- <div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/Spr_kkoder_for_POSIX_locale_i_Norge.html">Språkkoder for POSIX locale i Norge</a></div>
- <div class="date">11th April 2014</div>
- <div class="body"><p>For 12 år siden, skrev jeg et lite notat om
-<a href="http://i18n.skolelinux.no/localekoder.txt">bruk av språkkoder
-i Norge</a>. Jeg ble nettopp minnet på dette da jeg fikk spørsmål om
-notatet fortsatt var aktuelt, og tenkte det var greit å repetere hva
-som fortsatt gjelder. Det jeg skrev da er fortsatt like aktuelt.</p>
-
-<p>Når en velger språk i programmer på unix, så velger en blant mange
-språkkoder. For språk i Norge anbefales følgende språkkoder (anbefalt
-locale i parantes):</p>
-
-<p><dl>
-<dt>nb (nb_NO)</dt><dd>Bokmål i Norge</dd>
-<dt>nn (nn_NO)</dt><dd>Nynorsk i Norge</dd>
-<dt>se (se_NO)</dt><dd>Nordsamisk i Norge</dd>
-</dl></p>
-
-<p>Alle programmer som bruker andre koder bør endres.</p>
-
-<p>Språkkoden bør brukes når .po-filer navngis og installeres. Dette
-er ikke det samme som locale-koden. For Norsk Bokmål, så bør filene
-være navngitt nb.po, mens locale (LANG) bør være nb_NO.</p>
-
-<p>Hvis vi ikke får standardisert de kodene i alle programmene med
-norske oversettelser, så er det umulig å gi LANG-variablen ett innhold
-som fungerer for alle programmer.</p>
-
-<p>Språkkodene er de offisielle kodene fra ISO 639, og bruken av dem i
-forbindelse med POSIX localer er standardisert i RFC 3066 og ISO
-15897. Denne anbefalingen er i tråd med de angitte standardene.</p>
-
-<p>Følgende koder er eller har vært i bruk som locale-verdier for
-"norske" språk. Disse bør unngås, og erstattes når de oppdages:</p>
-
-<p><table>
-<tr><td>norwegian</td><td>-> nb_NO</td></tr>
-<tr><td>bokmål </td><td>-> nb_NO</td></tr>
-<tr><td>bokmal </td><td>-> nb_NO</td></tr>
-<tr><td>nynorsk </td><td>-> nn_NO</td></tr>
-<tr><td>no </td><td>-> nb_NO</td></tr>
-<tr><td>no_NO </td><td>-> nb_NO</td></tr>
-<tr><td>no_NY </td><td>-> nn_NO</td></tr>
-<tr><td>sme_NO </td><td>-> se_NO</td></tr>
-</table></p>
-
-<p>Merk at når det gjelder de samiske språkene, at se_NO i praksis
-henviser til nordsamisk i Norge, mens f.eks. smj_NO henviser til
-lulesamisk. Dette notatet er dog ikke ment å gi råd rundt samiske
-språkkoder, der gjør
-<a href="http://www.divvun.no/">Divvun-prosjektet</a> en bedre
-jobb.</p>
-
-<p><strong>Referanser:</strong></p>
-
-<ul>
-
- <li><a href="http://www.rfc-base.org/rfc-3066.html">RFC 3066 - Tags
- for the Identification of Languages</a> (Erstatter RFC 1766)</li>
-
- <li><a href="http://www.loc.gov/standards/iso639-2/langcodes.html">ISO
- 639</a> - Codes for the Representation of Names of Languages</li>
-
- <li><a href="http://std.dkuug.dk/jtc1/sc22/wg20/docs/n897-14652w25.pdf">ISO
- DTR 14652</a> - locale-standard Specification method for cultural
- conventions</li>
-
- <li><a href="http://std.dkuug.dk/jtc1/sc22/wg20/docs/n610.pdf">ISO
- 15897: Registration procedures for cultural elements (cultural
- registry)</a>,
- <a href="http://std.dkuug.dk/jtc1/sc22/wg20/docs/n849-15897wd6.pdf">(nytt
- draft)</a></li>
-
- <li><a href="http://std.dkuug.dk/jtc1/sc22/wg20/">ISO/IEC
- JTC1/SC22/WG20</a> - Gruppen for i18n-standardisering i ISO</li>
-
-<ul>
-</div>
- <div class="tags">
-
-
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>.
