Harley Hahn

Harley Hahn is a writer, philosopher, humorist and computer expert. In all, he has written 30 books that have sold more than 2 million copies, making him the best-selling Internet author of all time. 
Harley Hahn's Internet Yellow Pages, published by McGraw-Hill annually for 10 years, was the first Internet book in history to sell more than 1 million copies. This book, along with two other of Harley's Internet books — Harley Hahn's Internet Insecurity and Harley Hahn's Internet Advisor — were nominated for a Pulitzer Prize. 
Hahn is also the author of a variety of Unix- and Linux-related book and textbooks, including the highly regarded Harley Hahn's Guide to Unix and Linux.