The "Linux Command Line, 2nd Edition: A Complete Introduction" by William Shotts is a comprehensive textbook designed for adult learners and university students studying system administration, Linux & Unix administration, operating systems, and programming. Published by No Starch Press, this UK-Trade Paper edition provides a detailed introduction to the command line interface, focusing on the essential commands and techniques needed for effective Linux administration. With 504 pages, this authoritative guide is an invaluable resource for those looking to enhance their knowledge and skills in Linux and Unix systems.