-
-
- </div>
- </div>
- <div class="padding"></div>
-
- <div class="entry">
- <div class="title"><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></div>
- <div class="date"> 9th April 2014</div>
- <div class="body"><p>For a while now, I have been looking for a sensible offsite backup
-solution for use at home. My requirements are simple, it must be
-cheap and locally encrypted (in other words, I keep the encryption
-keys, the storage provider do not have access to my private files).
-One idea me and my friends had many years ago, before the cloud
-storage providers showed up, was to use Google mail as storage,
-writing a Linux block device storing blocks as emails in the mail
-service provided by Google, and thus get heaps of free space. On top
-of this one can add encryption, RAID and volume management to have
-lots of (fairly slow, I admit that) cheap and encrypted storage. But
-I never found time to implement such system. But the last few weeks I
-have looked at a system called
-<a href="https://bitbucket.org/nikratio/s3ql/">S3QL</a>, a locally
-mounted network backed file system with the features I need.</p>
-
-<p>S3QL is a fuse file system with a local cache and cloud storage,
-handling several different storage providers, any with Amazon S3,
-Google Drive or OpenStack API. There are heaps of such storage
-providers. S3QL can also use a local directory as storage, which
-combined with sshfs allow for file storage on any ssh server. S3QL
-include support for encryption, compression, de-duplication, snapshots
-and immutable file systems, allowing me to mount the remote storage as
-a local mount point, look at and use the files as if they were local,
-while the content is stored in the cloud as well. This allow me to
-have a backup that should survive fire. The file system can not be
-shared between several machines at the same time, as only one can
-mount it at the time, but any machine with the encryption key and
-access to the storage service can mount it if it is unmounted.</p>
-
-<p>It is simple to use. I'm using it on Debian Wheezy, where the
-package is included already. So to get started, run <tt>apt-get
-install s3ql</tt>. Next, pick a storage provider. I ended up picking
-Greenqloud, after reading their nice recipe on
-<a href="https://greenqloud.zendesk.com/entries/44611757-How-To-Use-S3QL-to-mount-a-StorageQloud-bucket-on-Debian-Wheezy">how
-to use S3QL with their Amazon S3 service</a>, because I trust the laws
-in Iceland more than those in USA when it come to keeping my personal
-data safe and private, and thus would rather spend money on a company
-in Iceland. Another nice recipe is available from the article
-<a href="http://www.admin-magazine.com/HPC/Articles/HPC-Cloud-Storage">S3QL
-Filesystem for HPC Storage</a> by Jeff Layton in the HPC section of
-Admin magazine. When the provider is picked, figure out how to get
-the API key needed to connect to the storage API. With Greencloud,
-the key did not show up until I had added payment details to my
-account.</p>
-
-<p>Armed with the API access details, it is time to create the file
-system. First, create a new bucket in the cloud. This bucket is the
-file system storage area. I picked a bucket name reflecting the
-machine that was going to store data there, but any name will do.
-I'll refer to it as <tt>bucket-name</tt> below. In addition, one need
-the API login and password, and a locally created password. Store it
-all in ~root/.s3ql/authinfo2 like this:
-
-<p><blockquote><pre>
-[s3c]
-storage-url: s3c://s.greenqloud.com:443/bucket-name
-backend-login: API-login
-backend-password: API-password
-fs-passphrase: local-password
-</pre></blockquote></p>
-
-<p>I create my local passphrase using <tt>pwget 50</tt> or similar,
-but any sensible way to create a fairly random password should do it.
-Armed with these details, it is now time to run mkfs, entering the API
-details and password to create it:</p>
-
-<p><blockquote><pre>
-# mkdir -m 700 /var/lib/s3ql-cache
-# mkfs.s3ql --cachedir /var/lib/s3ql-cache --authfile /root/.s3ql/authinfo2 \
- --ssl s3c://s.greenqloud.com:443/bucket-name
-Enter backend login:
-Enter backend password:
-Before using S3QL, make sure to read the user's guide, especially
-the 'Important Rules to Avoid Loosing Data' section.
-Enter encryption password:
-Confirm encryption password:
-Generating random encryption key...
-Creating metadata tables...
-Dumping metadata...
-..objects..
-..blocks..
-..inodes..
-..inode_blocks..
-..symlink_targets..
-..names..
-..contents..
-..ext_attributes..
-Compressing and uploading metadata...
-Wrote 0.00 MB of compressed metadata.
-# </pre></blockquote></p>
-
-<p>The next step is mounting the file system to make the storage available.
-
-<p><blockquote><pre>
-# mount.s3ql --cachedir /var/lib/s3ql-cache --authfile /root/.s3ql/authinfo2 \
- --ssl --allow-root s3c://s.greenqloud.com:443/bucket-name /s3ql
-Using 4 upload threads.
