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  13  <h1>
  14      <a href="https://people.skolelinux.org/pere/blog/">Petter Reinholdtsen</a>
  15
  16  </h1>
  17
  18 </div>
  19
  20
  21     <h3>Entries tagged "sysadmin".</h3>
  22
  23     <div class="entry">
  24       <div class="title">
  25         <a href="https://people.skolelinux.org/pere/blog/Secure_Socket_API___a_simple_and_powerful_approach_for_TLS_support_in_software.html">Secure Socket API - a simple and powerful approach for TLS support in software</a>
  26       </div>
  27       <div class="date">
  28          6th June 2020
  29       </div>
  30       <div class="body">
  31         <p>As a member of the <a href="https://www.nuug.no/">Norwegian Unix
  32 User Group</a>, I have the pleasure of receiving the
  33 <a href="https://www.usenix.org/">USENIX</a> magazine
  34 <a href="https://www.usenix.org/publications/login/">;login:</a>
  35 several times a year.  I rarely have time to read all the articles,
  36 but try to at least skim through them all as there is a lot of nice
  37 knowledge passed on there.  I even carry the latest issue with me most
  38 of the time to try to get through all the articles when I have a few
  39 spare minutes.</p>
  40
  41 <p>The other day I came across a nice article titled
  42 "<a href="https://www.usenix.org/publications/login/winter2018/oneill">The
  43 Secure Socket API: TLS as an Operating System Service</a>" with a
  44 marvellous idea I hope can make it all the way into the POSIX standard.
  45 The idea is as simple as it is powerful.  By introducing a new
  46 socket() option IPPROTO_TLS to use TLS, and a system wide service to
  47 handle setting up TLS connections, one both make it trivial to add TLS
  48 support to any program currently using the POSIX socket API, and gain
  49 system wide control over certificates, TLS versions and encryption
  50 systems used.  Instead of doing this:</p>
  51
  52 <p><blockquote><pre>
  53 int socket = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
  54 </pre></blockquote></p>
  55
  56 <p>the program code would be doing this:<p>
  57
  58 <p><blockquote><pre>
  59 int socket = socket(PF_INET, SOCK_STREAM, IPPROTO_TLS);
  60 </pre></blockquote></p>
  61
  62 <p>According to the ;login: article, converting a C program to use TLS
  63 would normally modify only 5-10 lines in the code, which is amazing
  64 when compared to using for example the OpenSSL API.</p>
  65
  66 <p>The project has set up the
  67 <a href="https://securesocketapi.org/">https://securesocketapi.org/</a>
  68 web site to spread the idea, and the code for a kernel module and the
  69 associated system daemon is available from two github repositories:
  70 <a href="https://github.com/markoneill/ssa">ssa</a> and
  71 <a href="https://github.com/markoneill/ssa-daemon">ssa-daemon</a>.
  72 Unfortunately there is no explicit license information with the code,
  73 so its copyright status is unclear.  A
  74 <a href="https://github.com/markoneill/ssa/issues/2">request to solve
  75 this</a> about it has been unsolved since 2018-08-17.</p>
  76
  77 <p>I love the idea of extending socket() to gain TLS support, and
  78 understand why it is an advantage to implement this as a kernel module
  79 and system wide service daemon, but can not help to think that it
  80 would be a lot easier to get projects to move to this way of setting
  81 up TLS if it was done with a user space approach where programs
  82 wanting to use this API approach could just link with a wrapper
  83 library.</p>
  84
  85 <p>I recommend you check out this simple and powerful approach to more
  86 secure network connections. :)</p>
  87
  88 <p>As usual, if you use Bitcoin and want to show your support of my
  89 activities, please send Bitcoin donations to my address
  90 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
  91
  92       </div>
  93       <div class="tags">
  94
  95
  96         Tags: <a href="https://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="https://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="https://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet</a>, <a href="https://people.skolelinux.org/pere/blog/tags/sysadmin">sysadmin</a>.
  97
  98
  99       </div>
 100     </div>
 101     <div class="padding"></div>
 102
 103     <div class="entry">
 104       <div class="title">
 105         <a href="https://people.skolelinux.org/pere/blog/Some_notes_on_fault_tolerant_storage_systems.html">Some notes on fault tolerant storage systems</a>
 106       </div>
 107       <div class="date">
 108          1st November 2017
 109       </div>
 110       <div class="body">
 111         <p>If you care about how fault tolerant your storage is, you might
 112 find these articles and papers interesting.  They have formed how I
 113 think of when designing a storage system.</p>
 114
 115 <ul>
 116
 117 <li>USENIX :login; <a
 118 href="https://www.usenix.org/publications/login/summer2017/ganesan">Redundancy
 119 Does Not Imply Fault Tolerance.  Analysis of Distributed Storage
 120 Reactions to Single Errors and Corruptions</a> by Aishwarya Ganesan,
 121 Ramnatthan Alagappan, Andrea C. Arpaci-Dusseau, and Remzi
 122 H. Arpaci-Dusseau</li>
 123
 124 <li>ZDNet
 125 <a href="http://www.zdnet.com/article/why-raid-5-stops-working-in-2009/">Why
 126 RAID 5 stops working in 2009</a> by Robin Harris</li>
 127
 128 <li>ZDNet
 129 <a href="http://www.zdnet.com/article/why-raid-6-stops-working-in-2019/">Why
 130 RAID 6 stops working in 2019</a> by Robin Harris</li>
 131
 132 <li>USENIX FAST'07
 133 <a href="http://research.google.com/archive/disk_failures.pdf">Failure
 134 Trends in a Large Disk Drive Population</a> by Eduardo Pinheiro,
 135 Wolf-Dietrich Weber and Luiz André Barroso</li>
 136
 137 <li>USENIX ;login: <a
 138 href="https://www.usenix.org/system/files/login/articles/hughes12-04.pdf">Data
 139 Integrity.  Finding Truth in a World of Guesses and Lies</a> by Doug
 140 Hughes</li>
 141
 142 <li>USENIX FAST'08
 143 <a href="https://www.usenix.org/events/fast08/tech/full_papers/bairavasundaram/bairavasundaram_html/">An
