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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/Sitesummary_tip__Listing_MAC_address_of_all_clients.html">Sitesummary tip: Listing MAC address of all clients</a></div>
  24   <div class="date">2010-05-14 21:10</div>
  25   <div class="body">
  26 <p>In the recent Debian Edu versions, the
  27 <a href="http://wiki.debian.org/DebianEdu/HowTo/SiteSummary">sitesummary
  28 system</a> is used to keep track of the machines in the school
  29 network.  Each machine will automatically report its status to the
  30 central server after boot and once per night.  The network setup is
  31 also reported, and using this information it is possible to get the
  32 MAC address of all network interfaces in the machines.  This is useful
  33 to update the DHCP configuration.</p>
  34
  35 <p>To give some idea how to use sitesummary, here is a one-liner to
  36 ist all MAC addresses of all machines reporting to sitesummary.  Run
  37 this on the collector host:</p>
  38
  39 <blockquote><pre>
  40 perl -MSiteSummary -e 'for_all_hosts(sub { print join(" ", get_macaddresses(shift)), "\n"; });'
  41 </pre></blockquote>
  42
  43 <p>This will list all MAC addresses assosiated with all machine, one
  44 line per machine and with space between the MAC addresses.</p>
  45
  46 <p>To allow system administrators easier job at adding static DHCP
  47 addresses for hosts, it would be possible to extend this to fetch
  48 machine information from sitesummary and update the DHCP and DNS
  49 tables in LDAP using this information.  Such tool is unfortunately not
  50 written yet.</p>
  51 </div>
  52   <div class="tags">
  53
  54
  55
  56    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>.
  57
  58   </div>
  59  </div>
  60  <div class="padding"></div>
  61
  62  <div class="entry">
  63   <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>
  64   <div class="date">2010-05-13 22:20</div>
  65   <div class="body">
  66 <p>The last few days a new boot system called
  67 <a href="http://www.freedesktop.org/wiki/Software/systemd">systemd</a>
  68 has been
  69 <a href="http://0pointer.de/blog/projects/systemd.html">introduced</a>
  70
  71 to the free software world.  I have not yet had time to play around
  72 with it, but it seem to be a very interesting alternative to
  73 <a href="http://upstart.ubuntu.com/">upstart</a>, and might prove to be
  74 a good alternative for Debian when we are able to switch to an event
  75 based boot system.  Tollef is
  76 <a href="http://bugs.debian.org/580814">in the process</a> of getting
  77 systemd into Debian, and I look forward to seeing how well it work.  I
  78 like the fact that systemd handles init.d scripts with dependency
  79 information natively, allowing them to run in parallel where upstart
  80 at the moment do not.</p>
  81
  82 <p>Unfortunately do systemd have the same problem as upstart regarding
  83 platform support.  It only work on recent Linux kernels, and also need
  84 some new kernel features enabled to function properly.  This means
  85 kFreeBSD and Hurd ports of Debian will need a port or a different boot
  86 system.  Not sure how that will be handled if systemd proves to be the
  87 way forward.</p>
  88
  89 <p>In the mean time, based on the
  90 <a href="http://lists.debian.org/debian-devel/2010/05/msg00122.html">input
  91 on debian-devel@</a> regarding parallel booting in Debian, I have
  92 decided to enable full parallel booting as the default in Debian as
  93 soon as possible (probably this weekend or early next week), to see if
  94 there are any remaining serious bugs in the init.d dependencies.  A
  95 new version of the sysvinit package implementing this change is
  96 already in experimental.  If all go well, Squeeze will be released
  97 with parallel booting enabled by default.</p>
  98 </div>
  99   <div class="tags">
 100
 101
 102
 103    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>.