-Downloading and decompressing metadata...
-Reading metadata...
-..objects..
-..blocks..
-..inodes..
-..inode_blocks..
-..symlink_targets..
-..names..
-..contents..
-..ext_attributes..
-Mounting filesystem...
-# df -h /s3ql
-Filesystem Size Used Avail Use% Mounted on
-s3c://s.greenqloud.com:443/bucket-name 1.0T 0 1.0T 0% /s3ql
-#
-</pre></blockquote></p>
-
-<p>The file system is now ready for use. I use rsync to store my
-backups in it, and as the metadata used by rsync is downloaded at
-mount time, no network traffic (and storage cost) is triggered by
-running rsync. To unmount, one should not use the normal umount
-command, as this will not flush the cache to the cloud storage, but
-instead running the umount.s3ql command like this:
-
-<p><blockquote><pre>
-# umount.s3ql /s3ql
-#
-</pre></blockquote></p>
-
-<p>There is a fsck command available to check the file system and
-correct any problems detected. This can be used if the local server
-crashes while the file system is mounted, to reset the "already
-mounted" flag. This is what it look like when processing a working
-file system:</p>
-
-<p><blockquote><pre>
-# fsck.s3ql --force --ssl s3c://s.greenqloud.com:443/bucket-name
-Using cached metadata.
-File system seems clean, checking anyway.
-Checking DB integrity...
-Creating temporary extra indices...
-Checking lost+found...
-Checking cached objects...
-Checking names (refcounts)...
-Checking contents (names)...
-Checking contents (inodes)...
-Checking contents (parent inodes)...
-Checking objects (reference counts)...
-Checking objects (backend)...
-..processed 5000 objects so far..
-..processed 10000 objects so far..
-..processed 15000 objects so far..
-Checking objects (sizes)...
-Checking blocks (referenced objects)...
-Checking blocks (refcounts)...
-Checking inode-block mapping (blocks)...
-Checking inode-block mapping (inodes)...
-Checking inodes (refcounts)...
-Checking inodes (sizes)...
-Checking extended attributes (names)...
-Checking extended attributes (inodes)...
-Checking symlinks (inodes)...
-Checking directory reachability...
-Checking unix conventions...
-Checking referential integrity...
-Dropping temporary indices...
-Backing up old metadata...
-Dumping metadata...
-..objects..
-..blocks..
-..inodes..
-..inode_blocks..
-..symlink_targets..
-..names..
-..contents..
-..ext_attributes..
-Compressing and uploading metadata...
-Wrote 0.89 MB of compressed metadata.
-#
-</pre></blockquote></p>
-
-<p>Thanks to the cache, working on files that fit in the cache is very
-quick, about the same speed as local file access. Uploading large
-amount of data is to me limited by the bandwidth out of and into my
-house. Uploading 685 MiB with a 100 MiB cache gave me 305 kiB/s,
-which is very close to my upload speed, and downloading the same
-Debian installation ISO gave me 610 kiB/s, close to my download speed.
-Both were measured using <tt>dd</tt>. So for me, the bottleneck is my
-network, not the file system code. I do not know what a good cache
-size would be, but suspect that the cache should e larger than your
-working set.</p>
-
-<p>I mentioned that only one machine can mount the file system at the
-time. If another machine try, it is told that the file system is
-busy:</p>
-
-<p><blockquote><pre>
-# mount.s3ql --cachedir /var/lib/s3ql-cache --authfile /root/.s3ql/authinfo2 \
- --ssl --allow-root s3c://s.greenqloud.com:443/bucket-name /s3ql
-Using 8 upload threads.
-Backend reports that fs is still mounted elsewhere, aborting.