 144 Analysis of Data Corruption in the Storage Stack</a> by
 145 L. N. Bairavasundaram, G. R. Goodson, B. Schroeder, A. C.
 146 Arpaci-Dusseau, and R. H. Arpaci-Dusseau</li>
 147
 148 <li>USENIX FAST'07 <a
 149 href="https://www.usenix.org/legacy/events/fast07/tech/schroeder/schroeder_html/">Disk
 150 failures in the real world: what does an MTTF of 1,000,000 hours mean
 151 to you?</a> by B. Schroeder and G. A. Gibson.</li>
 152
 153 <li>USENIX ;login: <a
 154 href="https://www.usenix.org/events/fast08/tech/full_papers/jiang/jiang_html/">Are
 155 Disks the Dominant Contributor for Storage Failures?  A Comprehensive
 156 Study of Storage Subsystem Failure Characteristics</a> by Weihang
 157 Jiang, Chongfeng Hu, Yuanyuan Zhou, and Arkady Kanevsky</li>
 158
 159 <li>SIGMETRICS 2007
 160 <a href="http://research.cs.wisc.edu/adsl/Publications/latent-sigmetrics07.pdf">An
 161 analysis of latent sector errors in disk drives</a> by
 162 L. N. Bairavasundaram, G. R. Goodson, S. Pasupathy, and J. Schindler</li>
 163
 164 </ul>
 165
 166 <p>Several of these research papers are based on data collected from
 167 hundred thousands or millions of disk, and their findings are eye
 168 opening.  The short story is simply do not implicitly trust RAID or
 169 redundant storage systems.  Details matter.  And unfortunately there
 170 are few options on Linux addressing all the identified issues.  Both
 171 ZFS and Btrfs are doing a fairly good job, but have legal and
 172 practical issues on their own.  I wonder how cluster file systems like
 173 Ceph do in this regard.  After all, there is an old saying, you know
 174 you have a distributed system when the crash of a computer you have
 175 never heard of stops you from getting any work done.  The same holds
 176 true if fault tolerance do not work.</p>
 177
 178 <p>Just remember, in the end, it do not matter how redundant, or how
 179 fault tolerant your storage is, if you do not continuously monitor its
 180 status to detect and replace failed disks.</p>
 181
 182 <p>As usual, if you use Bitcoin and want to show your support of my
 183 activities, please send Bitcoin donations to my address
 184 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 185
 186       </div>
 187       <div class="tags">
 188
 189
 190         Tags: <a href="https://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="https://people.skolelinux.org/pere/blog/tags/raid">raid</a>, <a href="https://people.skolelinux.org/pere/blog/tags/sysadmin">sysadmin</a>.
 191
 192
 193       </div>
 194     </div>
 195     <div class="padding"></div>
 196
 197     <div class="entry">
 198       <div class="title">
 199         <a href="https://people.skolelinux.org/pere/blog/Detecting_NFS_hangs_on_Linux_without_hanging_yourself___.html">Detecting NFS hangs on Linux without hanging yourself...</a>
 200       </div>
 201       <div class="date">
 202          9th March 2017
 203       </div>
 204       <div class="body">
 205         <p>Over the years, administrating thousand of NFS mounting linux
 206 computers at the time, I often needed a way to detect if the machine
 207 was experiencing NFS hang.  If you try to use <tt>df</tt> or look at a
 208 file or directory affected by the hang, the process (and possibly the
 209 shell) will hang too.  So you want to be able to detect this without
 210 risking the detection process getting stuck too.  It has not been
 211 obvious how to do this.  When the hang has lasted a while, it is
 212 possible to find messages like these in dmesg:</p>
 213
 214 <p><blockquote>
 215 nfs: server nfsserver not responding, still trying
 216 <br>nfs: server nfsserver OK
 217 </blockquote></p>
 218
 219 <p>It is hard to know if the hang is still going on, and it is hard to
 220 be sure looking in dmesg is going to work.  If there are lots of other
 221 messages in dmesg the lines might have rotated out of site before they
 222 are noticed.</p>
 223
 224 <p>While reading through the nfs client implementation in linux kernel
 225 code, I came across some statistics that seem to give a way to detect
 226 it.  The om_timeouts sunrpc value in the kernel will increase every
 227 time the above log entry is inserted into dmesg.  And after digging a
 228 bit further, I discovered that this value show up in
 229 /proc/self/mountstats on Linux.</p>
 230
 231 <p>The mountstats content seem to be shared between files using the
 232 same file system context, so it is enough to check one of the
 233 mountstats files to get the state of the mount point for the machine.
 234 I assume this will not show lazy umounted NFS points, nor NFS mount
 235 points in a different process context (ie with a different filesystem
 236 view), but that does not worry me.</p>
 237
 238 <p>The content for a NFS mount point look similar to this:</p>
 239
 240 <p><blockquote><pre>
 241 [...]