 104
 105   </div>
 106  </div>
 107  <div class="padding"></div>
 108
 109  <div class="entry">
 110   <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>
 111   <div class="date">2010-05-06 23:25</div>
 112   <div class="body">
 113 <p>These days, the init.d script dependencies in Squeeze are quite
 114 complete, so complete that it is actually possible to run all the
 115 init.d scripts in parallell based on these dependencies.  If you want
 116 to test your Squeeze system, make sure
 117 <a href="http://wiki.debian.org/LSBInitScripts/DependencyBasedBoot">dependency
 118 based boot sequencing</a> is enabled, and add this line to
 119 /etc/default/rcS:</p>
 120
 121 <blockquote><pre>
 122 CONCURRENCY=makefile
 123 </pre></blockquote>
 124
 125 <p>That is it.  It will cause sysv-rc to use the startpar tool to run
 126 scripts in parallel using the dependency information stored in
 127 /etc/init.d/.depend.boot, /etc/init.d/.depend.start and
 128 /etc/init.d/.depend.stop to order the scripts.  Startpar is configured
 129 to try to start the kdm and gdm scripts as early as possible, and will
 130 start the facilities required by kdm or gdm as early as possible to
 131 make this happen.</p>
 132
 133 <p>Give it a try, and see if you like the result.  If some services
 134 fail to start properly, it is most likely because they have incomplete
 135 init.d script dependencies in their startup script (or some of their
 136 dependent scripts have incomplete dependencies).  Report bugs and get
 137 the package maintainers to fix it. :)</p>
 138
 139 <p>Running scripts in parallel could be the default in Debian when we
 140 manage to get the init.d script dependencies complete and correct.  I
 141 expect we will get there in Squeeze+1, if we get manage to test and
 142 fix the remaining issues.</p>
 143
 144 <p>If you report any problems with dependencies in init.d scripts to
 145 the BTS, please usertag the report to get it to show up at
 146 <a href="http://bugs.debian.org/cgi-bin/pkgreport.cgi?users=initscripts-ng-devel@lists.alioth.debian.org">the
 147 list of usertagged bugs related to this</a>.</p>
 148 </div>
 149   <div class="tags">
 150
 151
 152
 153    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>.
 154
 155   </div>
 156  </div>
 157  <div class="padding"></div>
 158
 159  <div class="entry">
 160   <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>
 161   <div class="date">2010-05-02 13:47</div>
 162   <div class="body">
 163 <p>One interesting feature in Active Directory, is the ability to
 164 create a new user with an expired password, and thus force the user to
 165 change the password on the first login attempt.</p>
 166
 167 <p>I'm not quite sure how to do that with the LDAP setup in Debian
 168 Edu, but did some initial testing with a local account.  The account
 169 and password aging information is available in /etc/shadow, but
 170 unfortunately, it is not possible to specify an expiration time for
 171 passwords, only a maximum age for passwords.</p>
 172
 173 <p>A freshly created account (using adduser test) will have these
 174 settings in /etc/shadow:</p>
 175
 176 <blockquote><pre>
 177 root@tjener:~# chage -l test
 178 Last password change                                    : May 02, 2010
 179 Password expires                                        : never
 180 Password inactive                                       : never
 181 Account expires                                         : never
 182 Minimum number of days between password change          : 0
 183 Maximum number of days between password change          : 99999
 184 Number of days of warning before password expires       : 7
 185 root@tjener:~#
 186 </pre></blockquote>
 187
 188 <p>The only way I could come up with to create a user with an expired
 189 account, is to change the date of the last password change to the
 190 lowest value possible (January 1th 1970), and the maximum password age
 191 to the difference in days between that date and today.  To make it
 192 simple, I went for 30 years (30 * 365 = 10950) and January 2th (to
 193 avoid testing if 0 is a valid value).</p>
 194
 195 <p>After using these commands to set it up, it seem to work as
 196 intended:</p>
 197
 198 <blockquote><pre>
 199 root@tjener:~# chage -d 1 test; chage -M 10950 test
 200 root@tjener:~# chage -l test
 201 Last password change                                    : Jan 02, 1970
 202 Password expires                                        : never
 203 Password inactive                                       : never
 204 Account expires                                         : never
 205 Minimum number of days between password change          : 0
 206 Maximum number of days between password change          : 10950
 207 Number of days of warning before password expires       : 7
 208 root@tjener:~#
 209 </pre></blockquote>
 210
 211 <p>So far I have tested this with ssh and console, and kdm (in
 212 Squeeze) login, and all ask for a new password before login in the
 213 user (with ssh, I was thrown out and had to log in again).</p>
 214
 215 <p>Perhaps we should set up something similar for Debian Edu, to make
 216 sure only the user itself have the account password?</p>
 217
 218 <p>If you want to comment on or help out with implementing this for
 219 Debian Edu, please contact us on debian-edu@lists.debian.org.</p>
 220
 221 <p>Update 2010-05-02 17:20: Paul Tötterman tells me on IRC that the
 222 shadow(8) page in Debian/testing now state that setting the date of
 223 last password change to zero (0) will force the password to be changed
 224 on the first login.  This was not mentioned in the manual in Lenny, so
 225 I did not notice this in my initial testing.  I have tested it on
 226 Squeeze, and '<tt>chage -d 0 username</tt>' do work there.  I have not
 227 tested it on Lenny yet.</p>
 228
 229 <p>Update 2010-05-02-19:05: Jim Paris tells me via email that an
 230 equivalent command to expire a password is '<tt>passwd -e
 231 username</tt>', which insert zero into the date of the last password
 232 change.</p>
 233 </div>
 234   <div class="tags">
 235
 236
 237
 238    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>.
