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My User options file for SciTE

Posted March 5th @ 10:30 by Werner

SciTE is a great text editor – in fact I tested a lot of text editors on Linux, Windows and Mac OS X, but always come back to SciTE since it is comfortable but still fast and small. Everytime I install SciTE on a machine I change the settings so that they fit my need. [...]

Install Debian Etch as guest in Virtualbox

Posted March 4th @ 8:43 by Werner

In order to prepare Linux executables for distribution, it’s a good idea to compile the executable in an old Linux distribution. Thus it depends only on “old” versions of libraries and the executable should work on most distributions out there (which provide newer but backward compatible libraries). E.g. Dialogblocks, a RAD for wxWidgets, is built [...]

Install Gnuplot 4.4.0 (RC1) on Ubuntu Linux

Posted March 3rd @ 5:02 by Werner

The most frequented blog entries here are about installing Gnuplot on Ubuntu Linux or Mac OS X. These entries are still valid for the newer Ubuntu versions. But Gnuplot newest version 4.4.0 is close to be released soon, and in this release there are cairo based pdf and png terminals provided. So you don’t need [...]

Create a movie file from single image files (png, jpegs)

Posted April 28th @ 12:49 by Werner

In research sometimes you want to make a movie from single images, like plots from experimental data or from calculation to visualize changes or so on. In order to achieve this you can use ffmpeg. First you have to create the images and save them, where the images need to have a continuous number in [...]

Changing the php file upload limit in Ubuntu Linux

Posted April 14th @ 2:46 by Werner

If you have your own Ubuntu server running you may encounter the maximal file size upload limit in php scripts which is set to 2Mb as default. In order to change that we first have a look what the size actually is. In /var/www (standard www directory) create a file called info.php with the following [...]

Mounting directory from Mac OS X host in Ubuntu Gutsy Gibbon guest in VirtualBox

Posted February 29th @ 3:30 by Werner

There is a new beta version of VirtualBox for Mac OS X available and installing Ubuntu Gutsy Gibbon worked like a charm (in opposition to Parallels). The only problem I encountered was, that it was not possible to mount a directory from the Mac OS X host in the guest system with either the internal [...]

Install gnuplot on Ubuntu Gutsy Gibbon

Posted January 23rd @ 4:50 by Werner

I again have updated these instructions for Gnuplot 4.4.0 RC1 and newer Ubuntu versions. Find them in this post.
Some months ago I wrote a small Howto about installing Gnuplot on Ubuntu Feisty Fawn with readline, pdf and wxWidgets terminal support. It turned out, that this howto was of interest for many people, since this blog [...]

Speed up SSH X11 forwarding

Posted June 1st @ 9:50 by Werner

I use an Ubuntu server as a work-horse for my calculations and connect from my desktop-pc with ssh to the server. For some applications (gnuplot =) this is really slow altough it’s over LAN. I found on the internet some instructions to improve this situation: instead of the AES cipher the arcfour and blowfish ciphers [...]

Same swap partition mounted twice (Ubuntu Feisty)

Posted May 31st @ 12:32 by Werner

Yesterday I wrote that my swap partition suddenly vanished, only to find out that suddenly my swap partition was mounted twice. “top” showed twice the amount of swap space available and “cat /proc/swaps” listed two entries to the same swap partition (/dev/sda6 and /dev/mapper/sda6). This seems to be a bug in Ubuntu Feisty and the [...]

Suddenly my swap drive was missing

Posted May 30th @ 3:54 by Werner

When checking ‘top’ after I was told that I have no memory anymore I found out that I had no swap drive anymore. Must have gone lost when I switched to Ubuntu Feisty. Anyway, I found a description to re-initiate the swap drive:

First find out which partition your swap drive is, e.g. with ’sudo fdisk [...]

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