 242 device /dev/mapper/Debian-var mounted on /var with fstype ext3
 243 device nfsserver:/mnt/nfsserver/home0 mounted on /mnt/nfsserver/home0 with fstype nfs statvers=1.1
 244         opts:   rw,vers=3,rsize=65536,wsize=65536,namlen=255,acregmin=3,acregmax=60,acdirmin=30,acdirmax=60,soft,nolock,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=129.240.3.145,mountvers=3,mountport=4048,mountproto=udp,local_lock=all
 245         age:    7863311
 246         caps:   caps=0x3fe7,wtmult=4096,dtsize=8192,bsize=0,namlen=255
 247         sec:    flavor=1,pseudoflavor=1
 248         events: 61063112 732346265 1028140 35486205 16220064 8162542 761447191 71714012 37189 3891185 45561809 110486139 4850138 420353 15449177 296502 52736725 13523379 0 52182 9016896 1231 0 0 0 0 0
 249         bytes:  166253035039 219519120027 0 0 40783504807 185466229638 11677877 45561809
 250         RPC iostats version: 1.0  p/v: 100003/3 (nfs)
 251         xprt:   tcp 925 1 6810 0 0 111505412 111480497 109 2672418560317 0 248 53869103 22481820
 252         per-op statistics
 253                 NULL: 0 0 0 0 0 0 0 0
 254              GETATTR: 61063106 61063108 0 9621383060 6839064400 453650 77291321 78926132
 255              SETATTR: 463469 463470 0 92005440 66739536 63787 603235 687943
 256               LOOKUP: 17021657 17021657 0 3354097764 4013442928 57216 35125459 35566511
 257               ACCESS: 14281703 14290009 5 2318400592 1713803640 1709282 4865144 7130140
 258             READLINK: 125 125 0 20472 18620 0 1112 1118
 259                 READ: 4214236 4214237 0 715608524 41328653212 89884 22622768 22806693
 260                WRITE: 8479010 8494376 22 187695798568 1356087148 178264904 51506907 231671771
 261               CREATE: 171708 171708 0 38084748 46702272 873 1041833 1050398
 262                MKDIR: 3680 3680 0 773980 993920 26 23990 24245
 263              SYMLINK: 903 903 0 233428 245488 6 5865 5917
 264                MKNOD: 80 80 0 20148 21760 0 299 304
 265               REMOVE: 429921 429921 0 79796004 61908192 3313 2710416 2741636
 266                RMDIR: 3367 3367 0 645112 484848 22 5782 6002
 267               RENAME: 466201 466201 0 130026184 121212260 7075 5935207 5961288
 268                 LINK: 289155 289155 0 72775556 67083960 2199 2565060 2585579
 269              READDIR: 2933237 2933237 0 516506204 13973833412 10385 3190199 3297917
 270          READDIRPLUS: 1652839 1652839 0 298640972 6895997744 84735 14307895 14448937
 271               FSSTAT: 6144 6144 0 1010516 1032192 51 9654 10022
 272               FSINFO: 2 2 0 232 328 0 1 1
 273             PATHCONF: 1 1 0 116 140 0 0 0
 274               COMMIT: 0 0 0 0 0 0 0 0
 275
 276 device binfmt_misc mounted on /proc/sys/fs/binfmt_misc with fstype binfmt_misc
 277 [...]
 278 </pre></blockquote></p>
 279
 280 <p>The key number to look at is the third number in the per-op list.
 281 It is the number of NFS timeouts experiences per file system
 282 operation.  Here 22 write timeouts and 5 access timeouts.  If these
 283 numbers are increasing, I believe the machine is experiencing NFS
 284 hang.  Unfortunately the timeout value do not start to increase right
 285 away.  The NFS operations need to time out first, and this can take a
 286 while.  The exact timeout value depend on the setup.  For example the
 287 defaults for TCP and UDP mount points are quite different, and the
 288 timeout value is affected by the soft, hard, timeo and retrans NFS
 289 mount options.</p>
 290
 291 <p>The only way I have been able to get working on Debian and RedHat
 292 Enterprise Linux for getting the timeout count is to peek in /proc/.
 293 But according to
 294 <ahref="http://docs.oracle.com/cd/E19253-01/816-4555/netmonitor-12/index.html">Solaris
 295 10 System Administration Guide: Network Services</a>, the 'nfsstat -c'
 296 command can be used to get these timeout values.  But this do not work
 297 on Linux, as far as I can tell.  I
 298 <ahref="http://bugs.debian.org/857043">asked Debian about this</a>,
 299 but have not seen any replies yet.</p>
 300
 301 <p>Is there a better way to figure out if a Linux NFS client is
 302 experiencing NFS hangs?  Is there a way to detect which processes are
 303 affected?  Is there a way to get the NFS mount going quickly once the
 304 network problem causing the NFS hang has been cleared?  I would very
 305 much welcome some clues, as we regularly run into NFS hangs.</p>
 306
 307       </div>
 308       <div class="tags">
 309
 310
 311         Tags: <a href="https://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="https://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="https://people.skolelinux.org/pere/blog/tags/sysadmin">sysadmin</a>.
 312
 313
 314       </div>
 315     </div>
 316     <div class="padding"></div>
 317
 318     <div class="entry">
 319       <div class="title">
 320         <a href="https://people.skolelinux.org/pere/blog/Debian_Jessie__PXE_and_automatic_firmware_installation.html">Debian Jessie, PXE and automatic firmware installation</a>
 321       </div>
 322       <div class="date">
 323         17th October 2014
 324       </div>
 325       <div class="body">
 326         <p>When PXE installing laptops with Debian, I often run into the
 327 problem that the WiFi card require some firmware to work properly.