 239
 240   </div>
 241  </div>
 242  <div class="padding"></div>
 243
 244  <div class="entry">
 245   <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>
 246   <div class="date">2010-04-28 20:40</div>
 247   <div class="body">
 248 <p>For some years now, I have wondered how we should handle laptops in
 249 Debian Edu.  The Debian Edu infrastructure is mostly designed to
 250 handle stationary computers, and less suited for computers that come
 251 and go.</p>
 252
 253 <p>Now I finally believe I have an sensible idea on how to adjust
 254 Debian Edu for laptops, by introducing a new profile for them, for
 255 example called Roaming Workstations.  Here are my thought on this.
 256 The setup would consist of the following:</p>
 257
 258 <ul>
 259
 260  <li>During installation, the user name of the owner / primary user of
 261    the laptop is requested and a local home directory is set up for
 262    the user, with uid and gid information fetched from the LDAP
 263    server.  This allow the user to work also when offline.  The
 264    central home directory can be available in a subdirectory on
 265    request, for example mounted via CIFS.  It could be mounted
 266    automatically when a user log in while on the Debian Edu network,
 267    and unmounted when the machine is taken away (network down,
 268    hibernate, etc), it can be set up to do automatic mounting on
 269    request (using autofs), or perhaps some GUI button on the desktop
 270    can be used to access it when needed.  Perhaps it is enough to use
 271    the fish protocol in KDE?</li>
 272
 273  <li>Password checking is set up to use LDAP or Kerberos
 274    authentication when the machine is on the Debian Edu network, and
 275    to cache the password for offline checking when the machine unable
 276    to reach the LDAP or Kerberos server.  This can be done using
 277    <a href="http://www.padl.com/OSS/pam_ccreds.html">libpam-ccreds</a>
 278    or the Fedora developed
 279    <a href="https://fedoraproject.org/wiki/Features/SSSD">System
 280    Security Services Daemon</a> packages.</li>
 281
 282  <li>File synchronisation with the central home directory is set up
 283    using a shared directory in both the local and the central home
 284    directory, using unison.</li>
 285
 286  <li>Printing should be set up to print to all printers broadcasting
 287    their existence on the local network, and should then work out of
 288    the box with CUPS.  For sites needing accurate printer quotas, some
 289    system with Kerberos authentication or printing via ssh could be
 290    implemented.</li>
 291
 292  <li>For users that should have local root access to their laptop,
 293    sudo should be used to allow this to the local user.</li>
 294
 295  <li>It would be nice if user and group information from LDAP is
 296    cached on the client, but given that there are entries for the
 297    local user and primary group in /etc/, it should not be needed.</li>
 298
 299 </ul>
 300
 301 <p>I believe all the pieces to implement this are in Debian/testing at
 302 the moment.  If we work quickly, we should be able to get this ready
 303 in time for the Squeeze release to freeze.  Some of the pieces need
 304 tweaking, like libpam-ccreds should get support for pam-auth-update
 305 (<a href="http://bugs.debian.org/566718">#566718</a>) and nslcd (or
 306 perhaps debian-edu-config) should get some integration code to stop
 307 its daemon when the LDAP server is unavailable to avoid long timeouts
 308 when disconnected from the net.  If we get Kerberos enabled, we need
 309 to make sure we avoid long timeouts there too.</p>
 310
 311 <p>If you want to help out with implementing this for Debian Edu,
 312 please contact us on debian-edu@lists.debian.org.</p>
 313 </div>
 314   <div class="tags">
 315
 316
 317
 318    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>.
