Applied Cryptography
Bruce Schneier
Python Machine Learning By Example
Yuxi (Hayden) Liu
Learning Modern Linux
Michael Hausenblas
Linux Device Drivers, 3rd Edition
Greg Kroah-Hartman & Jonathan Corbet & Alessandro Rubini
Mastering Perl
Brian D Foy
Programming Perl
Tom Christiansen & Brian D Foy & Larry Wall & Jon Orwant
Intermediate Perl: Beyond the Basics of Learning Perl
Randal L. Schwartz & Brian D Foy & Tom Phoenix
Perl One-Liners
Peteris Krumins
Learning Perl