Persson, Jack-Benny: - Jack-Benny Persson is a consultant and author based in Sweden. He has written several books about Linux and programming. His passion for Linux and other Unix-like systems started as a hobby more than 20 years ago. Since then, he has spent most of his spare time reading about Linux, tinkering with Linux servers, and writing about Linux administration. Today he has his own IT and media company in Sweden that focuses on Linux. Jack-Benny holds an Advanced Higher Vocational Education Diploma as a Linux system specialist. He has also studied electronics, networking, and security.