Learning the Bash Shell: Unix Shell Programming
Cameron Newham & Bill Rosenblatt
PostgreSQL: Up and Running
Regina O. Obe & Leo S. Hsu
Learn You Some Erlang for Great Good!: A Beginner's Guide
Fred Hébert
Java 9 High Performance
Mayur Ramgir
Information Doesn't Want to Be Free: Laws for the Internet Age
Cory Doctorow & Amanda Palmer & Neil Gaiman