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  13  <h1>
  14      <a href="http://people.skolelinux.org/pere/blog/">Petter Reinholdtsen</a>
  15
  16  </h1>
  17
  18 </div>
  19
  20
  21     <h3>Entries tagged "nice free software".</h3>
  22
  23     <div class="entry">
  24       <div class="title">
  25         <a href="http://people.skolelinux.org/pere/blog/OpenALPR__find_car_license_plates_in_video_streams___nice_free_software.html">OpenALPR, find car license plates in video streams - nice free software</a>
  26       </div>
  27       <div class="date">
  28         23rd December 2015
  29       </div>
  30       <div class="body">
  31         <p>When I was a kid, we used to collect "car numbers", as we used to
  32 call the car license plate numbers in those days.  I would write the
  33 numbers down in my little book and compare notes with the other kids
  34 to see how many region codes we had seen and if we had seen some
  35 exotic or special region codes and numbers.  It was a fun game to pass
  36 time, as we kids have plenty of it.</p>
  37
  38 <p>A few days I came across
  39 <a href="https://github.com/openalpr/openalpr">the OpenALPR
  40 project</a>, a free software project to automatically discover and
  41 report license plates in images and video streams, and provide the
  42 "car numbers" in a machine readable format.  I've been looking for
  43 such system for a while now, because I believe it is a bad idea that the
  44 <a href="https://en.wikipedia.org/wiki/Automatic_number_plate_recognition">automatic
  45 number plate recognition</a> tool only is available in the hands of
  46 the powerful, and want it to be available also for the powerless to
  47 even the score when it comes to surveillance and sousveillance.  I
  48 discovered the developer
  49 <a href="https://bugs.debian.org/747509">wanted to get the tool into
  50 Debian</a>, and as I too wanted it to be in Debian, I volunteered to
  51 help him get it into shape to get the package uploaded into the Debian
  52 archive.</p>
  53
  54 <p>Today we finally managed to get the package into shape and uploaded
  55 it into Debian, where it currently
  56 <a href="https://ftp-master.debian.org//new/openalpr_2.2.1-1.html">waits
  57 in the NEW queue</a> for review by the Debian ftpmasters.</p>
  58
  59 <p>I guess you are wondering why on earth such tool would be useful
  60 for the common folks, ie those not running a large government
  61 surveillance system?  Well, I plan to put it in a computer on my bike
  62 and in my car, tracking the cars nearby and allowing me to be notified
  63 when number plates on my watch list are discovered.  Another use case
  64 was suggested by a friend of mine, who wanted to set it up at his home
  65 to open the car port automatically when it discovered the plate on his
  66 car.  When I mentioned it perhaps was a bit foolhardy to allow anyone
  67 capable of placing his license plate number of a piece of cardboard to
  68 open his car port, men replied that it was always unlocked anyway.  I
  69 guess for such use case it make sense.  I am sure there are other use
  70 cases too, for those with imagination and a vision.</p>
  71
  72 <p>If you want to build your own version of the Debian package, check
  73 out the upstream git source and symlink ./distros/debian to ./debian/
  74 before running "debuild" to build the source.  Or wait a bit until the
  75 package show up in unstable.</p>
  76
  77       </div>
  78       <div class="tags">
  79
  80
  81         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/nice free software">nice free software</a>.
  82
  83
  84       </div>
  85     </div>
  86     <div class="padding"></div>
  87
  88     <div class="entry">
  89       <div class="title">
  90         <a href="http://people.skolelinux.org/pere/blog/listadmin__the_quick_way_to_moderate_mailman_lists___nice_free_software.html">listadmin, the quick way to moderate mailman lists - nice free software</a>
  91       </div>
  92       <div class="date">
  93         22nd October 2014
  94       </div>
  95       <div class="body">
  96         <p>If you ever had to moderate a mailman list, like the ones on
  97 alioth.debian.org, you know the web interface is fairly slow to
  98 operate.  First you visit one web page, enter the moderation password
  99 and get a new page shown with a list of all the messages to moderate
 100 and various options for each email address.  This take a while for
 101 every list you moderate, and you need to do it regularly to do a good
 102 job as a list moderator.  But there is a quick alternative,
 103 <a href="http://heim.ifi.uio.no/kjetilho/hacks/#listadmin">the
 104 listadmin program</a>.  It allow you to check lists for new messages
 105 to moderate in a fraction of a second.  Here is a test run on two
 106 lists I recently took over:</p>
 107
 108 <p><blockquote><pre>
 109 % time listadmin xiph
 110 fetching data for pkg-xiph-commits@lists.alioth.debian.org ... nothing in queue
 111 fetching data for pkg-xiph-maint@lists.alioth.debian.org ... nothing in queue
 112
 113 real    0m1.709s
 114 user    0m0.232s
 115 sys     0m0.012s
 116 %
 117 </pre></blockquote></p>
 118
 119 <p>In 1.7 seconds I had checked two mailing lists and confirmed that
 120 there are no message in the moderation queue.  Every morning I
 121 currently moderate 68 mailman lists, and it normally take around two
 122 minutes.  When I took over the two pkg-xiph lists above a few days
 123 ago, there were 400 emails waiting in the moderator queue.  It took me
 124 less than 15 minutes to process them all using the listadmin
 125 program.</p>
 126
 127 <p>If you install
 128 <a href="https://tracker.debian.org/pkg/listadmin">the listadmin
 129 package</a> from Debian and create a file <tt>~/.listadmin.ini</tt>
 130 with content like this, the moderation task is a breeze:</p>
 131
 132 <p><blockquote><pre>
 133 username username@example.org
 134 spamlevel 23
 135 default discard
 136 discard_if_reason "Posting restricted to members only. Remove us from your mail list."
