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   5   <title>Petter Reinholdtsen</title>
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  12  <div class="title">
  13   <h1>
  14        <a href="http://people.skolelinux.org/pere/blog/">Petter Reinholdtsen</a>
  15
  16   </h1>
  17
  18  </div>
  19
  20
  21
  22  <div class="entry">
  23   <div class="title"><a href="http://people.skolelinux.org/pere/blog/Parallellized_boot_is_now_the_default_in_Debian_unstable.html">Parallellized boot is now the default in Debian/unstable</a></div>
  24   <div class="date">2010-05-14 22:40</div>
  25   <div class="body">
  26 <p>Since this evening, parallel booting is the default in
  27 Debian/unstable for machines using dependency based boot sequencing.
  28 Apparently the testing of concurrent booting has been wider than
  29 expected, if I am to believe the
  30 <a href="http://lists.debian.org/debian-devel/2010/05/msg00122.html">input
  31 on debian-devel@</a>, and I concluded a few days ago to move forward
  32 with the feature this weekend, to give us some time to detect any
  33 remaining problems before Squeeze is frozen.  If serious problems are
  34 detected, it is simple to change the default back to sequential boot.
  35 The upload of the new sysvinit package also activate a new upstream
  36 version.</p>
  37
  38 More information about
  39 <a href="http://wiki.debian.org/LSBInitScripts/DependencyBasedBoot">dependency
  40 based boot sequencing</a> is available from the Debian wiki.  It is
  41 currently possible to disable parallel booting when one run into
  42 problems caused by it, by adding this line to /etc/default/rcS:</p>
  43
  44 <blockquote><pre>
  45 CONCURRENCY=none
  46 </pre></blockquote>
  47
  48 <p>If you report any problems with dependencies in init.d scripts to
  49 the BTS, please usertag the report to get it to show up at
  50 <a href="http://bugs.debian.org/cgi-bin/pkgreport.cgi?users=initscripts-ng-devel@lists.alioth.debian.org">the
  51 list of usertagged bugs related to this</a>.</p>
  52 </div>
  53   <div class="tags">
  54
  55
  56
  57    Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
  58
  59   </div>
  60  </div>
  61  <div class="padding"></div>
  62
  63  <div class="entry">
  64   <div class="title"><a href="http://people.skolelinux.org/pere/blog/Sitesummary_tip__Listing_MAC_address_of_all_clients.html">Sitesummary tip: Listing MAC address of all clients</a></div>
  65   <div class="date">2010-05-14 21:10</div>
  66   <div class="body">
  67 <p>In the recent Debian Edu versions, the
  68 <a href="http://wiki.debian.org/DebianEdu/HowTo/SiteSummary">sitesummary
  69 system</a> is used to keep track of the machines in the school
  70 network.  Each machine will automatically report its status to the
  71 central server after boot and once per night.  The network setup is
  72 also reported, and using this information it is possible to get the
  73 MAC address of all network interfaces in the machines.  This is useful
  74 to update the DHCP configuration.</p>
  75
  76 <p>To give some idea how to use sitesummary, here is a one-liner to
  77 ist all MAC addresses of all machines reporting to sitesummary.  Run
  78 this on the collector host:</p>
  79
  80 <blockquote><pre>
  81 perl -MSiteSummary -e 'for_all_hosts(sub { print join(" ", get_macaddresses(shift)), "\n"; });'
  82 </pre></blockquote>
  83
  84 <p>This will list all MAC addresses assosiated with all machine, one
  85 line per machine and with space between the MAC addresses.</p>
  86
  87 <p>To allow system administrators easier job at adding static DHCP
  88 addresses for hosts, it would be possible to extend this to fetch
  89 machine information from sitesummary and update the DHCP and DNS
  90 tables in LDAP using this information.  Such tool is unfortunately not
  91 written yet.</p>
  92 </div>
  93   <div class="tags">
  94
  95
  96
  97    Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/sitesummary">sitesummary</a>.