-#
-</pre></blockquote></p>
-
-<p>The file content is uploaded when the cache is full, while the
-metadata is uploaded once every 24 hour by default. To ensure the
-file system content is flushed to the cloud, one can either umount the
-file system, or ask S3QL to flush the cache and metadata using
-s3qlctrl:
-
-<p><blockquote><pre>
-# s3qlctrl upload-meta /s3ql
-# s3qlctrl flushcache /s3ql
-#
-</pre></blockquote></p>
-
-<p>If you are curious about how much space your data uses in the
-cloud, and how much compression and deduplication cut down on the
-storage usage, you can use s3qlstat on the mounted file system to get
-a report:</p>
-
-<p><blockquote><pre>
-# s3qlstat /s3ql
-Directory entries: 9141
-Inodes: 9143
-Data blocks: 8851
-Total data size: 22049.38 MB
-After de-duplication: 21955.46 MB (99.57% of total)
-After compression: 21877.28 MB (99.22% of total, 99.64% of de-duplicated)
-Database size: 2.39 MB (uncompressed)
-(some values do not take into account not-yet-uploaded dirty blocks in cache)
-#
-</pre></blockquote></p>
-
-<p>I mentioned earlier that there are several possible suppliers of
-storage. I did not try to locate them all, but am aware of at least
-<a href="https://www.greenqloud.com/">Greenqloud</a>,
-<a href="http://drive.google.com/">Google Drive</a>,
-<a href="http://aws.amazon.com/s3/">Amazon S3 web serivces</a>,
-<a href="http://www.rackspace.com/">Rackspace</a> and
-<a href="http://crowncloud.net/">Crowncloud</A>. The latter even
-accept payment in Bitcoin. Pick one that suit your need. Some of
-them provide several GiB of free storage, but the prize models are
-quite different and you will have to figure out what suits you
-best.</p>
-
-<p>While researching this blog post, I had a look at research papers
-and posters discussing the S3QL file system. There are several, which
-told me that the file system is getting a critical check by the
-science community and increased my confidence in using it. One nice
-poster is titled
-"<a href="http://www.lanl.gov/orgs/adtsc/publications/science_highlights_2013/docs/pg68_69.pdf">An
-Innovative Parallel Cloud Storage System using OpenStack’s SwiftObject
-Store and Transformative Parallel I/O Approach</a>" by Hsing-Bung
-Chen, Benjamin McClelland, David Sherrill, Alfred Torrez, Parks Fields
-and Pamela Smith. Please have a look.</p>
-
-<p>Given my problems with different file systems earlier, I decided to
-check out the mounted S3QL file system to see if it would be usable as
-a home directory (in other word, that it provided POSIX semantics when
-it come to locking and umask handling etc). Running
-<a href="http://people.skolelinux.org/pere/blog/Testing_if_a_file_system_can_be_used_for_home_directories___.html">my
-test code to check file system semantics</a>, I was happy to discover that
-no error was found. So the file system can be used for home
-directories, if one chooses to do so.</p>
-
-<p>If you do not want a locally file system, and want something that
-work without the Linux fuse file system, I would like to mention the
-<a href="http://www.tarsnap.com/">Tarsnap service</a>, which also
-provide locally encrypted backup using a command line client. It have
-a nicer access control system, where one can split out read and write
-access, allowing some systems to write to the backup and others to
-only read from it.</p>
-
-<p>As usual, if you use Bitcoin and want to show your support of my
-activities, please send Bitcoin donations to my address
-<b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b&label=PetterReinholdtsenBlog">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
-</div>
- <div class="tags">
-
-
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern</a>, <a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet</a>.
-
-
- </div>
- </div>
- <div class="padding"></div>
-
- <div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/EU_domstolen_bekreftet_i_dag_at_datalagringsdirektivet_er_ulovlig.html">EU-domstolen bekreftet i dag at datalagringsdirektivet er ulovlig</a></div>
- <div class="date"> 8th April 2014</div>
- <div class="body"><p>I dag kom endelig avgjørelsen fra EU-domstolen om
-datalagringsdirektivet, som ikke overraskende ble dømt ulovlig og i
-strid med borgernes grunnleggende rettigheter. Hvis du lurer på hva
-datalagringsdirektivet er for noe, så er det
-<a href="http://tv.nrk.no/program/koid75005313/tema-dine-digitale-spor-datalagringsdirektivet">en
-flott dokumentar tilgjengelig hos NRK</a> som jeg tidligere
-<a href="http://people.skolelinux.org/pere/blog/Dokumentaren_om_Datalagringsdirektivet_sendes_endelig_p__NRK.html">har
-anbefalt</a> alle å se.</p>
-
-<p>Her er et liten knippe nyhetsoppslag om saken, og jeg regner med at
-det kommer flere ut over dagen. Flere kan finnes