 137
 138 password secret
 139 adminurl https://{domain}/mailman/admindb/{list}
 140 mailman-list@lists.example.com
 141
 142 password hidden
 143 other-list@otherserver.example.org
 144 </pre></blockquote></p>
 145
 146 <p>There are other options to set as well.  Check the manual page to
 147 learn the details.</p>
 148
 149 <p>If you are forced to moderate lists on a mailman installation where
 150 the SSL certificate is self signed or not properly signed by a
 151 generally accepted signing authority, you can set a environment
 152 variable when calling listadmin to disable SSL verification:</p>
 153
 154 <p><blockquote><pre>
 155 PERL_LWP_SSL_VERIFY_HOSTNAME=0 listadmin
 156 </pre></blockquote></p>
 157
 158 <p>If you want to moderate a subset of the lists you take care of, you
 159 can provide an argument to the listadmin script like I do in the
 160 initial screen dump (the xiph argument).  Using an argument, only
 161 lists matching the argument string will be processed.  This make it
 162 quick to accept messages if you notice the moderation request in your
 163 email.</p>
 164
 165 <p>Without the listadmin program, I would never be the moderator of 68
 166 mailing lists, as I simply do not have time to spend on that if the
 167 process was any slower. The listadmin program have saved me hours of
 168 time I could spend elsewhere over the years.  It truly is nice free
 169 software.</p>
 170
 171 <p>As usual, if you use Bitcoin and want to show your support of my
 172 activities, please send Bitcoin donations to my address
 173 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&label=PetterReinholdtsenBlog">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 174
 175 <p>Update 2014-10-27: Added missing 'username' statement in
 176 configuration example.  Also, I've been told that the
 177 PERL_LWP_SSL_VERIFY_HOSTNAME=0 setting do not work for everyone.  Not
 178 sure why.</p>
 179
 180       </div>
 181       <div class="tags">
 182
 183
 184         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/nice free software">nice free software</a>.
 185
 186
 187       </div>
 188     </div>
 189     <div class="padding"></div>
 190
 191     <div class="entry">
 192       <div class="title">
 193         <a href="http://people.skolelinux.org/pere/blog/S3QL__a_locally_mounted_cloud_file_system___nice_free_software.html">S3QL, a locally mounted cloud file system - nice free software</a>
 194       </div>
 195       <div class="date">
 196          9th April 2014
 197       </div>
 198       <div class="body">
 199         <p>For a while now, I have been looking for a sensible offsite backup
 200 solution for use at home.  My requirements are simple, it must be
 201 cheap and locally encrypted (in other words, I keep the encryption
 202 keys, the storage provider do not have access to my private files).
 203 One idea me and my friends had many years ago, before the cloud
 204 storage providers showed up, was to use Google mail as storage,
 205 writing a Linux block device storing blocks as emails in the mail
 206 service provided by Google, and thus get heaps of free space.  On top
 207 of this one can add encryption, RAID and volume management to have
 208 lots of (fairly slow, I admit that) cheap and encrypted storage.  But
 209 I never found time to implement such system.  But the last few weeks I
 210 have looked at a system called
 211 <a href="https://bitbucket.org/nikratio/s3ql/">S3QL</a>, a locally
 212 mounted network backed file system with the features I need.</p>
 213
 214 <p>S3QL is a fuse file system with a local cache and cloud storage,
 215 handling several different storage providers, any with Amazon S3,
 216 Google Drive or OpenStack API.  There are heaps of such storage
 217 providers.  S3QL can also use a local directory as storage, which
 218 combined with sshfs allow for file storage on any ssh server.  S3QL
 219 include support for encryption, compression, de-duplication, snapshots
 220 and immutable file systems, allowing me to mount the remote storage as
 221 a local mount point, look at and use the files as if they were local,
 222 while the content is stored in the cloud as well.  This allow me to
 223 have a backup that should survive fire.  The file system can not be
 224 shared between several machines at the same time, as only one can
 225 mount it at the time, but any machine with the encryption key and
 226 access to the storage service can mount it if it is unmounted.</p>
 227
 228 <p>It is simple to use.  I'm using it on Debian Wheezy, where the
 229 package is included already.  So to get started, run <tt>apt-get
 230 install s3ql</tt>.  Next, pick a storage provider.  I ended up picking
 231 Greenqloud, after reading their nice recipe on
 232 <a href="https://greenqloud.zendesk.com/entries/44611757-How-To-Use-S3QL-to-mount-a-StorageQloud-bucket-on-Debian-Wheezy">how
 233 to use S3QL with their Amazon S3 service</a>, because I trust the laws
 234 in Iceland more than those in USA when it come to keeping my personal
 235 data safe and private, and thus would rather spend money on a company
 236 in Iceland.  Another nice recipe is available from the article
 237 <a href="http://www.admin-magazine.com/HPC/Articles/HPC-Cloud-Storage">S3QL
 238 Filesystem for HPC Storage</a> by Jeff Layton in the HPC section of
 239 Admin magazine.  When the provider is picked, figure out how to get
 240 the API key needed to connect to the storage API.  With Greencloud,
 241 the key did not show up until I had added payment details to my
 242 account.</p>
 243
 244 <p>Armed with the API access details, it is time to create the file
 245 system.  First, create a new bucket in the cloud.  This bucket is the
 246 file system storage area.  I picked a bucket name reflecting the
 247 machine that was going to store data there, but any name will do.
 248 I'll refer to it as <tt>bucket-name</tt> below.  In addition, one need
 249 the API login and password, and a locally created password.  Store it
 250 all in ~root/.s3ql/authinfo2 like this:
 251
 252 <p><blockquote><pre>
 253 [s3c]
 254 storage-url: s3c://s.greenqloud.com:443/bucket-name
 255 backend-login: API-login
 256 backend-password: API-password
 257 fs-passphrase: local-password
 258 </pre></blockquote></p>
 259
 260 <p>I create my local passphrase using <tt>pwget 50</tt> or similar,
 261 but any sensible way to create a fairly random password should do it.
 262 Armed with these details, it is now time to run mkfs, entering the API
 263 details and password to create it:</p>
 264
 265 <p><blockquote><pre>
 266 # mkdir -m 700 /var/lib/s3ql-cache
 267 # mkfs.s3ql --cachedir /var/lib/s3ql-cache --authfile /root/.s3ql/authinfo2 \
 268   --ssl s3c://s.greenqloud.com:443/bucket-name
 269 Enter backend login:
 270 Enter backend password:
 271 Before using S3QL, make sure to read the user's guide, especially
 272 the 'Important Rules to Avoid Loosing Data' section.
