Hacking

OpenSolaris supports virtual networks using virtual interfaces connected with virtual switches. This feature was introduced with Project Crossbow in OpenSolaris 2009.06. To visualize the internal network(s), I created a perl script which takes the output of dladm show-link and generates a dot-File, which then can be rendered using Graphviz. Update: The dladm2dot.pl script now also shows the non-global zones of the interfaces.

Change Mac Audio Volume from Command Line

To change the audio volume from remote of my Mac at home, I needed a command line tool which I can use via ssh. I've found it here: OS X Daily - Change the system volume from the command line. It's as easy as

You can enter numbers from 0 (mute) to 10 (maximum).

Play Audio File