-<a href="http://www.mylder.no/?drill=datalagringsdirektivet&intern=1">via
-mylder</a>.</p>
-
-<p><ul>
-
-<li><a href="http://e24.no/digital/eu-domstolen-datalagringsdirektivet-er-ugyldig/22879592">EU-domstolen:
-Datalagringsdirektivet er ugyldig</a> - e24.no 2014-04-08
-
-<li><a href="http://www.aftenposten.no/nyheter/iriks/EU-domstolen-Datalagringsdirektivet-er-ulovlig-7529032.html">EU-domstolen:
-Datalagringsdirektivet er ulovlig</a> - aftenposten.no 2014-04-08
-
-<li><a href="http://www.aftenposten.no/nyheter/iriks/politikk/Krever-DLD-stopp-i-Norge-7530086.html">Krever
-DLD-stopp i Norge</a> - aftenposten.no 2014-04-08
-
-<li><a href="http://www.p4.no/story.aspx?id=566431">Apenes: - En
-gledens dag</a> - p4.no 2014-04-08
-
-<li><a href="http://www.nrk.no/norge/_-datalagringsdirektivet-er-ugyldig-1.11655929">EU-domstolen:
-– Datalagringsdirektivet er ugyldig</a> - nrk.no 2014-04-08</li>
-
-<li><a href="http://www.vg.no/nyheter/utenriks/data-og-nett/eu-domstolen-datalagringsdirektivet-er-ugyldig/a/10130280/">EU-domstolen:
-Datalagringsdirektivet er ugyldig</a> - vg.no 2014-04-08</li>
-
-<li><a href="http://www.dagbladet.no/2014/04/08/nyheter/innenriks/datalagringsdirektivet/personvern/32711646/">-
-Vi bør skrote hele datalagringsdirektivet</a> - dagbladet.no
-2014-04-08</li>
-
-<li><a href="http://www.digi.no/928137/eu-domstolen-dld-er-ugyldig">EU-domstolen:
-DLD er ugyldig</a> - digi.no 2014-04-08</li>
-
-<li><a href="http://www.irishtimes.com/business/sectors/technology/european-court-declares-data-retention-directive-invalid-1.1754150">European
-court declares data retention directive invalid</a> - irishtimes.com
-2014-04-08</li>
-
-<li><a href="http://www.reuters.com/article/2014/04/08/us-eu-data-ruling-idUSBREA370F020140408?feedType=RSS">EU
-court rules against requirement to keep data of telecom users</a> -
-reuters.com 2014-04-08</li>
-
-</ul>
-</p>
-
-<p>Jeg synes det er veldig fint at nok en stemme slår fast at
-totalitær overvåkning av befolkningen er uakseptabelt, men det er
-fortsatt like viktig å beskytte privatsfæren som før, da de
-teknologiske mulighetene fortsatt finnes og utnyttes, og jeg tror
-innsats i prosjekter som
-<a href="https://wiki.debian.org/FreedomBox">Freedombox</a> og
-<a href="http://www.dugnadsnett.no/">Dugnadsnett</a> er viktigere enn
-noen gang.</p>
-
-<p><strong>Update 2014-04-08 12:10</strong>: Kronerullingen for å
-stoppe datalagringsdirektivet i Norge gjøres hos foreningen
-<a href="http://www.digitaltpersonvern.no/">Digitalt Personvern</a>,
-som har samlet inn 843 215,- så langt men trenger nok mye mer hvis
-
-ikke Høyre og Arbeiderpartiet bytter mening i saken. Det var
-<a href="http://www.holderdeord.no/parliament-issues/48650">kun
-partinene Høyre og Arbeiderpartiet</a> som stemte for
-Datalagringsdirektivet, og en av dem må bytte mening for at det skal
-bli flertall mot i Stortinget. Se mer om saken
-<a href="http://www.holderdeord.no/issues/69-innfore-datalagringsdirektivet">Holder
-de ord</a>.</p>
-</div>
- <div class="tags">
-
-
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/dld">dld</a>, <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>, <a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern</a>, <a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet</a>, <a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance</a>.
-
-
- </div>
- </div>
- <div class="padding"></div>
-
- <div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/ReactOS_Windows_clone___nice_free_software.html">ReactOS Windows clone - nice free software</a></div>
- <div class="date"> 1st April 2014</div>
- <div class="body"><p>Microsoft have announced that Windows XP reaches its end of life
-2014-04-08, in 7 days. But there are heaps of machines still running
-Windows XP, and depending on Windows XP to run their applications, and
-upgrading will be expensive, both when it comes to money and when it
-comes to the amount of effort needed to migrate from Windows XP to a
-new operating system. Some obvious options (buy new a Windows
-machine, buy a MacOSX machine, install Linux on the existing machine)
-are already well known and covered elsewhere. Most of them involve
-leaving the user applications installed on Windows XP behind and
-trying out replacements or updated versions. In this blog post I want
-to mention one strange bird that allow people to keep the hardware and
-the existing Windows XP applications and run them on a free software
-operating system that is Windows XP compatible.</p>
-
-<p><a href="http://www.reactos.org/">ReactOS</a> is a free software
-operating system (GNU GPL licensed) working on providing a operating
-system that is binary compatible with Windows, able to run windows
-programs directly and to use Windows drivers for hardware directly.