 273 Enter encryption password:
 274 Confirm encryption password:
 275 Generating random encryption key...
 276 Creating metadata tables...
 277 Dumping metadata...
 278 ..objects..
 279 ..blocks..
 280 ..inodes..
 281 ..inode_blocks..
 282 ..symlink_targets..
 283 ..names..
 284 ..contents..
 285 ..ext_attributes..
 286 Compressing and uploading metadata...
 287 Wrote 0.00 MB of compressed metadata.
 288 # </pre></blockquote></p>
 289
 290 <p>The next step is mounting the file system to make the storage available.
 291
 292 <p><blockquote><pre>
 293 # mount.s3ql --cachedir /var/lib/s3ql-cache --authfile /root/.s3ql/authinfo2 \
 294   --ssl --allow-root s3c://s.greenqloud.com:443/bucket-name /s3ql
 295 Using 4 upload threads.
 296 Downloading and decompressing metadata...
 297 Reading metadata...
 298 ..objects..
 299 ..blocks..
 300 ..inodes..
 301 ..inode_blocks..
 302 ..symlink_targets..
 303 ..names..
 304 ..contents..
 305 ..ext_attributes..
 306 Mounting filesystem...
 307 # df -h /s3ql
 308 Filesystem                              Size  Used Avail Use% Mounted on
 309 s3c://s.greenqloud.com:443/bucket-name  1.0T     0  1.0T   0% /s3ql
 310 #
 311 </pre></blockquote></p>
 312
 313 <p>The file system is now ready for use.  I use rsync to store my
 314 backups in it, and as the metadata used by rsync is downloaded at
 315 mount time, no network traffic (and storage cost) is triggered by
 316 running rsync.  To unmount, one should not use the normal umount
 317 command, as this will not flush the cache to the cloud storage, but
 318 instead running the umount.s3ql command like this:
 319
 320 <p><blockquote><pre>
 321 # umount.s3ql /s3ql
 322 #
 323 </pre></blockquote></p>
 324
 325 <p>There is a fsck command available to check the file system and
 326 correct any problems detected.  This can be used if the local server
 327 crashes while the file system is mounted, to reset the "already
 328 mounted" flag.  This is what it look like when processing a working
 329 file system:</p>
 330
 331 <p><blockquote><pre>
 332 # fsck.s3ql --force --ssl s3c://s.greenqloud.com:443/bucket-name
 333 Using cached metadata.
 334 File system seems clean, checking anyway.
 335 Checking DB integrity...
 336 Creating temporary extra indices...
 337 Checking lost+found...
 338 Checking cached objects...
 339 Checking names (refcounts)...
 340 Checking contents (names)...
 341 Checking contents (inodes)...
 342 Checking contents (parent inodes)...
 343 Checking objects (reference counts)...
 344 Checking objects (backend)...
 345 ..processed 5000 objects so far..
 346 ..processed 10000 objects so far..
 347 ..processed 15000 objects so far..
 348 Checking objects (sizes)...
 349 Checking blocks (referenced objects)...
 350 Checking blocks (refcounts)...
 351 Checking inode-block mapping (blocks)...
 352 Checking inode-block mapping (inodes)...
 353 Checking inodes (refcounts)...
 354 Checking inodes (sizes)...
 355 Checking extended attributes (names)...
 356 Checking extended attributes (inodes)...
 357 Checking symlinks (inodes)...
 358 Checking directory reachability...
 359 Checking unix conventions...
 360 Checking referential integrity...
 361 Dropping temporary indices...
 362 Backing up old metadata...
 363 Dumping metadata...
 364 ..objects..
 365 ..blocks..
 366 ..inodes..
 367 ..inode_blocks..
 368 ..symlink_targets..
 369 ..names..
 370 ..contents..
 371 ..ext_attributes..
 372 Compressing and uploading metadata...
 373 Wrote 0.89 MB of compressed metadata.
 374 #
 375 </pre></blockquote></p>
 376
 377 <p>Thanks to the cache, working on files that fit in the cache is very
 378 quick, about the same speed as local file access.  Uploading large
 379 amount of data is to me limited by the bandwidth out of and into my
 380 house.  Uploading 685 MiB with a 100 MiB cache gave me 305 kiB/s,
 381 which is very close to my upload speed, and downloading the same
 382 Debian installation ISO gave me 610 kiB/s, close to my download speed.
 383 Both were measured using <tt>dd</tt>.  So for me, the bottleneck is my
 384 network, not the file system code.  I do not know what a good cache
 385 size would be, but suspect that the cache should e larger than your
 386 working set.</p>
 387
 388 <p>I mentioned that only one machine can mount the file system at the
 389 time.  If another machine try, it is told that the file system is
 390 busy:</p>
 391
 392 <p><blockquote><pre>
 393 # mount.s3ql --cachedir /var/lib/s3ql-cache --authfile /root/.s3ql/authinfo2 \