 319
 320   </div>
 321  </div>
 322  <div class="padding"></div>
 323
 324  <div class="entry">
 325   <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>
 326   <div class="date">2010-04-19 17:10</div>
 327   <div class="body">
 328 <p>The last few weeks i have had the pleasure of reading a
 329 thought-provoking collection of essays by Cory Doctorow, on topics
 330 touching copyright, virtual worlds, the future of man when the
 331 conscience mind can be duplicated into a computer and many more. The
 332 book titled "Content: Selected Essays on Technology, Creativity,
 333 Copyright, and the Future of the Future" is available with few
 334 restrictions on the web, for example from
 335 <a href="http://craphound.com/content/">his own site</a>. I read the
 336 epub-version from
 337 <a href="http://www.feedbooks.com/book/2883">feedbooks</a> using
 338 <a href="http://www.fbreader.org/">fbreader</a> and my N810. I
 339 strongly recommend this book.</p>
 340 </div>
 341   <div class="tags">
 342
 343
 344
 345    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>.
 346
 347   </div>
 348  </div>
 349  <div class="padding"></div>
 350
 351  <div class="entry">
 352   <div class="title"><a href="http://people.skolelinux.org/pere/blog/Kerberos_for_Debian_Edu_Squeeze_.html">Kerberos for Debian Edu/Squeeze?</a></div>
 353   <div class="date">2010-04-14 17:20</div>
 354   <div class="body">
 355 <p><a href="http://www.nuug.no/aktiviteter/20100413-kerberos/">Yesterdays
 356 NUUG presentation</a> about Kerberos was inspiring, and reminded me
 357 about the need to start using Kerberos in Skolelinux.  Setting up a
 358 Kerberos server seem to be straight forward, and if we get this in
 359 place a long time before the Squeeze version of Debian freezes, we
 360 have a chance to migrate Skolelinux away from NFSv3 for the home
 361 directories, and over to an architecture where the infrastructure do
 362 not have to trust IP addresses and machines, and instead can trust
 363 users and cryptographic keys instead.</p>
 364
 365 <p>A challenge will be integration and administration.  Is there a
 366 Kerberos implementation for Debian where one can control the
 367 administration access in Kerberos using LDAP groups?  With it, the
 368 school administration will have to maintain access control using flat
 369 files on the main server, which give a huge potential for errors.</p>
 370
 371 <p>A related question I would like to know is how well Kerberos and
 372 pam-ccreds (offline password check) work together.  Anyone know?</p>
 373
 374 <p>Next step will be to use Kerberos for access control in Lwat and
 375 Nagios.  I have no idea how much work that will be to implement.  We
 376 would also need to document how to integrate with Windows AD, as such
 377 shared network will require two Kerberos realms that need to cooperate
 378 to work properly.</p>
 379
 380 <p>I believe a good start would be to start using Kerberos on the
 381 skolelinux.no machines, and this way get ourselves experience with
 382 configuration and integration.  A natural starting point would be
 383 setting up ldap.skolelinux.no as the Kerberos server, and migrate the
 384 rest of the machines from PAM via LDAP to PAM via Kerberos one at the
 385 time.</p>
 386
 387 <p>If you would like to contribute to get this working in Skolelinux,
 388 I recommend you to see the video recording from yesterdays NUUG
 389 presentation, and start using Kerberos at home.  The video show show
 390 up in a few days.</p>
 391 </div>
 392   <div class="tags">
 393
 394
 395
 396    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>.
 397
 398   </div>
 399  </div>
 400  <div class="padding"></div>
 401
 402  <div class="entry">
 403   <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>
 404   <div class="date">2010-03-06 21:15</div>
 405   <div class="body">
 406 <p><a href="http://fotball.aftenposten.no/incoming/article163000.ece">Aftenposten