-The project goal is for Windows user to keep their existing machines,
-drivers and software, and gain the advantages from user a operating
-system without usage limitations caused by non-free licensing. It is
-a Windows clone running directly on the hardware, so quite different
-from the approach taken by <a href="http://www.winehq.org/">the Wine
-project</a>, which make it possible to run Windows binaries on
-Linux.</p>
-
-<p>The ReactOS project share code with the Wine project, so most
-shared libraries available on Windows are already implemented already.
-There is also a software manager like the one we are used to on Linux,
-allowing the user to install free software applications with a simple
-click directly from the Internet. Check out the
-<a href="http://www.reactos.org/screenshots">screen shots on the
-project web site</a> for an idea what it look like (it looks just like
-Windows before metro).</p>
-
-<p>I do not use ReactOS myself, preferring Linux and Unix like
-operating systems. I've tested it, and it work fine in a virt-manager
-virtual machine. The browser, minesweeper, notepad etc is working
-fine as far as I can tell. Unfortunately, my main test application
-is the software included on a CD with the Lego Mindstorms NXT, which
-seem to install just fine from CD but fail to leave any binaries on
-the disk after the installation. So no luck with that test software.
-No idea why, but hope someone else figure out and fix the problem.
-I've tried the ReactOS Live ISO on a physical machine, and it seemed
-to work just fine. If you like Windows and want to keep running your
-old Windows binaries, check it out by
-<a href="http://www.reactos.org/download">downloading</a> the
-installation CD, the live CD or the preinstalled virtual machine
-image.</p>
-</div>
- <div class="tags">
-
-
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/reactos">reactos</a>.
-
-
- </div>
- </div>
- <div class="padding"></div>
-
- <div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Roger_Marsal.html">Debian Edu interview: Roger Marsal</a></div>
- <div class="date">30th March 2014</div>
- <div class="body"><p><a href="http://www.skolelinux.org/">Debian Edu / Skolelinux</a>
-keep gaining new users. Some weeks ago, a person showed up on IRC,
-<a href="irc://irc.debian.org/#debian-edu">#debian-edu</a>, with a
-wish to contribute, and I managed to get a interview with this great
-contributor Roger Marsal to learn more about his background.</p>
-
-<p><strong>Who are you, and how do you spend your days?</strong></p>
-
-<p>My name is Roger Marsal, I'm 27 years old (1986 generation) and I
-live in Barcelona, Spain. I've got a strong business background and I
-work as a patrimony manager and as a real estate agent. Additionally,
-I've co-founded a British based tech company that is nowadays on the
-last development phase of a new social networking concept.</p>
-
-<p>I'm a Linux enthusiast that started its journey with Ubuntu four years
-ago and have recently switched to Debian seeking rock solid stability
-and as a necessary step to gain expertise.</p>
-
-<p>In a nutshell, I spend my days working and learning as much as I
-can to face both my job, entrepreneur project and feed my Linux
-hunger.</p>
-
-<p><strong>How did you get in contact with the Skolelinux / Debian Edu
-project?</strong></p>
-
-<p>I discovered the <a href="http://www.ltsp.org/">LTSP</a> advantages
-with "Ubuntu 12.04 alternate install" and after a year of use I
-started looking for an alternative. Even though I highly value and
-respect the Ubuntu project, I thought it was necessary for me to
-change to a more robust and stable alternative. As far as I was using
-Debian on my personal laptop I thought it would be fine to install
-Debian and configure an LTSP server myself. Surprised, I discovered
-that the Debian project also supported a kind of Edubuntu equivalent,
-and after having some pain I obtained a Debian Edu network up and
-running. I just loved it.</p>
-
-<p><strong>What do you see as the advantages of Skolelinux / Debian
-Edu?</strong></p>
-
-<p>I found a main advantage in that, once you know "the tips and
-tricks", a new installation just works out of the box. It's the most
-complete alternative I've found to create an LTSP network. All the
-other distributions seems to be made of plastic, Debian Edu seems to
-be made of steel.</p>
-
-<p><strong>What do you see as the disadvantages of Skolelinux / Debian
-Edu?</strong></p>
-
-<p>I found two main disadvantages.</p>
-
-<p>I'm not an expert but I've got notions and I had to spent a considerable
-amount of time trying to bring up a standard network topology. I'm quite
-stubborn and I just worked until I did but I'm sure many people with few
-resources (not big schools, but academies for example) would have switched
-or dropped.</p>
-
-<p>It's amazing how such a complex system like Debian Edu has achieved
-this out-of-the-box state. Even though tweaking without breaking gets
-more difficult, as more factors have to be considered. This can
-discourage many people too.</p>
-
-<p><strong>Which free software do you use daily?</strong></p>
-
-<p>I use Debian, Firefox, Okular, Inkscape, LibreOffice and
-Virtualbox.</p>
-
-
-<p><strong>Which strategy do you believe is the right one to use to
-get schools to use free software?</strong></p>
-
-<p>I don't think there is a need for a particular strategy. The free
-attribute in both "freedom" and "no price" meanings is what will
-really bring free software to schools. In my experience I can think of
-the <a href="http://www.r-project.org/">"R" statistical language</a>; a
-few years a ago was an extremely nerd tool for university people.