 394   --ssl --allow-root s3c://s.greenqloud.com:443/bucket-name /s3ql
 395 Using 8 upload threads.
 396 Backend reports that fs is still mounted elsewhere, aborting.
 397 #
 398 </pre></blockquote></p>
 399
 400 <p>The file content is uploaded when the cache is full, while the
 401 metadata is uploaded once every 24 hour by default.  To ensure the
 402 file system content is flushed to the cloud, one can either umount the
 403 file system, or ask S3QL to flush the cache and metadata using
 404 s3qlctrl:
 405
 406 <p><blockquote><pre>
 407 # s3qlctrl upload-meta /s3ql
 408 # s3qlctrl flushcache /s3ql
 409 #
 410 </pre></blockquote></p>
 411
 412 <p>If you are curious about how much space your data uses in the
 413 cloud, and how much compression and deduplication cut down on the
 414 storage usage, you can use s3qlstat on the mounted file system to get
 415 a report:</p>
 416
 417 <p><blockquote><pre>
 418 # s3qlstat /s3ql
 419 Directory entries:    9141
 420 Inodes:               9143
 421 Data blocks:          8851
 422 Total data size:      22049.38 MB
 423 After de-duplication: 21955.46 MB (99.57% of total)
 424 After compression:    21877.28 MB (99.22% of total, 99.64% of de-duplicated)
 425 Database size:        2.39 MB (uncompressed)
 426 (some values do not take into account not-yet-uploaded dirty blocks in cache)
 427 #
 428 </pre></blockquote></p>
 429
 430 <p>I mentioned earlier that there are several possible suppliers of
 431 storage.  I did not try to locate them all, but am aware of at least
 432 <a href="https://www.greenqloud.com/">Greenqloud</a>,
 433 <a href="http://drive.google.com/">Google Drive</a>,
 434 <a href="http://aws.amazon.com/s3/">Amazon S3 web serivces</a>,
 435 <a href="http://www.rackspace.com/">Rackspace</a> and
 436 <a href="http://crowncloud.net/">Crowncloud</A>.  The latter even
 437 accept payment in Bitcoin.  Pick one that suit your need.  Some of
 438 them provide several GiB of free storage, but the prize models are
 439 quite different and you will have to figure out what suits you
 440 best.</p>
 441
 442 <p>While researching this blog post, I had a look at research papers
 443 and posters discussing the S3QL file system.  There are several, which
 444 told me that the file system is getting a critical check by the
 445 science community and increased my confidence in using it.  One nice
 446 poster is titled
 447 "<a href="http://www.lanl.gov/orgs/adtsc/publications/science_highlights_2013/docs/pg68_69.pdf">An
 448 Innovative Parallel Cloud Storage System using OpenStack’s SwiftObject
 449 Store and Transformative Parallel I/O Approach</a>" by Hsing-Bung
 450 Chen, Benjamin McClelland, David Sherrill, Alfred Torrez, Parks Fields
 451 and Pamela Smith.  Please  have a look.</p>
 452
 453 <p>Given my problems with different file systems earlier, I decided to
 454 check out the mounted S3QL file system to see if it would be usable as
 455 a home directory (in other word, that it provided POSIX semantics when
 456 it come to locking and umask handling etc).  Running
 457 <a href="http://people.skolelinux.org/pere/blog/Testing_if_a_file_system_can_be_used_for_home_directories___.html">my
 458 test code to check file system semantics</a>, I was happy to discover that
 459 no error was found.  So the file system can be used for home
 460 directories, if one chooses to do so.</p>
 461
 462 <p>If you do not want a locally file system, and want something that
 463 work without the Linux fuse file system, I would like to mention the
 464 <a href="http://www.tarsnap.com/">Tarsnap service</a>, which also
 465 provide locally encrypted backup using a command line client.  It have
 466 a nicer access control system, where one can split out read and write
 467 access, allowing some systems to write to the backup and others to
 468 only read from it.</p>
 469
 470 <p>As usual, if you use Bitcoin and want to show your support of my
 471 activities, please send Bitcoin donations to my address
 472 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&label=PetterReinholdtsenBlog">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 473
 474       </div>
 475       <div class="tags">
 476
 477
 478         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/nice free software">nice free software</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>.
 479
 480
 481       </div>
 482     </div>
 483     <div class="padding"></div>
 484
 485     <div class="entry">
 486       <div class="title">
 487         <a href="http://people.skolelinux.org/pere/blog/ReactOS_Windows_clone___nice_free_software.html">ReactOS Windows clone - nice free software</a>
 488       </div>
 489       <div class="date">
 490          1st April 2014
 491       </div>
 492       <div class="body">
 493         <p>Microsoft have announced that Windows XP reaches its end of life
 494 2014-04-08, in 7 days.  But there are heaps of machines still running
 495 Windows XP, and depending on Windows XP to run their applications, and
 496 upgrading will be expensive, both when it comes to money and when it
 497 comes to the amount of effort needed to migrate from Windows XP to a
 498 new operating system.  Some obvious options (buy new a Windows
 499 machine, buy a MacOSX machine, install Linux on the existing machine)
 500 are already well known and covered elsewhere.  Most of them involve
 501 leaving the user applications installed on Windows XP behind and
 502 trying out replacements or updated versions. In this blog post I want
 503 to mention one strange bird that allow people to keep the hardware and
 504 the existing Windows XP applications and run them on a free software
 505 operating system that is Windows XP compatible.</p>
 506
 507 <p><a href="http://www.reactos.org/">ReactOS</a> is a free software
 508 operating system (GNU GPL licensed) working on providing a operating
 509 system that is binary compatible with Windows, able to run windows
 510 programs directly and to use Windows drivers for hardware directly.
 511 The project goal is for Windows user to keep their existing machines,
 512 drivers and software, and gain the advantages from user a operating
 513 system without usage limitations caused by non-free licensing.  It is
 514 a Windows clone running directly on the hardware, so quite different
 515 from the approach taken by <a href="http://www.winehq.org/">the Wine
 516 project</a>, which make it possible to run Windows binaries on
 517 Linux.</p>
 518
 519 <p>The ReactOS project share code with the Wine project, so most
 520 shared libraries available on Windows are already implemented already.
 521 There is also a software manager like the one we are used to on Linux,
 522 allowing the user to install free software applications with a simple
 523 click directly from the Internet.  Check out the
 524 <a href="http://www.reactos.org/screenshots">screen shots on the
 525 project web site</a> for an idea what it look like (it looks just like
 526 Windows before metro).</p>
 527
 528 <p>I do not use ReactOS myself, preferring Linux and Unix like
 529 operating systems.  I've tested it, and it work fine in a virt-manager
 530 virtual machine.  The browser, minesweeper, notepad etc is working
 531 fine as far as I can tell.  Unfortunately, my main test application
 532 is the software included on a CD with the Lego Mindstorms NXT, which
 533 seem to install just fine from CD but fail to leave any binaries on
 534 the disk after the installation.  So no luck with that test software.
