The Linux Command

No Starch Press

The Linux Command Line, 2nd Edition: A Complete Introduction

Wiley

Linux Command Line and Shell Scripting Bible,Fourth Edition

O'Reilly UK Ltd.

Efficient Linux at the Command Line: Boost Your Command-Line Skills

No Starch Press

The Linux Command Line, 3rd Edition              

Independently published

Linux Command Line Made Easy: A Practical, Step By Step Guide To Linux Commands For Beginners And Intermediates

The Linux Command Line: A Complete Introduction by William E. Shotts Jr. (2012) Paperback

Drip Digital

Learn Linux Quickly: A Comprehensive Guide for Getting Up to Speed on the Linux Command Line (Ubuntu) (Crash Course With Hands-On Project)

No Starch Press

How Linux Works, 3rd Edition: What Every Superuser Should Know (English Edition)

No Starch Press

The Linux Memory Manager                        

Linux Administration: The Linux Operating System and Command Line Guide for Linux Administrators (English Edition)