Pro Linux System Administration by James Turnbull, Good Book

UNIX and Linux System Administration Handbook by Ben Whaley, Dan Mackin,...

Linux System Administration Black Book: The Definitive Guide to Deploying an...

UNIX and Linux System Administration Handbook, 4th Edition - Paperback - GOOD

James Turnbull Hardening Linux Paperback 2005

Linux Administration Handbook (2nd Edition) - Paperback By Nemeth, Evi - GOOD

UNIX and Linux System Administration Handbook, 5th Ed. by Evie Nemeth (2018)

Automating Unix and Linux Administration (The - Paperback, by Bauer Kirk - Good