-Today it's being increasingly used to teach statistics at many
-different level of studies. I believe free and open software will
-increasingly gain popularity, but I'm sure schools will be one of the
-first scenarios where this will happen.</p>
-</div>
- <div class="tags">
-
-
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/intervju">intervju</a>.
-
-
- </div>
- </div>
- <div class="padding"></div>
-
- <div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/Dokumentaren_om_Datalagringsdirektivet_sendes_endelig_p__NRK.html">Dokumentaren om Datalagringsdirektivet sendes endelig på NRK</a></div>
- <div class="date">26th March 2014</div>
- <div class="body"><p><a href="http://www.nuug.no/">Foreningen NUUG</a> melder i natt at
-NRK nå har bestemt seg for
-<a href="http://www.nuug.no/news/NRK_viser_filmen_om_Datalagringsdirektivet_f_rste_gang_2014_03_31.shtml">når
-den norske dokumentarfilmen om datalagringsdirektivet skal
-sendes</a> (se <a href="http://www.imdb.com/title/tt2832844/">IMDB</a>
-for detaljer om filmen) . Første visning blir på NRK2 mandag
-2014-03-31 kl. 19:50, og deretter visninger onsdag 2014-04-02
-kl. 12:30, fredag 2014-04-04 kl. 19:40 og søndag 2014-04-06 kl. 15:10.
-Jeg har sett dokumentaren, og jeg anbefaler enhver å se den selv. Som
-oppvarming mens vi venter anbefaler jeg Bjørn Stærks kronikk i
-Aftenposten fra i går,
-<a href="http://www.aftenposten.no/meninger/kronikker/Autoritar-gjokunge-7514915.html">Autoritær
-gjøkunge</a>, der han gir en grei skisse av hvor ille det står til med
-retten til privatliv og beskyttelsen av demokrati i Norge og resten
-verden, og helt riktig slår fast at det er vi i databransjen som
-sitter med nøkkelen til å gjøre noe med dette. Jeg har involvert meg
-i prosjektene <a href="http://www.dugnadsnett.no/">dugnadsnett.no</a>
-og <a href="https://wiki.debian.org/FreedomBox">FreedomBox</a> for å
-forsøke å gjøre litt selv for å bedre situasjonen, men det er mye
-hardt arbeid fra mange flere enn meg som gjenstår før vi kan sies å ha
-gjenopprettet balansen.</p>
-
-<p>Jeg regner med at nettutgaven dukker opp på
-<a href="http://tv.nrk.no/program/koid75005313/tema-dine-digitale-spor-datalagringsdirektivet">NRKs
-side om filmen om datalagringsdirektivet</a> om fem dager. Hold et
-øye med siden, og tips venner og slekt om at de også bør se den.</p>
-</div>
- <div class="tags">
-
-
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/dld">dld</a>, <a href="http://people.skolelinux.org/pere/blog/tags/freedombox">freedombox</a>, <a href="http://people.skolelinux.org/pere/blog/tags/mesh network">mesh network</a>, <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>, <a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern</a>, <a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet</a>, <a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance</a>.
