I've one server (mail.trixing.net) hosted on a DSL line with a static IP address (thanks manitu.net). It has a 1 mbit/s upload capability which is enough for the one or two visitors a day.

mail.trixing.net currently hosts

Public:

• pyblosxom blog/web (l4x.org)
• static web page (trixing.de)
• gallery (l4x.org/pics/)
• Linux Kernel Compile Tests (l4x.org/k), dynamically generated

Private:

• (private) scm repositories (l4x.org/svn/, svn.l4x.org, git.l4x.org)
• vdr tv server (l4x.org/tv/)
• munin service monitor (l4x.org/munin/)
• dsl connection (l4x.org/dsl/), reverse proxy

Hosted on Google Apps

• mail (@trixing.{de,net,org,com,eu}, @l4x.org, @ppp0.net, @jandittmer.de, @familiedittmer.de,

  @turnschuh-admin.de)

• Why external mail hosting you may ask. Some reasons:

  • if the server or link goes down, while I've shared co-located backup-mx, I may lose mail
  • requires time for maintenance
  • spam filtering sucks
  • I used to do it as a hobby while I was on the university but now with child, family and a real job I want to use my spare time more efficiently

• ShowIP, google code, done 2008-02-12, http://code.google.com/p/firefox-showip/

posted at: 21:40 | path: /projects | permanent link to this entry

Jan Dittmer
Rankestrasse 17
38102 Braunschweig
jdi@l4x.org
+49 - 531 - 3884123
+49 - 179 - 4570689
Address history

Current address 2006-07-14 - Rankestrasse 17, 38102 Braunschweig 2005-10-01 - 2006-07-14 Gliesmaroder Strasse 75, 38106 Braunschweig 2004-09-15 - 2005-09-30 Eichholz 19, 20459 Hamburg 2000-10-01 - 2004-09-15 Schuettstrasse 3, 21073 Hamburg 1984-10-01 - 2000-09-30 Carl-Goerdeler-Ring 9, 38518 Gifhorn 1980-01-04 - 1984-09-30 Gartenweg 1a, 3170 Gifhorn

Click on the addresses to reveal their location.

posted at: 21:32 | path: / | permanent link to this entry

While setting up a new subversion (svn) repository for my old blog entries, I wanted to keep the original dates (mtime of the file) in the checkin commit (for use with the pyblosxom svn plugin). After a quick online research I came up with the following script:

#!/bin/sh
# svn-ci-date.sh
# Jan Dittmer <jdi@l4x.org> 2008
# Use at your own risk
#

D=`ls -l "$1" | cut -f6-7 -d' ' | sed 's/ /T/'`
D="${D}:00.000000Z"
echo "Date: $D"
if ! svn add "$1"; then exit 1; fi
if ! svn ci -m "Date $D" "$1"; then exit 2; fi
R=`svn info "$1" | grep "^Revision: " | cut -f2 -d' '`
echo "Revision: $R"
if [ "$R" == "" ]; then exit 3; fi
if ! svn propset --revprop svn:date -r$R "$D"; then exit 4; fi

Please note, that subversion does not do any sanity checking on the svn:date property. If svn log reports a 'Bogus Date' afterwards, make sure your dates have the format 'YYYY-MM-DDThh:mm:ss.uuuuuuZ'.

posted at: 20:49 | path: /unix | permanent link to this entry

The Lenovo X300 has a really annoying fan running with high speeds already at low (40C) CPU temperatures. The lm-sensors package comes with a fancontrol daemon which does user space fan regulation. Just put this in your /etc/fancontrol

INTERVAL=10
FCTEMPS=hwmon0/device/pwm1=hwmon0/device/temp1_input
FCFANS= hwmon0/device/pwm1=hwmon0/device/fan1_input
MINTEMP=hwmon0/device/pwm1=60
MAXTEMP=hwmon0/device/pwm1=70
MINSTART=hwmon0/device/pwm1=32
MINSTOP=hwmon0/device/pwm1=32
MINPWM=hwmon0/device/pwm1=32
MAXPWM=hwmon0/device/pwm1=128

