Virtualbox.</p>
+
+<p>I am one of the upstream developers of X2Go. In 2010 I started the
+development of a Python based X2Go Client, called PyHoca-GUI.
+PyHoca-GUI has brought forth a Python X2Go Client API that currently
+is being integrated in Ubuntu's software center.</p>
+
+<p>For communications I have my own Kolab server running using Horde
+as web-based groupware client. For IRC I love to use irssi, for Jabber
+I have several clients that I use, mostly pidgin, though. I am also
+the Debian maintainer of Coccinella, a Jabber-based interactive
+whiteboard.</p>
+
+<p>My favourite terminal emulator is KDE's Yakuake.</p>
+
+<p><strong>Which strategy do you believe is the right one to use to
+get schools to use free software?</strong></p>
+
+<p>Communicate, communicate, communicate. Enrol people, enrol people,
+enrol people.</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/intervju">intervju</a>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
+ <div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/Web_service_to_look_up_HP_and_Dell_computer_hardware_support_status.html">Web service to look up HP and Dell computer hardware support status</a>
+ </div>
+ <div class="date">
+ 6th June 2012
+ </div>
+ <div class="body">
+ <p>A few days ago
+<a href="http://people.skolelinux.org/pere/blog/SOAP_based_webservice_from_Dell_to_check_server_support_status.html">I
+reported how to get</a> the support status out of Dell using an
+unofficial and undocumented SOAP API, which I since have found out was
+<a href="http://lists.us.dell.com/pipermail/linux-poweredge/2012-February/045959.html">discovered
+by Daniel De Marco in february</a>. Combined with my web scraping
+code for HP, Dell and IBM
+<a href="http://people.skolelinux.org/pere/blog/Checking_server_hardware_support_status_for_Dell__HP_and_IBM_servers.html">from
+2009</a>, I got inspired and wrote
+<a href="https://views.scraperwiki.com/run/computer-hardware-support-status/">a
+web service</a> based on Scraperwiki to make it easy to look up the
+support status and get a machine readable result back.</p>
+
+<p>This is what it look like at the moment when asking for the JSON
+output:
+
+<blockquote><pre>
+% GET <a href="https://views.scraperwiki.com/run/computer-hardware-support-status/?format=json&vendor=Dell&servicetag=2v1xwn1">https://views.scraperwiki.com/run/computer-hardware-support-status/?format=json&vendor=Dell&servicetag=2v1xwn1</a>
+supportstatus({"servicetag": "2v1xwn1", "warrantyend": "2013-11-24", "shipped": "2010-11-24", "scrapestamputc": "2012-06-06T20:26:56.965847", "scrapedurl": "http://143.166.84.118/services/assetservice.asmx?WSDL", "vendor": "Dell", "productid": ""})
+%
+</pre></blockquote>
+
+<p>It currently support Dell and HP, and I am hoping for help to add
+support for other vendors. The python source is available on
+Scraperwiki and I welcome help with adding more features.</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/nuug">nuug</a>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
+ <div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/TV_with_face_recognition__for_improved_viewer_experience.html">TV with face recognition, for improved viewer experience</a>
+ </div>
+ <div class="date">
+ 9th June 2012
+ </div>
+ <div class="body">
+ <p>Slashdot got a story about Intel planning a
+<a href="http://entertainment.slashdot.org/story/12/06/09/0012247/intel-to-launch-tv-service-with-facial-recognition-by-end-of-the-year">TV
+with face recognition</a> to recognise the viewer, and it occurred to
+me that it would be more interesting to turn it around, and do face
+recognition on the TV image itself. It could let the viewer know who
+is present on the screen, and perhaps look up their credibility,
+company affiliation, previous appearances etc for the viewer to better
+evaluate what is being said and done. That would be a feature I would
+be willing to pay for.</p>
+
+<p>I would not be willing to pay for a TV that point a camera on my
+household, like the big brother feature apparently proposed by Intel.
