GIT repositories

Index page of all the GIT repositories that are clonable form this server via HTTPS. Übersichtsseite aller GIT-Repositories, die von diesem Server aus über git clone (HTTPS) erreichbar sind.


A bunch of service scripts to convert, analyse and generate data. Ein paar Services zum Konvertieren, Analysieren und Generieren von Daten.

GNU octave web interface

A web interface for GNU Octave, which allows to run scientific calculations from netbooks, tables or smartphones. The interface provides a web form generator for Octave script parameters with pre-validation, automatic script list generation, as well presenting of output text, figures and files in a output HTML page. Ein Webinterface für GNU-Octave, mit dem wissenschaftliche Berechnungen von Netbooks, Tablets oder Smartphones aus durchgeführt werden können. Die Schnittstelle beinhaltet einen Formulargenerator für Octave-Scriptparameter, mit Einheiten und Einfabevalidierung. Textausgabe, Abbildungen und generierte Dateien werden abgefangen und in einer HTML-Seite dem Nutzer als Ergebnis zur Verfügung gestellt.

Boot camp with Windows 7 and a SSD

As not all programs are available on MacOS 10.7, you may want to install Windows 7 either on a virtual machine or, to get the whole performance of your machine, on a Boot Camp partition. As described in the last article, I switched to a Vertex 2 SSD, which is much faster then the HDD before, but provides with 240GB only half of the space compared to the replaced hard disk. As a very result, I didn't want to waste space on a second partition that needs already more than 20GB for the operating system (we can forgive Steve Jobs that Lion has a similar disk usage, but for any reason we can't forgive Steve Ballmer). So, 50GB was my choice for the Boot Camp partition, and the Windows 7 space had to be trimmed somehow. The major issue was to prevent that the disk usage grows too much after the installation (due to indexing, backups, shadow images, memory dumps etc). The updates will increase the required space enough anyway. Furthermore, SSDs and convendtional HDDs require different handling, e.g. SSD do not need to be defragmented. Here are the steps that helped me keeping the system clean and speedy. I hope it helps you, too. Note: Every change has its side effects, so checkout if you need a feature or not.

Cleanup and removing the disk shadow copy

A simple way of freeing space is to use the normal disk cleanup. This package also contains the functionality to remove a disk shadow copy.

Disable Hybernation

Hybernation is principally a good thing. However, it has the side effect that a file is created, which contains the RAM state during hybernation. Depending on the RAM size, this preserves gigabytes of disk space (in my case a 1/6 of the disk space!), and the file is not deleted after hybernation. Disabling it is easy (the file will be automatically removed). Side effect: The system can only switch to sleep mode, which still requires battery. If latter is empty Windows would normally hybernate, but can't. So it will either force a shutdown or just go off.

Disabling Indexing service

The indexing service is the Windows-Spotlight background task and uses disk space as well. Side effects: Finding programs and files still works, but more detailled searches, such as words in mails or PDFs does not work.

Trimming page file size

The page file is the virtual memory and similar to the scratch partition. It can grow quite a lot. Side effects: You could run out out of memory. This never happend to me up to now, but if you use Software, which needs huge amount of RAM ... well - could happen that the program crashes or throws an allocation error.

Disable System Restore

The System Restore Points are principally a good Idea, but they need space. Here how to disable this feature. Side effects: You don't have a direct undo operation for your system setup (I use incremental network backups to get around this problem).

Disable Defrag schedule

SSDs don't need to be defragmented, indeed it is a waste of resources and decreases the life time unnecessarily.

Disable MacOS X partition visibility

If you don't want that windows programs can access your Mac partition, you can unassign its drive letter. This is not a "really secure security feature", but it should help a bit, because admin permissions are required to reassign a drive letter.