Christine Bresnahan is an Adjunct Professor at Ivy Tech Community College, where she teaches Linux certification and Python classes. She is the author of several books, including LPIC-1 Study Guide, Fifth edition and LPIC-2 Study Guide, Second edition.
Richard Blum has worked as a system and network administrator for over 30 years. He is the author of several Linux books, including Linux Command Line and Shell Scripting Bible and Linux for Dummies, 9th edition, and is a popular online Linux instructor.