 328 And it has been a pain to fix this using preseeding in Debian.
 329 Normally something more is needed.  But thanks to
 330 <a href="https://packages.qa.debian.org/i/isenkram.html">my isenkram
 331 package</a> and its recent tasksel extension, it has now become easy
 332 to do this using simple preseeding.</p>
 333
 334 <p>The isenkram-cli package provide tasksel tasks which will install
 335 firmware for the hardware found in the machine (actually, requested by
 336 the kernel modules for the hardware).  (It can also install user space
 337 programs supporting the hardware detected, but that is not the focus
 338 of this story.)</p>
 339
 340 <p>To get this working in the default installation, two preeseding
 341 values are needed.  First, the isenkram-cli package must be installed
 342 into the target chroot (aka the hard drive) before tasksel is executed
 343 in the pkgsel step of the debian-installer system.  This is done by
 344 preseeding the base-installer/includes debconf value to include the
 345 isenkram-cli package.  The package name is next passed to debootstrap
 346 for installation.  With the isenkram-cli package in place, tasksel
 347 will automatically use the isenkram tasks to detect hardware specific
 348 packages for the machine being installed and install them, because
 349 isenkram-cli contain tasksel tasks.</p>
 350
 351 <p>Second, one need to enable the non-free APT repository, because
 352 most firmware unfortunately is non-free.  This is done by preseeding
 353 the apt-mirror-setup step.  This is unfortunate, but for a lot of
 354 hardware it is the only option in Debian.</p>
 355
 356 <p>The end result is two lines needed in your preseeding file to get
 357 firmware installed automatically by the installer:</p>
 358
 359 <p><blockquote><pre>
 360 base-installer base-installer/includes string isenkram-cli
 361 apt-mirror-setup apt-setup/non-free boolean true
 362 </pre></blockquote></p>
 363
 364 <p>The current version of isenkram-cli in testing/jessie will install
 365 both firmware and user space packages when using this method.  It also
 366 do not work well, so use version 0.15 or later.  Installing both
 367 firmware and user space packages might give you a bit more than you
 368 want, so I decided to split the tasksel task in two, one for firmware
 369 and one for user space programs.  The firmware task is enabled by
 370 default, while the one for user space programs is not.  This split is
 371 implemented in the package currently in unstable.</p>
 372
 373 <p>If you decide to give this a go, please let me know (via email) how
 374 this recipe work for you. :)</p>
 375
 376 <p>So, I bet you are wondering, how can this work.  First and
 377 foremost, it work because tasksel is modular, and driven by whatever
 378 files it find in /usr/lib/tasksel/ and /usr/share/tasksel/.  So the
 379 isenkram-cli package place two files for tasksel to find.  First there
 380 is the task description file (/usr/share/tasksel/descs/isenkram.desc):</p>
 381
 382 <p><blockquote><pre>
 383 Task: isenkram-packages
 384 Section: hardware
 385 Description: Hardware specific packages (autodetected by isenkram)
 386  Based on the detected hardware various hardware specific packages are
 387  proposed.
 388 Test-new-install: show show
 389 Relevance: 8
 390 Packages: for-current-hardware
 391
 392 Task: isenkram-firmware
 393 Section: hardware
 394 Description: Hardware specific firmware packages (autodetected by isenkram)
 395  Based on the detected hardware various hardware specific firmware
 396  packages are proposed.
 397 Test-new-install: mark show
 398 Relevance: 8
 399 Packages: for-current-hardware-firmware
 400 </pre></blockquote></p>
 401
 402 <p>The key parts are Test-new-install which indicate how the task
 403 should be handled and the Packages line referencing to a script in
 404 /usr/lib/tasksel/packages/.  The scripts use other scripts to get a
 405 list of packages to install.  The for-current-hardware-firmware script
 406 look like this to list relevant firmware for the machine:
 407
 408 <p><blockquote><pre>
 409 #!/bin/sh
 410 #
 411 PATH=/usr/sbin:$PATH
 412 export PATH
 413 isenkram-autoinstall-firmware -l
 414 </pre></blockquote></p>
 415
 416 <p>With those two pieces in place, the firmware is installed by
 417 tasksel during the normal d-i run. :)</p>
 418
 419 <p>If you want to test what tasksel will install when isenkram-cli is
 420 installed, run <tt>DEBIAN_PRIORITY=critical tasksel --test
 421 --new-install</tt> to get the list of packages that tasksel would
 422 install.</p>
 423
 424 <p><a href="https://wiki.debian.org/DebianEdu/">Debian Edu</a> will be
 425 pilots in testing this feature, as isenkram is used there now to
 426 install firmware, replacing the earlier scripts.</p>
 427
 428       </div>
 429       <div class="tags">
 430
 431
 432         Tags: <a href="https://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="https://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="https://people.skolelinux.org/pere/blog/tags/isenkram">isenkram</a>, <a href="https://people.skolelinux.org/pere/blog/tags/sysadmin">sysadmin</a>.
 433
 434
 435       </div>
 436     </div>
 437     <div class="padding"></div>
 438
 439     <div class="entry">
 440       <div class="title">
 441         <a href="https://people.skolelinux.org/pere/blog/Scripting_the_Cerebrum_bofhd_user_administration_system_using_XML_RPC.html">Scripting the Cerebrum/bofhd user administration system using XML-RPC</a>
 442       </div>
 443       <div class="date">
 444          6th December 2012
 445       </div>
 446       <div class="body">
 447         <p>Where I work at the <a href="http://www.uio.no/">University of
 448 Oslo</a>, we use the
 449 <a href="http://sourceforge.net/projects/cerebrum/">Cerebrum user
 450 administration system</a> to maintain users, groups, DNS, DHCP, etc.