  98
  99   </div>
 100  </div>
 101  <div class="padding"></div>
 102
 103  <div class="entry">
 104   <div class="title"><a href="http://people.skolelinux.org/pere/blog/systemd__an_interesting_alternative_to_upstart.html">systemd, an interesting alternative to upstart</a></div>
 105   <div class="date">2010-05-13 22:20</div>
 106   <div class="body">
 107 <p>The last few days a new boot system called
 108 <a href="http://www.freedesktop.org/wiki/Software/systemd">systemd</a>
 109 has been
 110 <a href="http://0pointer.de/blog/projects/systemd.html">introduced</a>
 111
 112 to the free software world.  I have not yet had time to play around
 113 with it, but it seem to be a very interesting alternative to
 114 <a href="http://upstart.ubuntu.com/">upstart</a>, and might prove to be
 115 a good alternative for Debian when we are able to switch to an event
 116 based boot system.  Tollef is
 117 <a href="http://bugs.debian.org/580814">in the process</a> of getting
 118 systemd into Debian, and I look forward to seeing how well it work.  I
 119 like the fact that systemd handles init.d scripts with dependency
 120 information natively, allowing them to run in parallel where upstart
 121 at the moment do not.</p>
 122
 123 <p>Unfortunately do systemd have the same problem as upstart regarding
 124 platform support.  It only work on recent Linux kernels, and also need
 125 some new kernel features enabled to function properly.  This means
 126 kFreeBSD and Hurd ports of Debian will need a port or a different boot
 127 system.  Not sure how that will be handled if systemd proves to be the
 128 way forward.</p>
 129
 130 <p>In the mean time, based on the
 131 <a href="http://lists.debian.org/debian-devel/2010/05/msg00122.html">input
 132 on debian-devel@</a> regarding parallel booting in Debian, I have
 133 decided to enable full parallel booting as the default in Debian as
 134 soon as possible (probably this weekend or early next week), to see if
 135 there are any remaining serious bugs in the init.d dependencies.  A
 136 new version of the sysvinit package implementing this change is
 137 already in experimental.  If all go well, Squeeze will be released
 138 with parallel booting enabled by default.</p>
 139 </div>
 140   <div class="tags">
 141
 142
 143
 144    Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>.
 145
 146   </div>
 147  </div>
 148  <div class="padding"></div>
 149
 150  <div class="entry">
 151   <div class="title"><a href="http://people.skolelinux.org/pere/blog/Parallellizing_the_boot_in_Debian_Squeeze___ready_for_wider_testing.html">Parallellizing the boot in Debian Squeeze - ready for wider testing</a></div>
 152   <div class="date">2010-05-06 23:25</div>
 153   <div class="body">
 154 <p>These days, the init.d script dependencies in Squeeze are quite
 155 complete, so complete that it is actually possible to run all the
 156 init.d scripts in parallell based on these dependencies.  If you want
 157 to test your Squeeze system, make sure
 158 <a href="http://wiki.debian.org/LSBInitScripts/DependencyBasedBoot">dependency
 159 based boot sequencing</a> is enabled, and add this line to
 160 /etc/default/rcS:</p>
 161
 162 <blockquote><pre>
 163 CONCURRENCY=makefile
 164 </pre></blockquote>
 165
 166 <p>That is it.  It will cause sysv-rc to use the startpar tool to run
 167 scripts in parallel using the dependency information stored in
 168 /etc/init.d/.depend.boot, /etc/init.d/.depend.start and
 169 /etc/init.d/.depend.stop to order the scripts.  Startpar is configured
 170 to try to start the kdm and gdm scripts as early as possible, and will
 171 start the facilities required by kdm or gdm as early as possible to
 172 make this happen.</p>
 173
 174 <p>Give it a try, and see if you like the result.  If some services
 175 fail to start properly, it is most likely because they have incomplete
 176 init.d script dependencies in their startup script (or some of their
 177 dependent scripts have incomplete dependencies).  Report bugs and get
 178 the package maintainers to fix it. :)</p>
 179
 180 <p>Running scripts in parallel could be the default in Debian when we
 181 manage to get the init.d script dependencies complete and correct.  I
 182 expect we will get there in Squeeze+1, if we get manage to test and
 183 fix the remaining issues.</p>
 184
 185 <p>If you report any problems with dependencies in init.d scripts to
 186 the BTS, please usertag the report to get it to show up at
 187 <a href="http://bugs.debian.org/cgi-bin/pkgreport.cgi?users=initscripts-ng-devel@lists.alioth.debian.org">the
 188 list of usertagged bugs related to this</a>.</p>
 189 </div>
 190   <div class="tags">
 191
 192
 193
 194    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>.