This will give you 1800 rpm for CPU temperatures > 50C and 5500 rpm (the next level) for temperatures higher 70C. As the fan is barely noticeable at 1800 and 70C is only reached by running two processes with 100% CPU load for more then 5 minutes (even at 30C ambient temperature) this will give you a nearly totally silent laptop :-). A pwm value of 255 sounds like a jet starting (8000 rpm)...

posted at: 20:04 | path: /unix | permanent link to this entry

If you encounter the error "A disk read error occured" when trying
to boot Windows XP off a raw disk image using Virtualbox (either directly by using
the write-through support or indirectly by booting a 1:1 copy) most
probably the BIOS of the original system reported an odd drive geometry
(C/H/S - Cylinders/Heads/Sectors).

To fix this boot the _physical_ system,
go to the grub command line, type 'c' to invoke the command prompt and then execute the command 'geometry (hd0)'. Write down the cylinders, heads and
sectors values reported. Back in your host system, open the .vmdk file using a normal text editor, scroll down to the end of the file and adjust the following lines

ddb.geometry.biosCylinders="1023"
ddb.geometry.biosHeads="240"
ddb.geometry.biosSectors="63"

.
(1023/240/63 are the values reported by the Lenovo X300 Notebook BIOS).

Now try to boot Windows in the virtualized environment. In my case it
worked right on the first try. There may also be a Windows tool to get
the original drive geometry.

The short explanation is, that the boot loader from Windows seems to have
hard coded values for the drive geometry <

posted at: 20:35 | path: /unix | permanent link to this entry

Astonishingly a search for 'truncate unix utility' doesn't turn up anything useful
apart from hundreds of references to the ftruncate man page.
This is how I did it:

dd of=destfile bs=1 seek=newsize count=1 </dev/null

where newsize can be 1k, 400G, whatever and destfile is obviously the
destination filename.

posted at: 20:35 | path: /unix | permanent link to this entry

Working config file for the syncml-obex-client plugin. 00:11:22:33:44:55 14 0 PC Suite 1 1 2 1 0 10000 0 Contacts Calendar Notes See also:

posted at: 23:06 | path: /unix | permanent link to this entry

Helpful MacOS Trivia [http://www.macosxhints.com/article.php?story=20070125092851828] As joshewah pointed out, if you have the proper codecs installed in quicktime, and have the video files under movies, the files will be seen and playable under front row without having to create any reference files. Now with this in mind, if you have your video files elsewhere, on an external drive, or network mounts(!!), simply create aliases to any network mounted video folders and put the aliases into the movies folder. As long as the drives or shares are mounted, the aliases (treated by front row gui as folders) will show all the video files on the remote drives! Enjoy!

posted at: 22:42 | path: /macos | permanent link to this entry

In Gnuplot to set different y-axis scaling left and right:

gnuplot> plot sin(x)    axis x1y1, \
              sin(x)**2 axis x1y2

In the Python Gnuplot module you rather use

g.plot(Gnuplot.Data(x,y1,axes='x1y1'),
       Gnuplot.Data(x,y1,axes='x1y2'))

See the little difference?

posted at: 22:42 | path: /unix | permanent link to this entry

Hey, finally people programming intelligent installers. I already thought about simulating a usb disk for wine just to install Navicore or searching a Windows PC. But you just can give the installer a directory as destination and it installs just fine. Just copy the resulting tree to a blank memory card and you're ready. Upon inserting the card, the phone will automatically install the application. Now up to some navigating. Hope it is better than nav4all, which really sucks (nice idea, but bad implementation, just like the Nokia E60 mobile phone but that are other stories). $ wine --version Wine 0.9.15

posted at: 21:28 | path: /unix | permanent link to this entry