 451 I've known since the system was written that the server is providing
 452 an <a href="http://en.wikipedia.org/wiki/XML-RPC">XML-RPC</a> API, but
 453 I have never spent time to try to figure out how to use it, as we
 454 always use the bofh command line client at work.  Until today.  I want
 455 to script the updating of DNS and DHCP to make it easier to set up
 456 virtual machines.  Here are a few notes on how to use it with
 457 Python.</p>
 458
 459 <p>I started by looking at the source of the Java
 460 <a href="http://cerebrum.svn.sourceforge.net/viewvc/cerebrum/trunk/cerebrum/clients/jbofh/">bofh
 461 client</a>, to figure out how it connected to the API server.  I also
 462 googled for python examples on how to use XML-RPC, and found
 463 <a href="http://tldp.org/HOWTO/XML-RPC-HOWTO/xmlrpc-howto-python.html">a
 464 simple example in</a> the XML-RPC howto.</p>
 465
 466 <p>This simple example code show how to connect, get the list of
 467 commands (as a JSON dump), and how to get the information about the
 468 user currently logged in:</p>
 469
 470 <blockquote><pre>
 471 #!/usr/bin/env python
 472 import getpass
 473 import xmlrpclib
 474 server_url = 'https://cerebrum-uio.uio.no:8000';
 475 username = getpass.getuser()
 476 password = getpass.getpass()
 477 server = xmlrpclib.Server(server_url);
 478 #print server.get_commands(sessionid)
 479 sessionid = server.login(username, password)
 480 print server.run_command(sessionid, "user_info", username)
 481 result = server.logout(sessionid)
 482 print result
 483 </pre></blockquote>
 484
 485 <p>Armed with this knowledge I can now move forward and script the DNS
 486 and DHCP updates I wanted to do.</p>
 487
 488       </div>
 489       <div class="tags">
 490
 491
 492         Tags: <a href="https://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="https://people.skolelinux.org/pere/blog/tags/sysadmin">sysadmin</a>.
 493
 494
 495       </div>
 496     </div>
 497     <div class="padding"></div>
 498
 499     <p style="text-align: right;"><a href="sysadmin.rss"><img src="https://people.skolelinux.org/pere/blog/xml.gif" alt="RSS Feed" width="36" height="14" /></a></p>
 500     <div id="sidebar">
 501
 502
 503
 504 <h2>Archive</h2>
 505 <ul>
 506
 507 <li>2025
 508 <ul>
 509
 510 <li><a href="https://people.skolelinux.org/pere/blog/archive/2025/01/">January (1)</a></li>
 511
 512 </ul></li>
 513
 514 <li>2023
 515 <ul>
 516
 517 <li><a href="https://people.skolelinux.org/pere/blog/archive/2023/01/">January (3)</a></li>
 518
 519 <li><a href="https://people.skolelinux.org/pere/blog/archive/2023/02/">February (1)</a></li>
 520
 521 <li><a href="https://people.skolelinux.org/pere/blog/archive/2023/04/">April (2)</a></li>
 522
 523 <li><a href="https://people.skolelinux.org/pere/blog/archive/2023/05/">May (3)</a></li>
 524
 525 <li><a href="https://people.skolelinux.org/pere/blog/archive/2023/06/">June (1)</a></li>
 526
 527 <li><a href="https://people.skolelinux.org/pere/blog/archive/2023/08/">August (1)</a></li>
 528
 529 <li><a href="https://people.skolelinux.org/pere/blog/archive/2023/09/">September (1)</a></li>
 530
 531 <li><a href="https://people.skolelinux.org/pere/blog/archive/2023/10/">October (1)</a></li>
 532
 533 <li><a href="https://people.skolelinux.org/pere/blog/archive/2023/11/">November (4)</a></li>
 534
 535 <li><a href="https://people.skolelinux.org/pere/blog/archive/2023/12/">December (1)</a></li>
 536
 537 </ul></li>
 538
 539 <li>2022
 540 <ul>
 541
 542 <li><a href="https://people.skolelinux.org/pere/blog/archive/2022/02/">February (1)</a></li>
 543
 544 <li><a href="https://people.skolelinux.org/pere/blog/archive/2022/03/">March (3)</a></li>
 545
 546 <li><a href="https://people.skolelinux.org/pere/blog/archive/2022/04/">April (2)</a></li>
 547
 548 <li><a href="https://people.skolelinux.org/pere/blog/archive/2022/06/">June (2)</a></li>
 549
 550 <li><a href="https://people.skolelinux.org/pere/blog/archive/2022/07/">July (1)</a></li>
 551
 552 <li><a href="https://people.skolelinux.org/pere/blog/archive/2022/09/">September (1)</a></li>
 553
 554 <li><a href="https://people.skolelinux.org/pere/blog/archive/2022/10/">October (1)</a></li>
 555
 556 <li><a href="https://people.skolelinux.org/pere/blog/archive/2022/12/">December (1)</a></li>
 557
 558 </ul></li>
 559
 560 <li>2021
 561 <ul>
 562
 563 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/01/">January (2)</a></li>
 564
 565 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/02/">February (1)</a></li>
 566
 567 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/05/">May (1)</a></li>
 568
 569 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/06/">June (1)</a></li>
 570
 571 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/07/">July (3)</a></li>
 572
 573 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/08/">August (1)</a></li>
 574
 575 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/09/">September (1)</a></li>
 576
 577 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/10/">October (1)</a></li>
 578
 579 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/12/">December (1)</a></li>
 580
 581 </ul></li>
 582
 583 <li>2020
 584 <ul>
 585
 586 <li><a href="https://people.skolelinux.org/pere/blog/archive/2020/02/">February (2)</a></li>
 587
 588 <li><a href="https://people.skolelinux.org/pere/blog/archive/2020/03/">March (2)</a></li>
 589
 590 <li><a href="https://people.skolelinux.org/pere/blog/archive/2020/04/">April (2)</a></li>
 591
 592 <li><a href="https://people.skolelinux.org/pere/blog/archive/2020/05/">May (3)</a></li>
 593
 594 <li><a href="https://people.skolelinux.org/pere/blog/archive/2020/06/">June (2)</a></li>
 595
 596 <li><a href="https://people.skolelinux.org/pere/blog/archive/2020/07/">July (1)</a></li>
 597
 598 <li><a href="https://people.skolelinux.org/pere/blog/archive/2020/09/">September (1)</a></li>
 599
 600 <li><a href="https://people.skolelinux.org/pere/blog/archive/2020/10/">October (1)</a></li>
 601
 602 <li><a href="https://people.skolelinux.org/pere/blog/archive/2020/11/">November (1)</a></li>
 603
 604 </ul></li>
 605
 606 <li>2019
 607 <ul>
 608
 609 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/01/">January (4)</a></li>
 610
 611 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/02/">February (3)</a></li>
 612