 195
 196   </div>
 197  </div>
 198  <div class="padding"></div>
 199
 200  <div class="entry">
 201   <div class="title"><a href="http://people.skolelinux.org/pere/blog/Forcing_new_users_to_change_their_password_on_first_login.html">Forcing new users to change their password on first login</a></div>
 202   <div class="date">2010-05-02 13:47</div>
 203   <div class="body">
 204 <p>One interesting feature in Active Directory, is the ability to
 205 create a new user with an expired password, and thus force the user to
 206 change the password on the first login attempt.</p>
 207
 208 <p>I'm not quite sure how to do that with the LDAP setup in Debian
 209 Edu, but did some initial testing with a local account.  The account
 210 and password aging information is available in /etc/shadow, but
 211 unfortunately, it is not possible to specify an expiration time for
 212 passwords, only a maximum age for passwords.</p>
 213
 214 <p>A freshly created account (using adduser test) will have these
 215 settings in /etc/shadow:</p>
 216
 217 <blockquote><pre>
 218 root@tjener:~# chage -l test
 219 Last password change                                    : May 02, 2010
 220 Password expires                                        : never
 221 Password inactive                                       : never
 222 Account expires                                         : never
 223 Minimum number of days between password change          : 0
 224 Maximum number of days between password change          : 99999
 225 Number of days of warning before password expires       : 7
 226 root@tjener:~#
 227 </pre></blockquote>
 228
 229 <p>The only way I could come up with to create a user with an expired
 230 account, is to change the date of the last password change to the
 231 lowest value possible (January 1th 1970), and the maximum password age
 232 to the difference in days between that date and today.  To make it
 233 simple, I went for 30 years (30 * 365 = 10950) and January 2th (to
 234 avoid testing if 0 is a valid value).</p>
 235
 236 <p>After using these commands to set it up, it seem to work as
 237 intended:</p>
 238
 239 <blockquote><pre>
 240 root@tjener:~# chage -d 1 test; chage -M 10950 test
 241 root@tjener:~# chage -l test
 242 Last password change                                    : Jan 02, 1970
 243 Password expires                                        : never
 244 Password inactive                                       : never
 245 Account expires                                         : never
 246 Minimum number of days between password change          : 0
 247 Maximum number of days between password change          : 10950
 248 Number of days of warning before password expires       : 7
 249 root@tjener:~#
 250 </pre></blockquote>
 251
 252 <p>So far I have tested this with ssh and console, and kdm (in
 253 Squeeze) login, and all ask for a new password before login in the
 254 user (with ssh, I was thrown out and had to log in again).</p>
 255
 256 <p>Perhaps we should set up something similar for Debian Edu, to make
 257 sure only the user itself have the account password?</p>
 258
 259 <p>If you want to comment on or help out with implementing this for
 260 Debian Edu, please contact us on debian-edu@lists.debian.org.</p>
 261
 262 <p>Update 2010-05-02 17:20: Paul Tötterman tells me on IRC that the
 263 shadow(8) page in Debian/testing now state that setting the date of
 264 last password change to zero (0) will force the password to be changed
 265 on the first login.  This was not mentioned in the manual in Lenny, so
 266 I did not notice this in my initial testing.  I have tested it on
 267 Squeeze, and '<tt>chage -d 0 username</tt>' do work there.  I have not
 268 tested it on Lenny yet.</p>
 269
 270 <p>Update 2010-05-02-19:05: Jim Paris tells me via email that an
 271 equivalent command to expire a password is '<tt>passwd -e
 272 username</tt>', which insert zero into the date of the last password
 273 change.</p>
 274 </div>
 275   <div class="tags">
 276
 277
 278
 279    Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>, <a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet</a>.
 280
 281   </div>
 282  </div>
 283  <div class="padding"></div>
 284
 285  <div class="entry">
 286   <div class="title"><a href="http://people.skolelinux.org/pere/blog/Thoughts_on_roaming_laptop_setup_for_Debian_Edu.html">Thoughts on roaming laptop setup for Debian Edu</a></div>
 287   <div class="date">2010-04-28 20:40</div>
 288   <div class="body">
 289 <p>For some years now, I have wondered how we should handle laptops in
 290 Debian Edu.  The Debian Edu infrastructure is mostly designed to
 291 handle stationary computers, and less suited for computers that come
 292 and go.</p>
 293
 294 <p>Now I finally believe I have an sensible idea on how to adjust
 295 Debian Edu for laptops, by introducing a new profile for them, for
 296 example called Roaming Workstations.  Here are my thought on this.