 535 No idea why, but hope someone else figure out and fix the problem.
 536 I've tried the ReactOS Live ISO on a physical machine, and it seemed
 537 to work just fine.  If you like Windows and want to keep running your
 538 old Windows binaries, check it out by
 539 <a href="http://www.reactos.org/download">downloading</a> the
 540 installation CD, the live CD or the preinstalled virtual machine
 541 image.</p>
 542
 543       </div>
 544       <div class="tags">
 545
 546
 547         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nice free software">nice free software</a>, <a href="http://people.skolelinux.org/pere/blog/tags/reactos">reactos</a>.
 548
 549
 550       </div>
 551     </div>
 552     <div class="padding"></div>
 553
 554     <div class="entry">
 555       <div class="title">
 556         <a href="http://people.skolelinux.org/pere/blog/Video_DVD_reader_library___python_dvdvideo___nice_free_software.html">Video DVD reader library / python-dvdvideo - nice free software</a>
 557       </div>
 558       <div class="date">
 559         21st March 2014
 560       </div>
 561       <div class="body">
 562         <p>Keeping your DVD collection safe from scratches and curious
 563 children fingers while still having it available when you want to see a
 564 movie is not straight forward.  My preferred method at the moment is
 565 to store a full copy of the ISO on a hard drive, and use VLC, Popcorn
 566 Hour or other useful players to view the resulting file.  This way the
 567 subtitles and bonus material are still available and using the ISO is
 568 just like inserting the original DVD record in the DVD player.</p>
 569
 570 <p>Earlier I used dd for taking security copies, but it do not handle
 571 DVDs giving read errors (which are quite a few of them).  I've also
 572 tried using
 573 <a href="http://people.skolelinux.org/pere/blog/Ripping_problematic_DVDs_using_dvdbackup_and_genisoimage.html">dvdbackup
 574 and genisoimage</a>, but these days I use the marvellous python library
 575 and program
 576 <a href="http://bblank.thinkmo.de/blog/new-software-python-dvdvideo">python-dvdvideo</a>
 577 written by Bastian Blank.  It is
 578 <a href="http://packages.qa.debian.org/p/python-dvdvideo.html">in Debian
 579 already</a> and the binary package name is python3-dvdvideo. Instead
 580 of trying to read every block from the DVD, it parses the file
 581 structure and figure out which block on the DVD is actually in used,
 582 and only read those blocks from the DVD.  This work surprisingly well,
 583 and I have been able to almost backup my entire DVD collection using
 584 this method.</p>
 585
 586 <p>So far, python-dvdvideo have failed on between 10 and
 587 20 DVDs, which is a small fraction of my collection.  The most common
 588 problem is
 589 <a href="https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=720831">DVDs
 590 using UTF-16 instead of UTF-8 characters</a>, which according to
 591 Bastian is against the DVD specification (and seem to cause some
 592 players to fail too).  A rarer problem is what seem to be inconsistent
 593 DVD structures, as the python library
 594 <a href="https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=723079">claim
 595 there is a overlap between objects</a>.  An equally rare problem claim
 596 <a href="https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=741878">some
 597 value is out of range</a>.  No idea what is going on there.  I wish I
 598 knew enough about the DVD format to fix these, to ensure my movie
 599 collection will stay with me in the future.</p>
 600
 601 <p>So, if you need to keep your DVDs safe, back them up using
 602 python-dvdvideo. :)</p>
 603
 604       </div>
 605       <div class="tags">
 606
 607
 608         Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nice free software">nice free software</a>, <a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett</a>, <a href="http://people.skolelinux.org/pere/blog/tags/video">video</a>.
 609
 610
 611       </div>
 612     </div>
 613     <div class="padding"></div>
 614
 615     <div class="entry">
 616       <div class="title">
 617         <a href="http://people.skolelinux.org/pere/blog/Free_Timetabling_Software___nice_free_software.html">Free Timetabling Software - nice free software</a>
 618       </div>
 619       <div class="date">
 620          7th July 2012
 621       </div>
 622       <div class="body">
 623         <p>Included in <a href="http://www.skolelinux.org/">Debian Edu /
 624 Skolelinux</a> is a large collection of end user and school specific
 625 software.  It is one of the packages not installed by default but
 626 provided in the Debian archive for schools to install if they want to,
 627 is a system to automatically plan the school time table using
 628 information about available teachers, classes and rooms, combined with
 629 the list of required courses and how many hours each topic should
 630 receive.  The software is
 631
 632 <a href="http://lalescu.ro/liviu/fet/">named FET</a>, and it provide a
 633 graphical user interface to input the required information, save the
 634 result in a fairly simple XML format, and generate time tables for
 635 both teachers and students.  It is available both for
 636 <a href="http://lalescu.ro/liviu/fet/download.html">Linux, MacOSX and
 637 Windows</a>.</p>
 638
 639 <p>This is <a href="http://lalescu.ro/liviu/fet/features.html">the
 640 feature list</a>, liftet from the project web site:</p>
 641
 642 <p><ul>
 643
 644   <li>FET is free software, licensed under the GNU GPL v2 or later.