 613 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/03/">March (3)</a></li>
 614
 615 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/05/">May (2)</a></li>
 616
 617 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/06/">June (5)</a></li>
 618
 619 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/07/">July (2)</a></li>
 620
 621 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/08/">August (1)</a></li>
 622
 623 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/09/">September (1)</a></li>
 624
 625 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/11/">November (1)</a></li>
 626
 627 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/12/">December (4)</a></li>
 628
 629 </ul></li>
 630
 631 <li>2018
 632 <ul>
 633
 634 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/01/">January (1)</a></li>
 635
 636 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/02/">February (5)</a></li>
 637
 638 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/03/">March (5)</a></li>
 639
 640 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/04/">April (3)</a></li>
 641
 642 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/06/">June (2)</a></li>
 643
 644 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/07/">July (5)</a></li>
 645
 646 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/08/">August (3)</a></li>
 647
 648 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/09/">September (3)</a></li>
 649
 650 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/10/">October (5)</a></li>
 651
 652 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/11/">November (2)</a></li>
 653
 654 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/12/">December (4)</a></li>
 655
 656 </ul></li>
 657
 658 <li>2017
 659 <ul>
 660
 661 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/01/">January (4)</a></li>
 662
 663 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/02/">February (3)</a></li>
 664
 665 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/03/">March (5)</a></li>
 666
 667 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/04/">April (2)</a></li>
 668
 669 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/06/">June (5)</a></li>
 670
 671 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/07/">July (1)</a></li>
 672
 673 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/08/">August (1)</a></li>
 674
 675 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/09/">September (3)</a></li>
 676
 677 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/10/">October (5)</a></li>
 678
 679 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/11/">November (3)</a></li>
 680
 681 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/12/">December (4)</a></li>
 682
 683 </ul></li>
 684
 685 <li>2016
 686 <ul>
 687
 688 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/01/">January (3)</a></li>
 689
 690 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/02/">February (2)</a></li>
 691
 692 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/03/">March (3)</a></li>
 693
 694 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/04/">April (8)</a></li>
 695
 696 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/05/">May (8)</a></li>
 697
 698 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/06/">June (2)</a></li>
 699
 700 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/07/">July (2)</a></li>
 701
 702 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/08/">August (5)</a></li>
 703
 704 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/09/">September (2)</a></li>
 705
 706 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/10/">October (3)</a></li>
 707
 708 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/11/">November (8)</a></li>
 709
 710 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/12/">December (5)</a></li>
 711
 712 </ul></li>
 713
 714 <li>2015
 715 <ul>
 716
 717 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/01/">January (7)</a></li>
 718
 719 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/02/">February (6)</a></li>
 720
 721 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/03/">March (1)</a></li>
 722
 723 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/04/">April (4)</a></li>
 724
 725 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/05/">May (3)</a></li>
 726
 727 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/06/">June (4)</a></li>
 728
 729 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/07/">July (6)</a></li>
 730
 731 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/08/">August (2)</a></li>
 732
 733 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/09/">September (2)</a></li>
 734
 735 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/10/">October (9)</a></li>
 736
 737 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/11/">November (6)</a></li>
 738
 739 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/12/">December (3)</a></li>
 740
 741 </ul></li>
 742
 743 <li>2014
 744 <ul>
 745
 746 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/01/">January (2)</a></li>
 747
 748 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/02/">February (3)</a></li>
 749
 750 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/03/">March (8)</a></li>
 751
 752 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/04/">April (7)</a></li>
 753
 754 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/05/">May (1)</a></li>
 755
 756 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/06/">June (2)</a></li>
 757
 758 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/07/">July (2)</a></li>
 759
 760 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/08/">August (2)</a></li>
 761
 762 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/09/">September (5)</a></li>
 763
 764 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/10/">October (6)</a></li>
 765
 766 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/11/">November (3)</a></li>
 767
 768 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/12/">December (5)</a></li>
 769
 770 </ul></li>
 771
 772 <li>2013
 773 <ul>
 774
 775 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/01/">January (11)</a></li>
 776
 777 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/02/">February (9)</a></li>
 778