 297 The setup would consist of the following:</p>
 298
 299 <ul>
 300
 301  <li>During installation, the user name of the owner / primary user of
 302    the laptop is requested and a local home directory is set up for
 303    the user, with uid and gid information fetched from the LDAP
 304    server.  This allow the user to work also when offline.  The
 305    central home directory can be available in a subdirectory on
 306    request, for example mounted via CIFS.  It could be mounted
 307    automatically when a user log in while on the Debian Edu network,
 308    and unmounted when the machine is taken away (network down,
 309    hibernate, etc), it can be set up to do automatic mounting on
 310    request (using autofs), or perhaps some GUI button on the desktop
 311    can be used to access it when needed.  Perhaps it is enough to use
 312    the fish protocol in KDE?</li>
 313
 314  <li>Password checking is set up to use LDAP or Kerberos
 315    authentication when the machine is on the Debian Edu network, and
 316    to cache the password for offline checking when the machine unable
 317    to reach the LDAP or Kerberos server.  This can be done using
 318    <a href="http://www.padl.com/OSS/pam_ccreds.html">libpam-ccreds</a>
 319    or the Fedora developed
 320    <a href="https://fedoraproject.org/wiki/Features/SSSD">System
 321    Security Services Daemon</a> packages.</li>
 322
 323  <li>File synchronisation with the central home directory is set up
 324    using a shared directory in both the local and the central home
 325    directory, using unison.</li>
 326
 327  <li>Printing should be set up to print to all printers broadcasting
 328    their existence on the local network, and should then work out of
 329    the box with CUPS.  For sites needing accurate printer quotas, some
 330    system with Kerberos authentication or printing via ssh could be
 331    implemented.</li>
 332
 333  <li>For users that should have local root access to their laptop,
 334    sudo should be used to allow this to the local user.</li>
 335
 336  <li>It would be nice if user and group information from LDAP is
 337    cached on the client, but given that there are entries for the
 338    local user and primary group in /etc/, it should not be needed.</li>
 339
 340 </ul>
 341
 342 <p>I believe all the pieces to implement this are in Debian/testing at
 343 the moment.  If we work quickly, we should be able to get this ready
 344 in time for the Squeeze release to freeze.  Some of the pieces need
 345 tweaking, like libpam-ccreds should get support for pam-auth-update
 346 (<a href="http://bugs.debian.org/566718">#566718</a>) and nslcd (or
 347 perhaps debian-edu-config) should get some integration code to stop
 348 its daemon when the LDAP server is unavailable to avoid long timeouts
 349 when disconnected from the net.  If we get Kerberos enabled, we need
 350 to make sure we avoid long timeouts there too.</p>
 351
 352 <p>If you want to help out with implementing this for Debian Edu,
 353 please contact us on debian-edu@lists.debian.org.</p>
 354 </div>
 355   <div class="tags">
 356
 357
 358
 359    Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>.
 360
 361   </div>
 362  </div>
 363  <div class="padding"></div>
 364
 365  <div class="entry">
 366   <div class="title"><a href="http://people.skolelinux.org/pere/blog/Great_book___Content__Selected_Essays_on_Technology__Creativity__Copyright__and_the_Future_of_the_Future_.html">Great book: "Content: Selected Essays on Technology, Creativity, Copyright, and the Future of the Future"</a></div>
 367   <div class="date">2010-04-19 17:10</div>
 368   <div class="body">
 369 <p>The last few weeks i have had the pleasure of reading a
 370 thought-provoking collection of essays by Cory Doctorow, on topics
 371 touching copyright, virtual worlds, the future of man when the
 372 conscience mind can be duplicated into a computer and many more. The
 373 book titled "Content: Selected Essays on Technology, Creativity,
 374 Copyright, and the Future of the Future" is available with few
 375 restrictions on the web, for example from
 376 <a href="http://craphound.com/content/">his own site</a>. I read the
 377 epub-version from
 378 <a href="http://www.feedbooks.com/book/2883">feedbooks</a> using
 379 <a href="http://www.fbreader.org/">fbreader</a> and my N810. I
 380 strongly recommend this book.</p>
 381 </div>
 382   <div class="tags">
 383
 384
 385
 386    Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/fildeling">fildeling</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>, <a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett</a>, <a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern</a>, <a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet</a>, <a href="http://people.skolelinux.org/pere/blog/tags/web">web</a>.
