Learning the Bash Shell: Unix Shell Programming
Cameron Newham & Bill Rosenblatt
Puppet Best Practices
Chris Barbour
Docker: Up & Running
Karl Matthias & Sean P. Kane
CentOS High Availability
Mitja Resman
The UNIX Programming Environment
Brian Wilson Kernighan & Rob. Pike
How Linux Works: What Every Superuser Should Know
Brian Ward
Absolute FreeBSD: The Complete Guide to FreeBSD, 2nd Edition
Michael W. Lucas
Python for Unix and Linux System Administration
Noah Gift & Jeremy Jones
Bash Pocket Reference
Arnold Robbins
The Linux Programming Interface
Michael Kerrisk
UNIX and Linux System Administration Handbook 4th edition
Evi Nemeth & Garth Snyder & Trent R. Hein & Ben Whaley
Shell Scripting
Steve Parker
Linux Bible
Christopher Negus & Christine Bresnahan
Linux System Programming: Talking Directly to the Kernel and ...
Robert Love
Advanced Programming in the UNIX Environment
W. Richard Stevens & Stephen A. Rago
The Practice of Cloud System Administration: Designing and Operating ...
Thomas A. Limoncelli & Strata R. Chalup & Christina J. Hogan
The Practice of System Administration (2)
The Design and Implementation of the FreeBSD Operating System
Marshall Kirk McKusick & George V. Neville-Neil & Robert N. M. Watson
Networking for Systems Administrators (IT Mastery) (Volume 5)
Michael W Lucas
The GNU Make Book
John Graham-Cumming
Using Docker: Developing and Deploying Software With Containers
Adrian Mouat
Unix and Linux System Administration Handbook 5th Edition
Evi Nemeth & Garth Snyder & Ben Whaley & Trent Hein