 407 melder</a> på forsiden av webavisen sin at de tror Erling Fossen
 408 provoserer nordlendinger med sine uttalelser på
 409 fotballtinget.  Jeg er utflyttet nordlending, og må innrømme at jeg
 410 ikke kjennet så mye som et snev av provokasjon fra denne litt morsomme
 411 uttalelsen til Hr. Fossen.  Lurer på om Aftenposten har noen kilder
 412 utenom redaksjonen for sin påstand om at nordledinger er provosert av
 413 Hr. Fossen.  Må innrømme at jeg tviler på det.</p>
 414
 415 <p>Det hele bringer tankene tilbake til Sture Hansen i Hallo i Uken.</p>
 416 </div>
 417   <div class="tags">
 418
 419
 420
 421    Tags: <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>.
 422
 423   </div>
 424  </div>
 425  <div class="padding"></div>
 426
 427  <div class="entry">
 428   <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>
 429   <div class="date">2010-03-06 18:15</div>
 430   <div class="body">
 431 <p>6 years ago, as part of the Debian Edu development I am involved
 432 in, I asked for a hook in the kdm and gdm setup to run scripts as root
 433 when the user log out.  A bug was submitted against the xfree86-common
 434 package in 2004 (<a href="http://bugs.debian.org/230422">#230422</a>),
 435 and revisited every time Debian Edu was working on a new release.
 436 Today, this finally paid off.</p>
 437
 438 <p>The framework for this feature was today commited to the git
 439 repositry for the xorg package, and the git repository for xdm has
 440 been updated to use this framework.  Next on my agenda is to make sure
 441 kdm and gdm also add code to use this framework.</p>
 442
 443 <p>In Debian Edu, we want to ability to run commands as root when the
 444 user log out, to get rid of runaway processes and do general cleanup
 445 after a user.  With this framework in place, we finally can do that in
 446 a generic way that work with all display managers using this
 447 framework.  My goal is to get all display managers in Debian use it,
 448 similar to how they use the Xsession.d framework today.<p>
 449 </div>
 450   <div class="tags">
 451
 452
 453
 454    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>.
 455
 456   </div>
 457  </div>
 458  <div class="padding"></div>
 459
 460  <div class="entry">
 461   <div class="title"><a href="http://people.skolelinux.org/pere/blog/Digitale_b__ker_uten_digitale_restriksjonsmekanismer__DRM__b__r_f___mva_fritak.html">Digitale bøker uten digitale restriksjonsmekanismer (DRM) bør få mva-fritak</a></div>
 462   <div class="date">2010-03-03 19:00</div>
 463   <div class="body">
 464 <p>Den norske bokbransjen har
 465 <a href="http://www.digi.no/823912/nei-til-moms-paa-e-boker">bedt om at
 466 digitale bøker må få mva-fritak</a> slik papirbøker har det, og
 467 <a href="http://www.digi.no/836875/moms-paa-alt-digitalt-innhold">finansdepartementet
 468 har sagt nei</a>.  Det er et interessant spørsmål om digitale bøker
 469 bør ha mva-fritak eller ikke, og svaret er ikke så enkelt som et ja
 470 eller nei.
 471 <a href="http://www.digi.no/836925/norske-e-boker-truet-av-moms">Enkelte
 472 medlemmer</a> av bokbransjen truer med å droppe den planlagte
 473 lanseringen av norske digitale bøker med digitale restriksjonsmekanismer
 474 (DRM) som de har snakket om å gjennomføre nå i vår, og det må de
 475 gjerne gjøre for min del.</p>
 476
 477 <p>Papirbøker har mva-fritak pga. at de fremmer kultur- og
 478 kunnskapsspredning.  Digitale bøker uten digitale
 479 restriksjonsmekanismer (DRM) fremmer kultur- og kunnskapsspredning,
 480 mens digitale bøker med DRM hindrer kultur og kunnskapsspredning.
 481 Digitale bøker uten DRM bør få mva-fritak da det er salg av bøker på
 482 lik linje med salg av papirbøker, mens digitale bøker med DRM ikke bør
 483 få det da det er utleie av bøker og ikke salg.</p>
 484
 485 <p>Jeg foretrekker å kjøpe bøker, og velger dermed å la være å bruke
 486 DRM-belastede digitale bøker.  Vet ikke helt hva jeg ville være villig
 487 til å betale for å leie en bok, men tror ikke det er mange kronene.
 488 Heldigvis er det mye bøker tilgjengelig uten slike restriksjoner, og
 489 de som vil ha tak i engelske bøker kan laste ned bøker som er
 490 tilgjengelig uten bruksbegresninger fra <a href="http://www.archive.org/">The
 491 Internet Archive</a>. Der er det pr. i dag 1 889 313 bøker
 492 tilgjengelig. De er tilgjengelig i flere formater. Besøk
 493 <a href="http://www.archive.org/details/texts">oversikten over tekster
 494 der</a> for å se hva de har.