 387
 388   </div>
 389  </div>
 390  <div class="padding"></div>
 391
 392  <div class="entry">
 393   <div class="title"><a href="http://people.skolelinux.org/pere/blog/Kerberos_for_Debian_Edu_Squeeze_.html">Kerberos for Debian Edu/Squeeze?</a></div>
 394   <div class="date">2010-04-14 17:20</div>
 395   <div class="body">
 396 <p><a href="http://www.nuug.no/aktiviteter/20100413-kerberos/">Yesterdays
 397 NUUG presentation</a> about Kerberos was inspiring, and reminded me
 398 about the need to start using Kerberos in Skolelinux.  Setting up a
 399 Kerberos server seem to be straight forward, and if we get this in
 400 place a long time before the Squeeze version of Debian freezes, we
 401 have a chance to migrate Skolelinux away from NFSv3 for the home
 402 directories, and over to an architecture where the infrastructure do
 403 not have to trust IP addresses and machines, and instead can trust
 404 users and cryptographic keys instead.</p>
 405
 406 <p>A challenge will be integration and administration.  Is there a
 407 Kerberos implementation for Debian where one can control the
 408 administration access in Kerberos using LDAP groups?  With it, the
 409 school administration will have to maintain access control using flat
 410 files on the main server, which give a huge potential for errors.</p>
 411
 412 <p>A related question I would like to know is how well Kerberos and
 413 pam-ccreds (offline password check) work together.  Anyone know?</p>
 414
 415 <p>Next step will be to use Kerberos for access control in Lwat and
 416 Nagios.  I have no idea how much work that will be to implement.  We
 417 would also need to document how to integrate with Windows AD, as such
 418 shared network will require two Kerberos realms that need to cooperate
 419 to work properly.</p>
 420
 421 <p>I believe a good start would be to start using Kerberos on the
 422 skolelinux.no machines, and this way get ourselves experience with
 423 configuration and integration.  A natural starting point would be
 424 setting up ldap.skolelinux.no as the Kerberos server, and migrate the
 425 rest of the machines from PAM via LDAP to PAM via Kerberos one at the
 426 time.</p>
 427
 428 <p>If you would like to contribute to get this working in Skolelinux,
 429 I recommend you to see the video recording from yesterdays NUUG
 430 presentation, and start using Kerberos at home.  The video show show
 431 up in a few days.</p>
 432 </div>
 433   <div class="tags">
 434
 435
 436
 437    Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>.
 438
 439   </div>
 440  </div>
 441  <div class="padding"></div>
 442
 443  <div class="entry">
 444   <div class="title"><a href="http://people.skolelinux.org/pere/blog/P___vegne_av_vanvitting_mange__Aftenposten_.html">På vegne av vanvitting mange, Aftenposten!</a></div>
 445   <div class="date">2010-03-06 21:15</div>
 446   <div class="body">
 447 <p><a href="http://fotball.aftenposten.no/incoming/article163000.ece">Aftenposten
 448 melder</a> på forsiden av webavisen sin at de tror Erling Fossen
 449 provoserer nordlendinger med sine uttalelser på
 450 fotballtinget.  Jeg er utflyttet nordlending, og må innrømme at jeg
 451 ikke kjennet så mye som et snev av provokasjon fra denne litt morsomme
 452 uttalelsen til Hr. Fossen.  Lurer på om Aftenposten har noen kilder
 453 utenom redaksjonen for sin påstand om at nordledinger er provosert av
 454 Hr. Fossen.  Må innrømme at jeg tviler på det.</p>
 455
 456 <p>Det hele bringer tankene tilbake til Sture Hansen i Hallo i Uken.</p>
 457 </div>
 458   <div class="tags">
 459
 460
 461
 462    Tags: <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>.
 463
 464   </div>
 465  </div>
 466  <div class="padding"></div>
 467
 468  <div class="entry">
 469   <div class="title"><a href="http://people.skolelinux.org/pere/blog/After_6_years_of_waiting__the_Xreset_d_feature_is_implemented.html">After 6 years of waiting, the Xreset.d feature is implemented</a></div>
 470   <div class="date">2010-03-06 18:15</div>
 471   <div class="body">
 472 <p>6 years ago, as part of the Debian Edu development I am involved
 473 in, I asked for a hook in the kdm and gdm setup to run scripts as root
 474 when the user log out.  A bug was submitted against the xfree86-common
 475 package in 2004 (<a href="http://bugs.debian.org/230422">#230422</a>),
 476 and revisited every time Debian Edu was working on a new release.
 477 Today, this finally paid off.</p>
 478
 479 <p>The framework for this feature was today commited to the git
 480 repositry for the xorg package, and the git repository for xdm has
 481 been updated to use this framework.  Next on my agenda is to make sure
 482 kdm and gdm also add code to use this framework.</p>
 483
 484 <p>In Debian Edu, we want to ability to run commands as root when the
 485 user log out, to get rid of runaway processes and do general cleanup
 486 after a user.  With this framework in place, we finally can do that in
 487 a generic way that work with all display managers using this
 488 framework.  My goal is to get all display managers in Debian use it,
 489 similar to how they use the Xsession.d framework today.<p>
 490 </div>
 491   <div class="tags">
 492
 493
 494
 495    Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>.
