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Michael J. Karels is the System Architect and Vice President of Engineering at Berkeley Software Design, Inc. He spent 8 years as the Principal Programmer of the CSRG at the University of California, Berkeley as the system architect for 4.3BSD. Karels received his Bachelor's degree in Microbiology from the University of Notre Dame. While a graduate student in Molecular Biology at the University of California, he was the principal developer of the 2.9BSD UNIX release of the Berkeley Software Distribution for the PDP-11. He is a member of the ACM, the IEEE, and several POSIX working groups. He lives with his wife Teri Karels in the backwoods of Minnesota.