 495 </div>
 496   <div class="tags">
 497
 498
 499
 500    Tags: <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>, <a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett</a>.
 501
 502   </div>
 503  </div>
 504  <div class="padding"></div>
 505
 506  <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>
 507
 508 <div id="sidebar">
 509
 510
 511
 512
 513
 514 <h2>Archive</h2>
 515 <ul>
 516
 517 <li>2010
 518 <ul>
 519
 520 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/01/">January (2)</a></li>
 521
 522 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/02/">February (1)</a></li>
 523
 524 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/03/">March (3)</a></li>
 525
 526 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/04/">April (3)</a></li>
 527
 528 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/05/">May (4)</a></li>
 529
 530 </ul></li>
 531
 532 <li>2009
 533 <ul>
 534
 535 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/01/">January (8)</a></li>
 536
 537 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/02/">February (8)</a></li>
 538
 539 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/03/">March (12)</a></li>
 540
 541 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/04/">April (10)</a></li>
 542
 543 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/05/">May (9)</a></li>
 544
 545 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/06/">June (3)</a></li>
 546
 547 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/07/">July (4)</a></li>
 548
 549 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/08/">August (3)</a></li>
 550
 551 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/09/">September (1)</a></li>
 552
 553 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/10/">October (2)</a></li>
 554
 555 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/11/">November (3)</a></li>
 556
 557 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/12/">December (3)</a></li>
 558
 559 </ul></li>
 560
 561 <li>2008
 562 <ul>
 563
 564 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/11/">November (5)</a></li>
 565
 566 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/12/">December (7)</a></li>
 567
 568 </ul></li>
 569
 570 </ul>
 571
 572
 573
 574 <h2>Tags</h2>
 575 <ul>
 576
 577  <li><a href="http://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer (11)</a></li>
 578
 579  <li><a href="http://people.skolelinux.org/pere/blog/tags/amiga">amiga (1)</a></li>
 580
 581  <li><a href="http://people.skolelinux.org/pere/blog/tags/aros">aros (1)</a></li>
 582
 583  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian">debian (17)</a></li>
 584
 585  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (16)</a></li>
 586
 587  <li><a href="http://people.skolelinux.org/pere/blog/tags/english">english (27)</a></li>
 588
 589  <li><a href="http://people.skolelinux.org/pere/blog/tags/fiksgatami">fiksgatami (1)</a></li>
 590
 591  <li><a href="http://people.skolelinux.org/pere/blog/tags/fildeling">fildeling (6)</a></li>
 592
 593  <li><a href="http://people.skolelinux.org/pere/blog/tags/kart">kart (2)</a></li>
 594
 595  <li><a href="http://people.skolelinux.org/pere/blog/tags/lenker">lenker (1)</a></li>
 596
 597  <li><a href="http://people.skolelinux.org/pere/blog/tags/ltsp">ltsp (1)</a></li>
 598
 599  <li><a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (5)</a></li>
 600
 601  <li><a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk (64)</a></li>
 602
 603  <li><a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug (72)</a></li>
 604
 605  <li><a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (12)</a></li>
 606
 607  <li><a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern (11)</a></li>
 608
 609  <li><a href="http://people.skolelinux.org/pere/blog/tags/reprap">reprap (10)</a></li>
 610
 611  <li><a href="http://people.skolelinux.org/pere/blog/tags/rss">rss (1)</a></li>
 612
 613  <li><a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (7)</a></li>
 614
 615  <li><a href="http://people.skolelinux.org/pere/blog/tags/sitesummary">sitesummary (1)</a></li>
 616
 617  <li><a href="http://people.skolelinux.org/pere/blog/tags/standard">standard (11)</a></li>
 618
 619  <li><a href="http://people.skolelinux.org/pere/blog/tags/stavekontroll">stavekontroll (1)</a></li>
 620
 621  <li><a href="http://people.skolelinux.org/pere/blog/tags/video">video (10)</a></li>
 622
 623  <li><a href="http://people.skolelinux.org/pere/blog/tags/vitenskap">vitenskap (1)</a></li>
 624
 625  <li><a href="http://people.skolelinux.org/pere/blog/tags/web">web (6)</a></li>
 626
 627 </ul>
 628
 629 </div>
 630
 631 <p style="text-align: right">
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