 779 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/03/">March (9)</a></li>
 780
 781 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/04/">April (6)</a></li>
 782
 783 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/05/">May (9)</a></li>
 784
 785 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/06/">June (10)</a></li>
 786
 787 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/07/">July (7)</a></li>
 788
 789 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/08/">August (3)</a></li>
 790
 791 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/09/">September (5)</a></li>
 792
 793 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/10/">October (7)</a></li>
 794
 795 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/11/">November (9)</a></li>
 796
 797 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/12/">December (3)</a></li>
 798
 799 </ul></li>
 800
 801 <li>2012
 802 <ul>
 803
 804 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/01/">January (7)</a></li>
 805
 806 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/02/">February (10)</a></li>
 807
 808 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/03/">March (17)</a></li>
 809
 810 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/04/">April (12)</a></li>
 811
 812 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/05/">May (12)</a></li>
 813
 814 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/06/">June (20)</a></li>
 815
 816 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/07/">July (17)</a></li>
 817
 818 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/08/">August (6)</a></li>
 819
 820 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/09/">September (9)</a></li>
 821
 822 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/10/">October (17)</a></li>
 823
 824 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/11/">November (10)</a></li>
 825
 826 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/12/">December (7)</a></li>
 827
 828 </ul></li>
 829
 830 <li>2011
 831 <ul>
 832
 833 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/01/">January (16)</a></li>
 834
 835 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/02/">February (6)</a></li>
 836
 837 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/03/">March (6)</a></li>
 838
 839 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/04/">April (7)</a></li>
 840
 841 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/05/">May (3)</a></li>
 842
 843 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/06/">June (2)</a></li>
 844
 845 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/07/">July (7)</a></li>
 846
 847 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/08/">August (6)</a></li>
 848
 849 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/09/">September (4)</a></li>
 850
 851 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/10/">October (2)</a></li>
 852
 853 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/11/">November (3)</a></li>
 854
 855 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/12/">December (1)</a></li>
 856
 857 </ul></li>
 858
 859 <li>2010
 860 <ul>
 861
 862 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/01/">January (2)</a></li>
 863
 864 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/02/">February (1)</a></li>
 865
 866 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/03/">March (3)</a></li>
 867
 868 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/04/">April (3)</a></li>
 869
 870 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/05/">May (9)</a></li>
 871
 872 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/06/">June (14)</a></li>
 873
 874 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/07/">July (12)</a></li>
 875
 876 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/08/">August (13)</a></li>
 877
 878 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/09/">September (7)</a></li>
 879
 880 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/10/">October (9)</a></li>
 881
 882 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/11/">November (13)</a></li>
 883
 884 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/12/">December (12)</a></li>
 885
 886 </ul></li>
 887
 888 <li>2009
 889 <ul>
 890
 891 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/01/">January (8)</a></li>
 892
 893 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/02/">February (8)</a></li>
 894
 895 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/03/">March (12)</a></li>
 896
 897 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/04/">April (10)</a></li>
 898
 899 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/05/">May (9)</a></li>
 900
 901 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/06/">June (3)</a></li>
 902
 903 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/07/">July (4)</a></li>
 904
 905 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/08/">August (3)</a></li>
 906
 907 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/09/">September (1)</a></li>
 908
 909 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/10/">October (2)</a></li>
 910
 911 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/11/">November (3)</a></li>
 912
 913 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/12/">December (3)</a></li>
 914
 915 </ul></li>
 916
 917 <li>2008
 918 <ul>
 919
 920 <li><a href="https://people.skolelinux.org/pere/blog/archive/2008/11/">November (5)</a></li>
 921
 922 <li><a href="https://people.skolelinux.org/pere/blog/archive/2008/12/">December (7)</a></li>
 923
 924 </ul></li>
 925
 926 </ul>
 927
 928
 929
 930 <h2>Tags</h2>
 931 <ul>
 932
 933  <li><a href="https://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer (19)</a></li>
 934
 935  <li><a href="https://people.skolelinux.org/pere/blog/tags/amiga">amiga (1)</a></li>
 936
 937  <li><a href="https://people.skolelinux.org/pere/blog/tags/aros">aros (1)</a></li>
 938
 939  <li><a href="https://people.skolelinux.org/pere/blog/tags/bankid">bankid (4)</a></li>
 940
 941  <li><a href="https://people.skolelinux.org/pere/blog/tags/betalkontant">betalkontant (9)</a></li>
 942
 943  <li><a href="https://people.skolelinux.org/pere/blog/tags/bitcoin">bitcoin (12)</a></li>
 944
 945  <li><a href="https://people.skolelinux.org/pere/blog/tags/bootsystem">bootsystem (17)</a></li>
