Roanoke, the precursor organization to the Global e business Solutions Center. 

Since 1998 he has led the GeSC Linux team. He is a Certified Platform Specialist 

with both Linux and AIX. 

Jeroen van Hoof

 is a Senior IT Specialist with IBM Global Services in the 

Netherlands. He has over 15 years of experience with Unix operating systems 

and over 10 years experience with Linux. Before joining IBM through PwC 

Consulting, he worked in high performance computing at the Dutch National 

Supercomputing Centre as a parallelisation expert. His areas of expertise include 

Unix/Linux, Windows, TCP/IP networking (routing, switching), parallelisation 

(MPI, PVM), firewall security, programming (Fortran, C, Pascal, Perl), SAP Basis 

consultancy, and Web technologies (HTTP, HTML, CGI). He is a SAP Certified 

Technology Consultant and a Red Hat Certified Engineer. He holds a PhD in 

Theoretical Physics from the University of Nijmegen.

Sekhar Vaddadi

 is a Senior Software Engineer with IBM Software Labs in India. 

He has over nine years of experience with Unix and Linux operating systems. His 

areas of expertise include Unix/Linux, Windows, networking, various 

programming languages, Web technologies, and transaction processing. He is a 

certified administrator in Linux and HP UX. He received his Masters degree in 

Computer Science and Engineering from the Indian Institute of Technology, 

Mumbai, (IIT, bombay) India.

Christian Patsch

is a  Junior Consultant of the Linux team at Becom 

Informationssysteme Gmbh a premium business partner of  IBM in Germany. In 

April of this year, he got his degree in Business Informatics at the University of 

Applied Sciences Giessen Friedberg, finishing a diploma thesis about migration 

scenarios for  linux on the desktop . He has five years of experience in the 

client/server area, including both Windows and Linux environments.  His special 

areas of expertise in the Linux area are groupware solutions and client 

management.

Oliver Mark

 is a Certified Senior IT Architect and Principal at IBM Global 

Services Integrated Technology Services Germany. He has participated in a 

number of residencies including Warp, Linux, and other topics, and has 

published two external books. He has over 13 years of experience in the 

client/server area in various sectors, with a strong focus on Linux and 

OS/2 based end to end architectures. He is responsible for all IBM Global 

Services service offerings for Linux and OS/2 and its customers in the EMEA 

Central Region. He holds a degree in Economics and Computer Technologies. 

His areas of expertise include OS/2, Warp Server, IBM communication products, 

Windows, and Linux, as well as infrastructure and systems management 

architectures. As a member of the IBM Technical Expert Council, he has the 

opportunity to work on emerging topics, and gives IBM management advice on 

xx 

Linux Client Migration Cookbook   A Practical Planning and Implementation Guide for Migrating to Desktop Linux