 496
 497   </div>
 498  </div>
 499  <div class="padding"></div>
 500
 501  <p style="text-align: right;"><a href="index.rss"><img src="http://people.skolelinux.org/pere/blog/xml.gif" alt="RSS feed" width="36" height="14"></a></p>
 502
 503 <div id="sidebar">
 504
 505
 506
 507
 508
 509 <h2>Archive</h2>
 510 <ul>
 511
 512 <li>2010
 513 <ul>
 514
 515 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/01/">January (2)</a></li>
 516
 517 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/02/">February (1)</a></li>
 518
 519 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/03/">March (3)</a></li>
 520
 521 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/04/">April (3)</a></li>
 522
 523 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/05/">May (5)</a></li>
 524
 525 </ul></li>
 526
 527 <li>2009
 528 <ul>
 529
 530 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/01/">January (8)</a></li>
 531
 532 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/02/">February (8)</a></li>
 533
 534 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/03/">March (12)</a></li>
 535
 536 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/04/">April (10)</a></li>
 537
 538 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/05/">May (9)</a></li>
 539
 540 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/06/">June (3)</a></li>
 541
 542 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/07/">July (4)</a></li>
 543
 544 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/08/">August (3)</a></li>
 545
 546 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/09/">September (1)</a></li>
 547
 548 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/10/">October (2)</a></li>
 549
 550 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/11/">November (3)</a></li>
 551
 552 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/12/">December (3)</a></li>
 553
 554 </ul></li>
 555
 556 <li>2008
 557 <ul>
 558
 559 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/11/">November (5)</a></li>
 560
 561 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/12/">December (7)</a></li>
 562
 563 </ul></li>
 564
 565 </ul>
 566
 567
 568
 569 <h2>Tags</h2>
 570 <ul>
 571
 572  <li><a href="http://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer (11)</a></li>
 573
 574  <li><a href="http://people.skolelinux.org/pere/blog/tags/amiga">amiga (1)</a></li>
 575
 576  <li><a href="http://people.skolelinux.org/pere/blog/tags/aros">aros (1)</a></li>
 577
 578  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian">debian (18)</a></li>
 579
 580  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (17)</a></li>
 581
 582  <li><a href="http://people.skolelinux.org/pere/blog/tags/english">english (28)</a></li>
 583
 584  <li><a href="http://people.skolelinux.org/pere/blog/tags/fiksgatami">fiksgatami (1)</a></li>
 585
 586  <li><a href="http://people.skolelinux.org/pere/blog/tags/fildeling">fildeling (6)</a></li>
 587
 588  <li><a href="http://people.skolelinux.org/pere/blog/tags/kart">kart (2)</a></li>
 589
 590  <li><a href="http://people.skolelinux.org/pere/blog/tags/lenker">lenker (1)</a></li>
 591
 592  <li><a href="http://people.skolelinux.org/pere/blog/tags/ltsp">ltsp (1)</a></li>
 593
 594  <li><a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (5)</a></li>
 595
 596  <li><a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk (64)</a></li>
 597
 598  <li><a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug (72)</a></li>
 599
 600  <li><a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (12)</a></li>
 601
 602  <li><a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern (11)</a></li>
 603
 604  <li><a href="http://people.skolelinux.org/pere/blog/tags/reprap">reprap (10)</a></li>
 605
 606  <li><a href="http://people.skolelinux.org/pere/blog/tags/rss">rss (1)</a></li>
 607
 608  <li><a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (7)</a></li>
 609
 610  <li><a href="http://people.skolelinux.org/pere/blog/tags/sitesummary">sitesummary (1)</a></li>
 611
 612  <li><a href="http://people.skolelinux.org/pere/blog/tags/standard">standard (11)</a></li>
 613
 614  <li><a href="http://people.skolelinux.org/pere/blog/tags/stavekontroll">stavekontroll (1)</a></li>
 615
 616  <li><a href="http://people.skolelinux.org/pere/blog/tags/video">video (10)</a></li>
 617
 618  <li><a href="http://people.skolelinux.org/pere/blog/tags/vitenskap">vitenskap (1)</a></li>
 619
 620  <li><a href="http://people.skolelinux.org/pere/blog/tags/web">web (6)</a></li>
 621
 622 </ul>
 623
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 625
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