RHCSA & RHCE Red Hat Enterprise Linux 7: Training and Exam Preparation Guide (Ex200 and Ex300) About the Author Asghar Ghori is a seasoned Linux/UNIX consultant, trainer, and author. As a consultant, his 25 years of experience ranges from IT infrastructure deployment, support, and administration to architecture, design, and consulting. As a trainer, Ghori has designed and delivered numerous training programs. He has five books on UNIX and Linux to his credit. Ghori holds a bachelor of science in engineering and several certifications in Linux and UNIX.