My name is Keith Graybeal, and I began my career in corporate I.T. in 1988.  Since 1992, I have worked primarily as a UNIX, and Linux Systems Administrator and Engineer.  However, my experience also includes roles as an Oracle DBA, Windows System Administrator, Cisco Network Administrator, and Security Engineer.  I have worked in Fortune and Global 500 environments like McDonald's, Hyatt Hotels, and Zurich Financial Services.  As well as multiple financial firms like the Chicago Board of Options Exchange, Bank of Montreal, and Lind-Waldock.  I have taken decades of experience and created this course for the individual who wants to have a strong fundamental understanding of the GNU/Linux Operating System