 645     You can freely use, copy, modify and redistribute it </li>
 646
 647   <li>Localized to en_US (US English, default), ar (Arabic), ca
 648     (Catalan), da (Danish), de (German), el (Greek), es (Spanish), fa
 649     (Persian), fr (French), gl (Galician), he (Hebrew), hu
 650     (Hungarian), id (Indonesian), it (Italian), lt (Lithuanian), mk
 651     (Macedonian), ms (Malay), nl (Dutch), pl (Polish), pt_BR
 652     (Brazilian Portuguese), ro (Romanian), ru (Russian), si (Sinhala),
 653     sk (Slovak), sr (Serbian), tr (Turkish), uk (Ukrainian), uz
 654     (Uzbek) and vi (Vietnamese) (incompletely for some languages)
 655     </li>
 656
 657   <li>Fully automatic generation algorithm, allowing also
 658     semi-automatic or manual allocation</li>
 659
 660   <li>Platform independent implementation, allowing running on
 661     GNU/Linux, Windows, Mac and any system that Qt supports </li>
 662
 663   <li>Flexible modular XML format for the input file, allowing editing
 664     with an XML editor or by hand (besides FET interface)</li>
 665
 666   <li>Import/export from CSV format</li>
 667
 668   <li>The resulted timetables are exported into HTML, XML and CSV
 669     formats </li>
 670
 671   <li>Flexible students structure, organized into sets: years, groups
 672     and subgroups. FET allows overlapping years and groups and
 673     non-overlapping subgroups. You can even define individual students
 674     (as separate sets)</li>
 675
 676   <li>Each constraint has a weight percentage, from 0.0% to 100.0%
 677     (but some special constraints are allowed to have only 100% weight
 678     percentage)</li>
 679
 680   <li>Limits for the algorithm (all these limits can be increased on
 681     demand, as a custom version, because this would require a bit more
 682     memory):
 683     <ul>
 684       <li>Maximum total number of hours (periods) per day: 60</li>
 685       <li>Maximum number of working days per week: 35</li>
 686       <li>Maximum total number of teachers: 6000</li>
 687       <li>Maximum total number of sets of students: 30000</li>
 688       <li>Maximum total number of subjects: 6000</li>
 689       <li>Virtually unlimited number of activity tags</li>
 690       <li>Maximum number of activities: 30000</li>
 691       <li>Maximum number of rooms: 6000</li>
 692       <li>Maximum number of buildings: 6000</li>
 693       <li>Possibility of adding multiple teachers and
 694           students sets for each activity.  (it is possible
 695           also to have no teachers or no students sets for an
 696           activity)</li>
 697       <li>Virtually unlimited number of time constraints</li>
 698       <li>Virtually unlimited number of space constraints</li>
 699     </ul></li>
 700
 701   <li>A large and flexible palette of time constraints:
 702     <ul>
 703       <li>Break periods</li>
 704       <li>For teacher(s):
 705         <ul>
 706           <li>Not available periods</li>
 707           <li>Max/min days per week</li>
 708           <li>Max gaps per day/week</li>
 709           <li>Max hours daily/continuously</li>
 710           <li>Min hours daily</li>
 711           <li>Max hours daily/continuously with an activity tag</li>
 712
 713           <li>Respect working in an hourly interval a max number of
 714             days per week</li>
 715         </ul></li>
 716       <li>For students (sets):
 717         <ul>
 718           <li>Not available periods</li>
 719           <li>Begins early (specify max allowed beginnings at second hour)</li>
 720           <li>Max gaps per day/week</li>
 721           <li>Max hours daily/continuously</li>
 722           <li>Min hours daily</li>
 723           <li>Max hours daily/continuously with an activity tag</li>
 724
 725           <li>Respect working in an hourly interval a max number of
 726             days per week</li>
 727         </ul></li>
 728       <li>For an activity or a set of activities/subactivities:
 729         <ul>
 730           <li>A single preferred starting time</li>
 731           <li>A set of preferred starting times</li>
 732           <li>A set of preferred time slots</li>
 733           <li>Min/max days between them</li>
 734           <li>End(s) students day</li>
 735           <li>Same starting time/day/hour</li>
 736           <li>Occupy max time slots from selection (a complex and
 737             flexible constraint, useful in many situations)</li>
 738           <li>Consecutive, ordered, grouped (for 2 or 3 (sub)activities)</li>
 739           <li>Not overlapping</li>
 740           <li>Max simultaneous in selected time slots</li>
 741           <li>Min gaps between a set of (sub)activities</li>
 742         </ul></li>
 743     </ul></li>
 744
 745   <li>A large and flexible palette of space constraints:
 746     <ul>
 747       <li>Room not available periods</li>
 748       <li>For teacher(s):
 749         <ul>
 750           <li>Home room(s)</li>
 751           <li>Max building changes per day/week</li>
 752           <li>Min gaps between building changes</li>
 753         </ul>
 754       </li>
 755
 756       <li>For students (sets):
 757         <ul>
 758           <li>Home room(s)</li>
 759           <li>Max building changes per day/week</li>
 760           <li>Min gaps between building changes</li>
 761         </ul>
 762       </li>
 763       <li>Preferred room(s):
 764         <ul>
 765           <li>For a subject</li>
 766           <li>For an activity tag</li>
 767           <li>For a subject and an activity tag</li>
 768           <li>Individually for a (sub)activity</li>
 769         </ul>
 770       </li>
 771
 772       <li>For a set of activities:
 773         <ul>
 774           <li>Occupy a maximum number of different rooms</li>
 775         </ul>
 776       </li>
 777     </ul>
 778   </li>
 779 </ul></p>
 780
 781 <p>I have not used it myself, as I am not involved in time table
 782 planning at a school, but it seem to work fine when I test it.  If you
 783 need to set up your schools time table, and is tired of doing it
 784 manually, check it out.
 785
 786 A quick summary on how to use it can be found in
 787 <a href="http://marvelsoft.co.in/wp/2012/03/generate-timetable-for-state-cbse-icse-igcse-schools-free/">a
 788 blog post from MarvelSoft</a>.  If you find FET useful, please provide
 789 a recipe for the Debian Edu project in the
 790 <a href="http://wiki.debian.org/DebianEdu#Howtos">Debian Edu HowTo
 791 section</a>.</p>
 792
 793       </div>
 794       <div class="tags">
 795
 796
 797         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/nice free software">nice free software</a>.
