OpenStack Operations Guide
Tom Fifield & Lorin Hochstein & Jonathan Proulx & Everett Toews & Diane Fleming & Joe Topjian & Anne Gentle
Thoughtful Machine Learning With Python: A Test-Driven Approach
Matthew Kirk
Linux Bible
Christopher Negus & Christine Bresnahan
Learning the Bash Shell: Unix Shell Programming
Cameron Newham & Bill Rosenblatt
The Art of Computer Programming: Sorting and Searching
Donald E. Knuth
The Art of Computer Programming (3)