Bill Calkins is owner and president of Pyramid Consulting, a computer training and consulting firm specializing in the implementation and administration of open systems. He works as a consultant with Sun Microsystems and has contributed extensively to the Solaris certification program and simulation technology. He also owns www.unixed.com, a website that provides online UNIX training materials. Bill has more than 20 years of experience in UNIX system administration, consulting, and training at more than 250 different companies and government agencies and has authored several books on Solaris.