 798
 799
 800       </div>
 801     </div>
 802     <div class="padding"></div>
 803
 804     <p style="text-align: right;"><a href="nice free software.rss"><img src="http://people.skolelinux.org/pere/blog/xml.gif" alt="RSS Feed" width="36" height="14" /></a></p>
 805     <div id="sidebar">
 806
 807
 808
 809 <h2>Archive</h2>
 810 <ul>
 811
 812 <li>2016
 813 <ul>
 814
 815 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/01/">January (2)</a></li>
 816
 817 </ul></li>
 818
 819 <li>2015
 820 <ul>
 821
 822 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/01/">January (7)</a></li>
 823
 824 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/02/">February (6)</a></li>
 825
 826 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/03/">March (1)</a></li>
 827
 828 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/04/">April (4)</a></li>
 829
 830 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/05/">May (3)</a></li>
 831
 832 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/06/">June (4)</a></li>
 833
 834 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/07/">July (6)</a></li>
 835
 836 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/08/">August (2)</a></li>
 837
 838 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/09/">September (2)</a></li>
 839
 840 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/10/">October (9)</a></li>
 841
 842 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/11/">November (6)</a></li>
 843
 844 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/12/">December (3)</a></li>
 845
 846 </ul></li>
 847
 848 <li>2014
 849 <ul>
 850
 851 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/01/">January (2)</a></li>
 852
 853 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/02/">February (3)</a></li>
 854
 855 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/03/">March (8)</a></li>
 856
 857 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/04/">April (7)</a></li>
 858
 859 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/05/">May (1)</a></li>
 860
 861 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/06/">June (2)</a></li>
 862
 863 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/07/">July (2)</a></li>
 864
 865 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/08/">August (2)</a></li>
 866
 867 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/09/">September (5)</a></li>
 868
 869 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/10/">October (6)</a></li>
 870
 871 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/11/">November (3)</a></li>
 872
 873 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/12/">December (5)</a></li>
 874
 875 </ul></li>
 876
 877 <li>2013
 878 <ul>
 879
 880 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/01/">January (11)</a></li>
 881
 882 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/02/">February (9)</a></li>
 883
 884 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/03/">March (9)</a></li>
 885
 886 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/04/">April (6)</a></li>
 887
 888 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/05/">May (9)</a></li>
 889
 890 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/06/">June (10)</a></li>
 891
 892 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/07/">July (7)</a></li>
 893
 894 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/08/">August (3)</a></li>
 895
 896 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/09/">September (5)</a></li>
 897
 898 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/10/">October (7)</a></li>
 899
 900 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/11/">November (9)</a></li>
 901
 902 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/12/">December (3)</a></li>
 903
 904 </ul></li>
 905
 906 <li>2012
 907 <ul>
 908
 909 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/01/">January (7)</a></li>
 910
 911 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/02/">February (10)</a></li>
 912
 913 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/03/">March (17)</a></li>
 914
 915 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/04/">April (12)</a></li>
 916
 917 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/05/">May (12)</a></li>
 918
 919 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/06/">June (20)</a></li>
 920
 921 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/07/">July (17)</a></li>
 922
 923 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/08/">August (6)</a></li>
 924
 925 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/09/">September (9)</a></li>
 926
 927 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/10/">October (17)</a></li>
 928
 929 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/11/">November (10)</a></li>
 930
 931 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/12/">December (7)</a></li>
 932
 933 </ul></li>
 934
 935 <li>2011
 936 <ul>
 937
 938 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/01/">January (16)</a></li>
 939
 940 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/02/">February (6)</a></li>
 941
 942 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/03/">March (6)</a></li>
 943
 944 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/04/">April (7)</a></li>
 945
 946 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/05/">May (3)</a></li>
 947
 948 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/06/">June (2)</a></li>
 949
 950 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/07/">July (7)</a></li>
 951
 952 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/08/">August (6)</a></li>
 953
 954 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/09/">September (4)</a></li>
 955
 956 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/10/">October (2)</a></li>
 957
 958 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/11/">November (3)</a></li>
 959
 960 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/12/">December (1)</a></li>
 961
 962 </ul></li>
 963
 964 <li>2010
 965 <ul>
 966
 967 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/01/">January (2)</a></li>
 968
 969 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/02/">February (1)</a></li>
 970
 971 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/03/">March (3)</a></li>
 972
 973 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/04/">April (3)</a></li>
 974
 975 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/05/">May (9)</a></li>
 976
 977 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/06/">June (14)</a></li>
 978
 979 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/07/">July (12)</a></li>
 980
 981 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/08/">August (13)</a></li>
 982
 983 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/09/">September (7)</a></li>
 984
 985 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/10/">October (9)</a></li>
 986
 987 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/11/">November (13)</a></li>
 988
 989 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/12/">December (12)</a></li>
 990
 991 </ul></li>
 992
 993 <li>2009