-
-
- </div>
- </div>
- <div class="padding"></div>
-
- <div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/Public_Trusted_Timestamping_services_for_everyone.html">Public Trusted Timestamping services for everyone</a></div>
- <div class="date">25th March 2014</div>
- <div class="body"><p>Did you ever need to store logs or other files in a way that would
-allow it to be used as evidence in court, and needed a way to
-demonstrate without reasonable doubt that the file had not been
-changed since it was created? Or, did you ever need to document that
-a given document was received at some point in time, like some
-archived document or the answer to an exam, and not changed after it
-was received? The problem in these settings is to remove the need to
-trust yourself and your computers, while still being able to prove
-that a file is the same as it was at some given time in the past.</p>
-
-<p>A solution to these problems is to have a trusted third party
-"stamp" the document and verify that at some given time the document
-looked a given way. Such
-<a href="https://en.wikipedia.org/wiki/Notarius">notarius</a> service
-have been around for thousands of years, and its digital equivalent is
-called a
-<a href="http://en.wikipedia.org/wiki/Trusted_timestamping">trusted
-timestamping service</a>. <a href="http://www.ietf.org/">The Internet
-Engineering Task Force</a> standardised how such service could work a
-few years ago as <a href="http://tools.ietf.org/html/rfc3161">RFC
-3161</a>. The mechanism is simple. Create a hash of the file in
-question, send it to a trusted third party which add a time stamp to
-the hash and sign the result with its private key, and send back the
-signed hash + timestamp. Both email, FTP and HTTP can be used to
-request such signature, depending on what is provided by the service
-used. Anyone with the document and the signature can then verify that
-the document matches the signature by creating their own hash and
-checking the signature using the trusted third party public key.
-There are several commercial services around providing such
-timestamping. A quick search for
-"<a href="https://duckduckgo.com/?q=rfc+3161+service">rfc 3161
-service</a>" pointed me to at least
-<a href="https://www.digistamp.com/technical/how-a-digital-time-stamp-works/">DigiStamp</a>,
-<a href="http://www.quovadisglobal.co.uk/CertificateServices/SigningServices/TimeStamp.aspx">Quo
-Vadis</a>,
-<a href="https://www.globalsign.com/timestamp-service/">Global Sign</a>
-and <a href="http://www.globaltrustfinder.com/TSADefault.aspx">Global
-Trust Finder</a>. The system work as long as the private key of the
-trusted third party is not compromised.</p>
-
-<p>But as far as I can tell, there are very few public trusted
-timestamp services available for everyone. I've been looking for one
-for a while now. But yesterday I found one over at
-<a href="https://www.pki.dfn.de/zeitstempeldienst/">Deutches
-Forschungsnetz</a> mentioned in
-<a href="http://www.d-mueller.de/blog/dealing-with-trusted-timestamps-in-php-rfc-3161/">a
-blog by David Müller</a>. I then found
-<a href="http://www.rz.uni-greifswald.de/support/dfn-pki-zertifikate/zeitstempeldienst.html">a
-good recipe on how to use the service</a> over at the University of
-Greifswald.</p>
-
-<p><a href="http://www.openssl.org/">The OpenSSL library</a> contain
-both server and tools to use and set up your own signing service. See
-the ts(1SSL), tsget(1SSL) manual pages for more details. The
-following shell script demonstrate how to extract a signed timestamp
-for any file on the disk in a Debian environment:</p>
-
-<p><blockquote><pre>
-#!/bin/sh
-set -e
-url="http://zeitstempel.dfn.de"
-caurl="https://pki.pca.dfn.de/global-services-ca/pub/cacert/chain.txt"
-reqfile=$(mktemp -t tmp.XXXXXXXXXX.tsq)
-resfile=$(mktemp -t tmp.XXXXXXXXXX.tsr)
-cafile=chain.txt
-if [ ! -f $cafile ] ; then
- wget -O $cafile "$caurl"
-fi
-openssl ts -query -data "$1" -cert | tee "$reqfile" \
- | /usr/lib/ssl/misc/tsget -h "$url" -o "$resfile"
-openssl ts -reply -in "$resfile" -text 1>&2
-openssl ts -verify -data "$1" -in "$resfile" -CAfile "$cafile" 1>&2
-base64 < "$resfile"
-rm "$reqfile" "$resfile"
-</pre></blockquote></p>
-
-<p>The argument to the script is the file to timestamp, and the output
-is a base64 encoded version of the signature to STDOUT and details
-about the signature to STDERR. Note that due to
-<a href="http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=742553">a bug
-in the tsget script</a>, you might need to modify the included script
-and remove the last line. Or just write your own HTTP uploader using
-curl. :) Now you too can prove and verify that files have not been
-changed.</p>
-
-<p>But the Internet need more public trusted timestamp services.
-Perhaps something for <a href="http://www.uninett.no/">Uninett</a> or
-my work place the <a href="http://www.uio.no/">University of Oslo</a>
-to set up?</p>
-</div>
- <div class="tags">
-
-
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet</a>.
-
-
- </div>
- </div>
- <div class="padding"></div>
-
projects / homepage.git / blobdiff