+It is the telescreen idea fetched straight out of the book
+<a href="http://gutenberg.net.au/ebooks01/0100021.txt">1984 by George
+Orwell</a>.</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/surveillance">surveillance</a>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
+ <div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/Debian_Edu___some_ideas_for_the_future_versions.html">Debian Edu - some ideas for the future versions</a>
+ </div>
+ <div class="date">
+ 11th June 2012
+ </div>
+ <div class="body">
+ <p>During my work on
+<a href="http://www.debian.org/News/2012/20120311.nb.html">Debian Edu
+based on Squeeze</a>, I came across some issues that should be
+addressed in the Wheezy release. I finally found time to wrap up my
+notes and provide quick summary of what I found, with a bit
+explanation.</p>
+
+<p><ul>
+
+<li>We need to rewrite our package installation framework, as tasksel
+changed from using tasksel tasks to using meta packages (aka packages
+with dependencies like our education-* packages), and our installation
+system depend on tasksel tasks in
+/usr/share/tasksel/debian-edu-tasks.desc for package
+installation.</li>
+
+<li>Enable Kerberos login for more services. Now with the Kerberos
+foundation in place, we should use it to get single sign on with more
+services, and avoiding unneeded password / login questions. We should
+at least try to enable it for these services:
+<ul>
+
+ <li>CUPS for admins to add/configure printers and users when using
+ quotas.</li>
+ <li>Nagios for admins checking the system status.</li>
+ <li>GOsa for admins updating LDAP and users changing their passwords.</li>
+ <li>LDAP for admins updating LDAP.</li>
+ <li>Squid for users when exam mode / filtering is active.</li>
+ <li>ssh for admins and users to save a password prompt.</li>
+
+</ul></li>
+
+<li>When we move GOsa to use Kerberos instead of LDAP bind to
+authenticate users, we should try to block or at least limit access to
+use LDAP bind for authentication, to ensure Kerberos is used when it
+is intended, and nothing fall back to using the less safe LDAP bind</li>
+
+<li>Merge debian-edu-config and debian-edu-install. The split made
+sense when d-e-install did a lot more, but these days it is just an
+inconvenience when we update the debconf preseeding values.</li>
+
+<li>Fix partman-auto to allow us to abort the installation before
+touching the disk if the disk is too small. This is
+<a href="http://bugs.debian.org/653305">BTS report #653305</a> and the
+d-i developers are fine with the patch and someone just need to apply
+it and upload. After this is done we need to adjust
+debian-edu-install to use this new hook.</li>
+
+<li>Adjust to new LTSP framework (boot time config instead of install
+time config). LTSP changed its design, and our hooks to install
+packages and update the configuration is most likely not going to work
+in Wheezy.
+
+<li>Consider switching to NBD instead of NFS for LTSP root, to allow
+the Kernel to cache files in its normal file cache, possibly speeding
+up KDE login on slow networks.</li>
+
+<li>Make it possible to create expired user passwords that need to
+change on first login. This is useful when handing out password on
+paper, to make sure only the user know the password. This require
+fixes to the PAM handling of kdm and gdm.</li>
+
+<li>Make GUI for adding new machines automatically from sitesummary.
+The current command line script is not very friendly to people most
+familiar with GUIs. This should probably be integrated into GOsa to
+have it available where the admin will be looking for it..</li>
+
+<li>We should find way for Nagios to check that the DHCP service
+actually is working (as in handling out IP addresses). None of the
+Nagios checks I have found so far have been working for me.</li>
+
+<li>We should switch from libpam-nss-ldapd to sssd for all profiles
+using LDAP, and not only on for roaming workstations, to have less
+packages to configure and consistent setup across all profiles.</li>
+
+<li>We should configure Kerberos to update LDAP and Samba password
+when changing password using the Kerberos protocol. The hook was
+requested in <a href="http://bugs.debian.org/588968">BTS report
+#588968</a> and is now available in Wheezy. We might need to write a
+MIT Kerberos plugin in C to get this.</li>
+
+<li>We should clean up the set of applications installed by default.
+<ul>
+
+<li>reduce the number of chemistry visualisers</li>
+<li>consider dropping xpaint</li>
+<li>and probably more?</li>
+</ul></li>
+
+<li>Some hardware need external firmware to work properly. This is
+mostly the case for WiFi network cards, but there are some other
+examples too. For popular laptops to work out of the box, such
+firmware need to be installed from non-free, and we should provide
+some GUI to do this. Ubuntu already have this implemented, and we
+could consider using their packages. At the moment we have some
+command line script to do this (one for the running system, another
+for the LTSP chroot).</li>
+
+
+<li>In Squeeze, we provide KDE, Gnome and LXDE as desktop options. We
+should extend the list to Xfce and Sugar, and preferably find a way to
+install several and allow the admin or the user to select which one to
+use.</li>
+
+<li>The golearn tool from the goplay package make it easy to check out
+interesting educational packages. We should work on the package
+tagging in Debian to ensure it represent all the useful educational
+packages, and extend the tool to allow it to use packagekit to install
+new applications with a simple mouse click.</li>
+
+<li>The Squeeze version got half a exam solution already in place,
+with the introduction of iptable based network blocking, but for it to
+be a complete exam solution the Squid proxy need to enable
+filtering/blocking as well when the exam mode is enabled. We should
+implement a way to easily enable this for the schools that want it,
+instead of the "it is documented" method of today.</li>
+
+<li>A feature used in several schools is the ability for a teacher to
+"take over" the desktop of individual or all computers in the room.