 994 <ul>
 995
 996 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/01/">January (8)</a></li>
 997
 998 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/02/">February (8)</a></li>
 999
1000 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/03/">March (12)</a></li>
1001
1002 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/04/">April (10)</a></li>
1003
1004 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/05/">May (9)</a></li>
1005
1006 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/06/">June (3)</a></li>
1007
1008 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/07/">July (4)</a></li>
1009
1010 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/08/">August (3)</a></li>
1011
1012 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/09/">September (1)</a></li>
1013
1014 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/10/">October (2)</a></li>
1015
1016 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/11/">November (3)</a></li>
1017
1018 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/12/">December (3)</a></li>
1019
1020 </ul></li>
1021
1022 <li>2008
1023 <ul>
1024
1025 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/11/">November (5)</a></li>
1026
1027 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/12/">December (7)</a></li>
1028
1029 </ul></li>
1030
1031 </ul>
1032
1033
1034
1035 <h2>Tags</h2>
1036 <ul>
1037
1038  <li><a href="http://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer (13)</a></li>
1039
1040  <li><a href="http://people.skolelinux.org/pere/blog/tags/amiga">amiga (1)</a></li>
1041
1042  <li><a href="http://people.skolelinux.org/pere/blog/tags/aros">aros (1)</a></li>
1043
1044  <li><a href="http://people.skolelinux.org/pere/blog/tags/bankid">bankid (4)</a></li>
1045
1046  <li><a href="http://people.skolelinux.org/pere/blog/tags/bitcoin">bitcoin (9)</a></li>
1047
1048  <li><a href="http://people.skolelinux.org/pere/blog/tags/bootsystem">bootsystem (15)</a></li>
1049
1050  <li><a href="http://people.skolelinux.org/pere/blog/tags/bsa">bsa (2)</a></li>
1051
1052  <li><a href="http://people.skolelinux.org/pere/blog/tags/chrpath">chrpath (2)</a></li>
1053
1054  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian">debian (117)</a></li>
1055
1056  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (154)</a></li>
1057
1058  <li><a href="http://people.skolelinux.org/pere/blog/tags/digistan">digistan (10)</a></li>
1059
1060  <li><a href="http://people.skolelinux.org/pere/blog/tags/dld">dld (15)</a></li>
1061
1062  <li><a href="http://people.skolelinux.org/pere/blog/tags/docbook">docbook (20)</a></li>
1063
1064  <li><a href="http://people.skolelinux.org/pere/blog/tags/drivstoffpriser">drivstoffpriser (4)</a></li>
1065
1066  <li><a href="http://people.skolelinux.org/pere/blog/tags/english">english (299)</a></li>
1067
1068  <li><a href="http://people.skolelinux.org/pere/blog/tags/fiksgatami">fiksgatami (23)</a></li>
1069
1070  <li><a href="http://people.skolelinux.org/pere/blog/tags/fildeling">fildeling (12)</a></li>
1071
1072  <li><a href="http://people.skolelinux.org/pere/blog/tags/freeculture">freeculture (25)</a></li>
1073
1074  <li><a href="http://people.skolelinux.org/pere/blog/tags/freedombox">freedombox (9)</a></li>
1075
1076  <li><a href="http://people.skolelinux.org/pere/blog/tags/frikanalen">frikanalen (16)</a></li>
1077
1078  <li><a href="http://people.skolelinux.org/pere/blog/tags/h264">h264 (20)</a></li>
1079
1080  <li><a href="http://people.skolelinux.org/pere/blog/tags/intervju">intervju (42)</a></li>
1081
1082  <li><a href="http://people.skolelinux.org/pere/blog/tags/isenkram">isenkram (11)</a></li>
1083
1084  <li><a href="http://people.skolelinux.org/pere/blog/tags/kart">kart (19)</a></li>
1085
1086  <li><a href="http://people.skolelinux.org/pere/blog/tags/ldap">ldap (9)</a></li>
1087
1088  <li><a href="http://people.skolelinux.org/pere/blog/tags/lenker">lenker (8)</a></li>
1089
1090  <li><a href="http://people.skolelinux.org/pere/blog/tags/lsdvd">lsdvd (2)</a></li>
1091
1092  <li><a href="http://people.skolelinux.org/pere/blog/tags/ltsp">ltsp (1)</a></li>
1093
1094  <li><a href="http://people.skolelinux.org/pere/blog/tags/mesh network">mesh network (8)</a></li>
1095
1096  <li><a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (37)</a></li>
1097
1098  <li><a href="http://people.skolelinux.org/pere/blog/tags/nice free software">nice free software (6)</a></li>
1099
1100  <li><a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk (273)</a></li>
1101
1102  <li><a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug (177)</a></li>
1103
1104  <li><a href="http://people.skolelinux.org/pere/blog/tags/offentlig innsyn">offentlig innsyn (22)</a></li>
1105
1106  <li><a href="http://people.skolelinux.org/pere/blog/tags/open311">open311 (2)</a></li>
1107
1108  <li><a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (58)</a></li>
1109
1110  <li><a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern (92)</a></li>
1111
1112  <li><a href="http://people.skolelinux.org/pere/blog/tags/raid">raid (1)</a></li>
1113
1114  <li><a href="http://people.skolelinux.org/pere/blog/tags/reactos">reactos (1)</a></li>
1115
1116  <li><a href="http://people.skolelinux.org/pere/blog/tags/reprap">reprap (11)</a></li>
1117
1118  <li><a href="http://people.skolelinux.org/pere/blog/tags/rfid">rfid (3)</a></li>
1119
1120  <li><a href="http://people.skolelinux.org/pere/blog/tags/robot">robot (9)</a></li>
1121
1122  <li><a href="http://people.skolelinux.org/pere/blog/tags/rss">rss (1)</a></li>
1123
1124  <li><a href="http://people.skolelinux.org/pere/blog/tags/ruter">ruter (4)</a></li>
1125
1126  <li><a href="http://people.skolelinux.org/pere/blog/tags/scraperwiki">scraperwiki (2)</a></li>
1127
1128  <li><a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (45)</a></li>
1129
1130  <li><a href="http://people.skolelinux.org/pere/blog/tags/sitesummary">sitesummary (4)</a></li>
1131
1132  <li><a href="http://people.skolelinux.org/pere/blog/tags/skepsis">skepsis (4)</a></li>
1133
1134  <li><a href="http://people.skolelinux.org/pere/blog/tags/standard">standard (48)</a></li>
1135
1136  <li><a href="http://people.skolelinux.org/pere/blog/tags/stavekontroll">stavekontroll (3)</a></li>
1137
1138  <li><a href="http://people.skolelinux.org/pere/blog/tags/stortinget">stortinget (10)</a></li>
1139
1140  <li><a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance (36)</a></li>
1141
1142  <li><a href="http://people.skolelinux.org/pere/blog/tags/sysadmin">sysadmin (2)</a></li>
1143
1144  <li><a href="http://people.skolelinux.org/pere/blog/tags/usenix">usenix (2)</a></li>
1145
1146  <li><a href="http://people.skolelinux.org/pere/blog/tags/valg">valg (8)</a></li>
1147
1148  <li><a href="http://people.skolelinux.org/pere/blog/tags/video">video (55)</a></li>
1149
1150  <li><a href="http://people.skolelinux.org/pere/blog/tags/vitenskap">vitenskap (4)</a></li>
1151
1152  <li><a href="http://people.skolelinux.org/pere/blog/tags/web">web (38)</a></li>
1153
1154 </ul>
1155
1156
1157     </div>
1158     <p style="text-align: right">
1159  Created by <a href="http://steve.org.uk/Software/chronicle">Chronicle v4.6</a>
1160 </p>
1161
1162   </body>
1163 </html>