i3 is a tiling window manager for advanced Linux users. This note introduces some handy extensions to i3:

• a file-manager extension with a proper workflow,
• an exit-mode extension and
• a pass-through-mode extension.

This article compares the SSH-cluster-tools parallel-ssh, clusterssh and clustershell. SSH-cluster-tools are handy to execute shell-commands on a group of computers in parallel.

This project is discontinued. Please use tp-note instead. The code of tp-note is more generic, works with all markup languages (including Markdown).

Markup languages like Asciidoc are perfectly suited for quick note taking. Type your notes with your favourite editor, view and browse them with Chromium, Chrome or Firefox.

Real-time embedded systems have to meet a combination of requirements that are in deep tension: they are expected to deliver timely results, observing strict deadlines, all using only very limited resources, computing power and energy. To this day, the most common programming language in this environment is C/C++ because of its zero-cost abstractions and fine control over memory layout. With the upcoming communication ability through network interfaces, an additional requirement gained in importance: security.

This note first analysis the preconditions for a successful regulation policy on new information technologies. We explain how the new crime economy, based on anonymous division of labour, works. By going back in history we understand that controlling the money flow is the key to mitigate organized crime. Applied to our generation the author argues, that the most efficient way to fight against this new age of crime economy is to eradicate Bitcoin by prohibiting mining.