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The Raspberry is a nice cheap platform that can be used for many different purpo ...

Devices from AVM are very popular in Germany. Several ISPs are happy to sell you a Fitz!Box device to connect your home to their network. The FRITZ!Box is a Linux-based device, that allows for easy configuration through its Web interface. It runs a DHCP server that will automatically assign IP addresses to newly connected devices. If yo ...

My old blog was hosted on blogspot. When I decided to host this blog myself and to move to the Ghost platform, I had the need to move the old content from blogger to Ghost. Google, who owns Blogger, provides tools to export your data from the platform. Information on how to export the data can be found here. Ghost provides an interface ...

Starting from today, my blog moved from http://const-cast.blogspot.com to this new location. The blog now runs on my own infrastructure and is powered by the ghost blogging software. Google allows to export your old data from the blogger platform, and I’ll import the old posts in the following days.

Today was update-time for my FreeBSD machines. editors/vim required some changes to the options. However, “make config” did not open the usual config dialog. The config dialog requires ports-mgmt/dialog4ports to be installed. While the port was installed on my machine, it also was due to be updated. The stale version of dialog4ports pro ...

Some time ago, our group at TUM created a web frontend that allows users to visualize network flow data. It’s based on Javascript and employs the D3Js library, which allows for dynamic rendering of arbitrary data. We used it to create some visualizations like this one: If you’re interested in how the system works, then have a look at ...

Just for backup purposes as I need this tftp server only on-demand: Setup InstructionsNOTE: By default, tftp-hpa listens to the tftp port specified in /etc/services (port 69)on all local addresses. To run tftpd manually for download only access, use this command: sudo tftpd -L -s To run tftpd manually and support tftp uploads, add ...

First, check whether you already have cpu frequency scaling enabled by running cpufreq-info: ` cpufreq-infocpufrequtils 004: cpufreq-info (C) Dominik Brodowski 2004-2006Report errors and bugs to cpufreq@lists.linux.org.uk, please.analyzing CPU 0:driver: acpi-cpufreqCPUs which need to switch frequency at the same time: 0hardware limi ...

The XCode Cocoa Application Tutorial states that one has to create a controller class (ConverterController in this tutorial). This controller needs to be included into the Interface Builder (IB) by “Open->Read Class File”. If this is done, there will be an error in the MainMenu XIB/NIB-Window that says: “1 source file parsed, no clas ...

Create a new window with emacs: C-x 4 b Close the window: C-x 4 0 New frames can be created with C-x 5 b …