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I have a master degree in Computer Science from the University of Karlsruhe and I am a member of the FFI (Friends of the Faculty of Computer Science).
Although my work (still) partly consists of Windows programming, I have completely banned it at home where I use Linux almost exclusively since spring 1993.
I'm especially interested in system and network management, and Linux in production and high availability environments. Therefore I run my own Linux powered private network at home.