+There are at least three implementations,
+<a href="italc.sourceforge.net/">italc</a>,
+<a href="http://www.itais.net/help/en/">controlaula</a> og
+<a href="http://www.epoptes.org/">epoptes</a> and we should pick one of
+them and make it trivial to set it up in a school. The challenges is
+how to distribute crypto keys and how to group computers in one room
+and how to set up which machine/user can control the machines in a
+given room.</li>
+
+<li>Tablets and surf boards are getting more and more popular, and we
+should look into providing a good solution for integrating these into
+the Debian Edu network. Not quite sure how. Perhaps we should
+provide a installation profile with better touch screen support for
+them, or add some sync services to allow them to exchange
+configuration and data with the central server. This should be
+investigated.</li>
+
+</ul></p>
+
+<p>I guess we will discover more as we continue to work on the Wheezy
+version.</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>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
+ <div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/Song_book_for_Computer_Scientists.html">Song book for Computer Scientists</a>
+ </div>
+ <div class="date">
+ 24th June 2012
+ </div>
+ <div class="body">
+ <p>Many years ago, while studying Computer Science at the
+<a href="http://www.uit.no/">University of Tromsø</a>, I started
+collecting computer related songs for use at parties. The original
+version was written in LaTeX, but a few years ago I got help from
+Håkon W. Lie, one of the inventors of W3C CSS, to convert it to HTML
+while keeping the ability to create a nice book in PDF format. I have
+not had time to maintain the book for a while now, and guess I should
+put it up on some public version control repository where others can
+help me extend and update the book. If anyone is volunteering to help
+me with this, send me an email. Also let me know if there are songs
+missing in my book.</p>
+
+<p>I have not mentioned the book on my blog so far, and it occured to
+me today that I really should let all my readers share the joys of
+singing out load about programming, computers and computer networks.
+Especially now that <a href="http://debconf12.debconf.org/">Debconf
+12</a> is about to start (and I am not going). Want to sing? Check
+out <a href="http://www.hungry.com/~pere/cs-songbook/">Petter's
+Computer Science Songbook</a>.
+
+ </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/multimedia">multimedia</a>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
+ <div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Jos__Luis_Redrejo_Rodr_guez.html">Debian Edu interview: José Luis Redrejo Rodríguez</a>
+ </div>
+ <div class="date">
+ 26th June 2012
+ </div>
+ <div class="body">
+ <p>I've been too busy at home, but finally I found time to wrap up
+another interview with the people behind
+<a href="http://www.skolelinux.org/">Debian Edu and Skolelinux</a>.
+This time we get to know José Luis Redrejo Rodríguez, one of our great
+helpers from Spain. His effort was the reason we added support for
+several desktop types (KDE, Gnome and most recently LXDE) in Debian
+Edu, and have all of these available in the recently published
+<a href="http://www.debian.org/News/2012/20120311.html">Debian Edu
+Squeeze</a> version.</p>
+
+<p><strong>Who are you, and how do you spend your days?</strong></p>
+
+<p>I'm a father, teacher and engineer who is working for the Education
+ministry of the Region of Extremadura (Spain) in the implementation of
+ICT in schools</p>
+
+<p><strong>How did you get in contact with the Skolelinux/Debian Edu
+project?</strong></p>
+
+<p>At 2006, I verified that both, we in Extremadura and Skolelinux
+project, had been working in parallel for some years, doing very
+similar things, using very similar tools and with similar targets, so
+I decided it was time to join forces as much as possible.</p>
+
+<p><strong>What do you see as the advantages of Skolelinux/Debian
+Edu?</strong></p>
+
+<p>A community of highly skilled experts working together, with a
+really open schema of collaboration and work. I really love the
+concepts of Do-ocracy and Merit-ocracy and the way these concepts are
+been used everyday inside Debian Edu.</p>
+
+<p><strong>What do you see as the disadvantages of Skolelinux/Debian
+Edu?</strong></p>
+
+<p>Sometimes the differences in the implementations, laws or
+economical and technical resources in the different countries don't
+allow us to agree in the same solution for all of us, and several
+approaches are needed, what is a waste of effort. Also, there is a
+lack of more man power to be able to follow the fast evolution of the
+technologies in school.</p>
+
+<p><strong>Which free software do you use daily?</strong></p>
+
+<p>Debian, of course, and due to my kind of job I am most of my time
+between Iceweasel, <a href="http://www.geany.org/">Geany</a> and
+<a href="http://www.ohloh.net/p/gnome-terminator">Terminator</a>.</p>
+
+<p><strong>Which strategy do you believe is the right one to use to
+get schools to use free software?</strong></p>
+
+<p>I think there is not a single strategy because there are very
+different scenarios: schools with mixed proprietary and free
+environments, schools using only workstations, other schools using
+laptops, netbooks, tablets, interactive white-boards, etc.</p>
+
+<p>Also the range of ages of the students is very broad and you can
+not use the same solutions for primary schools and secondary or even
+universities. So different strategies are needed.</p>
+
+<p>But, looking at these differences, and looking back to the things
+we've done and implemented, and the places were we have spent most of
+our forces, I think we should focus as much as possible in free
+multi-platform environments, using only standards tools, and moving
+more and more to Internet or network solutions that could be deployed
+using wireless. I think we'll see more and more personal devices in
+the schools, devices the students and teachers will take home with
+them, so the solutions must be able to be taken at home and continue
+working there.</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/intervju">intervju</a>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
projects / homepage.git / blobdiff