Both John and Mark clearly understand Linux inside and out. Answered every question I had in detail and made sure I understood what was being said. First class as always. 100% w...

Mark, thank you for your first rate instruction; the course was exactly what I needed, it introduced me to concepts that I will be implementing in the future and fulfilled my o...

I found this course very engaging and informative. It really helped me get a good understanding of many areas of Linux including many I was not aware existed. The course notes w...