Dennis Matotek is Senior Development Operations Engineer at Envato, an online digital marketplace where a community of creatives can help bring ideas to life. He helps a small team of engineers deploy code, build infrastructure, and monitor performance to varying different systems; mostly written in Rails. He mostly works with AWS rather than bare metal and appreciates not having to ... Read morechange failed disks. He lives in Melbourne, Australia with his partner and two children. James Turnbull manages the Computer Emergency Response Team (CERT) at the National Australia Bank. He is also a member of Linux Australia, which included sitting on the Executive Council in 2008, and on the committee of Linux Users of Victoria. He is a contributor to a number of open source projects and regularly speaks on topics related to writing, systems administration, and open source technologies. He is the author of three books, Pulling Strings with Puppet: Systems Administration Made Easy (Apress, 2008), Hardening Linux (Apress, 2008), and Pro Nagios 2.0 (Apress, 2006). Peter Lieverdink was born in a small Dutch country town. He owns a pair of clogs, but has never eaten tulips or lived in a windmill. On his 22nd birthday, Peter moved to Australia and briefly worked in an office cubicle. He now runs his own business, Creative Contingencies Pty, Ltd. The business depends on open source software for infrastructure and development as well as daily office tasks. Peter specializes in web application development and helping other businesses implement open source solutions using Linux on both desktops and servers. Show Less