René’s old blog

  • Saltholm, Seals and Sea Lanes

    Saltholm, Seals and Sea Lanes

    A few weeks ago we got our Reed Paddle Suits, and we had to try them immediately. The weather was nice and calm – there wasn’t a wind blowing and wave height were to be measured in centimeters – so we decided to skip over the island of Saltholm a few kilometres off the coast…

  • Blog moved to WordPress

    Blog moved to WordPress

    I finally got my act together at moved this blog to WordPress. There’s still a few lose ends, some uploaded pictures are missing and will have to be added by hand, and the top graphic needs replacing. It’ll probably make a mess of those places using the feeds from here. Sorry about that.

  • More Kayak Photos

    I have picked some of the better photos from the excursions we’ve made, and uploaded them to Flickr. There’s a least a few worth looking at 🙂

  • Finally Kayak Owner

    Finally Kayak Owner

    We started paddling mid August, and have since been kayaking two or three times a week, and we’ve logged almost 200 km each in less than three months. Rental kayak costs are mounting and the economy starting pointing towards buying our own kayaks and gear. Fortunately, we have had very good possibilities to try various…

  • Suction Cup Camera Mounts

    Suction Cup Camera Mounts

    It can be a bit difficult shooting pictures when you’re sitting in your kayak, especially if there’s a bit of action around you, and it can be impractical having the camera dangling around your wrist when paddling or manoeuvring. Fortunately, there are other ways to attach a camera on a kayak. I have found some…

  • Waterproff cameras

    Waterproff cameras

    If you want to take photos from your kayak, you’ll want a waterproof camera that’s easy to operate. I certainly wouldn’t recommend taking you expensive SLR 🙂 I have search a bit on the net, and apparently there are only two producers of simple waterproof digital cameras: Pentax and Olympus. Pentax Optio W10 A 6…

  • Merry Christmas

    I hope you’ll find a lot of Nokia 770s under the trees 🙂

  • Useful guide to everything DNS and Bind

    There’s a very useful guide to bind and DNS at

  • Emacs wiki

    I just stumbled upon, which looks like a very nice place. I found a newer version of longlines.el, for example.

  • Converting AAC audio files to mp3

    This command will convert an AAC audio file to an mp3 audio file: ffmpeg -i input.m4a -acodec mp3 -ac 2 -ab 128 output.mp3 Batch conversion can be done with for i in *.m4a; do ffmpeg -i “$i” -acodec mp3 -ac 2 -ab 128 “${i%m4a}mp3”; done Sometimes it really is simple 🙂

  • Longest Common Prefix in perl

    I can’t help finding this slightly elegant. Unfortunately I no longer remember where the idea came from. #!/usr/bin/perl use strict; use warnings; sub longest_common_prefix { my $prefix = shift; for (@_) { chop $prefix while (! /^$prefix/); } return $prefix; } print longest_common_prefix(@ARGV), ” “;

  • Xterm and the clipboard

    It has long been an annoyance that xterm doesn’t follow the same rules with regard to the clipboard as most GTK/Gnome applications. Xterm by default only uses the PRIMARY selection for copy and paste, and follows the implicit selection model where the selection is set immediately when text is selected with the mouse, without any…

  • With GNU Emacs you can always learn

    It is close to twenty years that I have been using GNU Emacs almost daily, and you still figure out new stuff. I’ve been somewhat annoyed that copying and pasting between Emacs and Gnome applications were so inconsistent, and then its all in the manual: Using the Clipboard As well as the primary and secondary…

  • irctail – track a file on an irc channel

    Irctail is a small program I wrote to keep track of log files on various servers through an IRC channel. It will track stdin or a given file (like tail -f), and send the lines to an IRC channel. There are options to specify irc server, channel, nick and some more. An example: irctail -c…

  • Labels on ext2 and ext3 filesystems

    I just recently discovered that you can put a label on an ext2 or an ext3 filesystem, just like you can with a msdos/fat filesystem. The reason I didn’t know was probably that it didn’t matter, but now with hal and gnome-volume-manager automounting removable disks, the disks in my usb enclosures are mounted as /media/usbdisk,…

  • D-Link DI-704P router

    I recently bought a D-Link DI-704P router with the intent of using it as a first line of defense in front of a Linux server I have on a public IP. The basic stuff is working as expected, mostly “virtual servers” or “port forwarding” which is used to allow access to the select services I…

  • Vmware and tmpfs

    With the installation of udev a tmpfs file system is mounted on top of /dev at boot. Device nodes are created automatically by udev as the devices appear, but in the case of vmware it doesn’t work. Vmware needs some device nodes that are created when vmware is configured, so they aren’t there when /dev…

  • Resampling audio data

    I’ve never done much with audio data, so when I had to write some audio files to cd, and they weren’t sampled at the right rate, I had a problem. Fortunately, I found sox: sox input.wav -r 44100 output.wav resample did the job. And I tought it was going to be difficult 🙂