 946
 947  <li><a href="https://people.skolelinux.org/pere/blog/tags/bsa">bsa (2)</a></li>
 948
 949  <li><a href="https://people.skolelinux.org/pere/blog/tags/chrpath">chrpath (3)</a></li>
 950
 951  <li><a href="https://people.skolelinux.org/pere/blog/tags/debian">debian (197)</a></li>
 952
 953  <li><a href="https://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (159)</a></li>
 954
 955  <li><a href="https://people.skolelinux.org/pere/blog/tags/debian-handbook">debian-handbook (9)</a></li>
 956
 957  <li><a href="https://people.skolelinux.org/pere/blog/tags/digistan">digistan (11)</a></li>
 958
 959  <li><a href="https://people.skolelinux.org/pere/blog/tags/dld">dld (18)</a></li>
 960
 961  <li><a href="https://people.skolelinux.org/pere/blog/tags/docbook">docbook (32)</a></li>
 962
 963  <li><a href="https://people.skolelinux.org/pere/blog/tags/drivstoffpriser">drivstoffpriser (4)</a></li>
 964
 965  <li><a href="https://people.skolelinux.org/pere/blog/tags/english">english (456)</a></li>
 966
 967  <li><a href="https://people.skolelinux.org/pere/blog/tags/fiksgatami">fiksgatami (23)</a></li>
 968
 969  <li><a href="https://people.skolelinux.org/pere/blog/tags/fildeling">fildeling (14)</a></li>
 970
 971  <li><a href="https://people.skolelinux.org/pere/blog/tags/freeculture">freeculture (34)</a></li>
 972
 973  <li><a href="https://people.skolelinux.org/pere/blog/tags/freedombox">freedombox (9)</a></li>
 974
 975  <li><a href="https://people.skolelinux.org/pere/blog/tags/frikanalen">frikanalen (20)</a></li>
 976
 977  <li><a href="https://people.skolelinux.org/pere/blog/tags/h264">h264 (20)</a></li>
 978
 979  <li><a href="https://people.skolelinux.org/pere/blog/tags/intervju">intervju (43)</a></li>
 980
 981  <li><a href="https://people.skolelinux.org/pere/blog/tags/isenkram">isenkram (16)</a></li>
 982
 983  <li><a href="https://people.skolelinux.org/pere/blog/tags/kart">kart (23)</a></li>
 984
 985  <li><a href="https://people.skolelinux.org/pere/blog/tags/kodi">kodi (6)</a></li>
 986
 987  <li><a href="https://people.skolelinux.org/pere/blog/tags/ldap">ldap (9)</a></li>
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 989  <li><a href="https://people.skolelinux.org/pere/blog/tags/lego">lego (5)</a></li>
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 991  <li><a href="https://people.skolelinux.org/pere/blog/tags/lenker">lenker (8)</a></li>
 992
 993  <li><a href="https://people.skolelinux.org/pere/blog/tags/linuxcnc">linuxcnc (5)</a></li>
 994
 995  <li><a href="https://people.skolelinux.org/pere/blog/tags/lsdvd">lsdvd (2)</a></li>
 996
 997  <li><a href="https://people.skolelinux.org/pere/blog/tags/ltsp">ltsp (1)</a></li>
 998
 999  <li><a href="https://people.skolelinux.org/pere/blog/tags/madewithcc">madewithcc (3)</a></li>
1000
1001  <li><a href="https://people.skolelinux.org/pere/blog/tags/mesh network">mesh network (8)</a></li>
1002
1003  <li><a href="https://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (46)</a></li>
1004
1005  <li><a href="https://people.skolelinux.org/pere/blog/tags/nice free software">nice free software (15)</a></li>
1006
1007  <li><a href="https://people.skolelinux.org/pere/blog/tags/noark5">noark5 (24)</a></li>
1008
1009  <li><a href="https://people.skolelinux.org/pere/blog/tags/norsk">norsk (323)</a></li>
1010
1011  <li><a href="https://people.skolelinux.org/pere/blog/tags/nuug">nuug (198)</a></li>
1012
1013  <li><a href="https://people.skolelinux.org/pere/blog/tags/offentlig innsyn">offentlig innsyn (40)</a></li>
1014
1015  <li><a href="https://people.skolelinux.org/pere/blog/tags/open311">open311 (2)</a></li>
1016
1017  <li><a href="https://people.skolelinux.org/pere/blog/tags/opensnitch">opensnitch (4)</a></li>
1018
1019  <li><a href="https://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (76)</a></li>
1020
1021  <li><a href="https://people.skolelinux.org/pere/blog/tags/personvern">personvern (114)</a></li>
1022
1023  <li><a href="https://people.skolelinux.org/pere/blog/tags/raid">raid (2)</a></li>
1024
1025  <li><a href="https://people.skolelinux.org/pere/blog/tags/reactos">reactos (1)</a></li>
1026
1027  <li><a href="https://people.skolelinux.org/pere/blog/tags/reprap">reprap (11)</a></li>
1028
1029  <li><a href="https://people.skolelinux.org/pere/blog/tags/rfid">rfid (3)</a></li>
1030
1031  <li><a href="https://people.skolelinux.org/pere/blog/tags/robot">robot (17)</a></li>
1032
1033  <li><a href="https://people.skolelinux.org/pere/blog/tags/rss">rss (1)</a></li>
1034
1035  <li><a href="https://people.skolelinux.org/pere/blog/tags/ruter">ruter (7)</a></li>
1036
1037  <li><a href="https://people.skolelinux.org/pere/blog/tags/scraperwiki">scraperwiki (2)</a></li>
1038
1039  <li><a href="https://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (60)</a></li>
1040
1041  <li><a href="https://people.skolelinux.org/pere/blog/tags/sitesummary">sitesummary (4)</a></li>
1042
1043  <li><a href="https://people.skolelinux.org/pere/blog/tags/skepsis">skepsis (5)</a></li>
1044
1045  <li><a href="https://people.skolelinux.org/pere/blog/tags/standard">standard (75)</a></li>
1046
1047  <li><a href="https://people.skolelinux.org/pere/blog/tags/stavekontroll">stavekontroll (7)</a></li>
1048
1049  <li><a href="https://people.skolelinux.org/pere/blog/tags/stortinget">stortinget (14)</a></li>
1050
1051  <li><a href="https://people.skolelinux.org/pere/blog/tags/surveillance">surveillance (65)</a></li>
1052
1053  <li><a href="https://people.skolelinux.org/pere/blog/tags/sysadmin">sysadmin (5)</a></li>
1054
1055  <li><a href="https://people.skolelinux.org/pere/blog/tags/usenix">usenix (2)</a></li>
1056
1057  <li><a href="https://people.skolelinux.org/pere/blog/tags/valg">valg (9)</a></li>
1058
1059  <li><a href="https://people.skolelinux.org/pere/blog/tags/verkidetfri">verkidetfri (22)</a></li>
1060
1061  <li><a href="https://people.skolelinux.org/pere/blog/tags/video">video (80)</a></li>
1062
1063  <li><a href="https://people.skolelinux.org/pere/blog/tags/vitenskap">vitenskap (4)</a></li>
1064
1065  <li><a href="https://people.skolelinux.org/pere/blog/tags/web">web (42)</a></li>
1066
1067 </ul>
1068
1069
1070     </div>
1071     <p style="text-align: right">
1072  Created by <a href="http://steve.org.uk/Software/chronicle">Chronicle v4.6</a>
1073 </p>
1074
1075   </body>
1076 </html>