JP Vossen

JP Vossen

Shell, Perl, Linux and InfoSec Geek

Areas of Expertise:

  • Shell scripting
  • Perl scripting
  • Linux
  • Information Security
  • Systems integration and automation
  • Technical writing

JP Vossen has been working with computers since the early 80s and has been in the IT industry since the early 90s, specializing in Information Security since the late 90s. He's been fascinated with scripting and automation since he first understood what an autoexec.bat was, and was delighted to discover the power and flexibility of bash and GNU on Linux in the mid-90s. He has previously written for Information Security Magazine and, among others. On those few occasion when he's not in front of a computer, he is usually taking something apart, putting something together, or both.

See also: and

bash Cookbook bash Cookbook
by Carl Albing, JP Vossen
Second Edition October 2017
Print: $59.99
Ebook: $50.99

"Heartily recommended to the casual user who wants to expand their repertoire and the power of their shell, and strongly recommended on the basis of assumptions to confident Bash users who want a handy reference book to keep to hand."
--Simon Armstrong, Compsoc -- Durham University Computing Society

"...this is a great bash scripting resource and should find a good home on any scripter's bookshelf. It provides enough instruction to help a new-ish user understand the deeper power of bash scripting while having enough breadth and depth to serve as an invaluable resource for the experienced scripting guru."
--Jim Jones, Morlock HQ

"...this book was refreshing in that it was properly organized, and surprisingly contemporary, even citing Virtualized platforms as a way to try out different OS's for Bash"
--Chad Wollenberg,

"This is the most effective bash resource I havev seen that focuses on practical resources for all (short of those who have achieved bash nirvana no matter what their level of experience."
--Major Keary, Book News

"[This] has been incredibly helpful in helping me improve my skills with Bash."
--Sam Merrell, I Love Libraries

"Linux system admin is something I do as part of my job. I've been able to acquire the basics and get the job done, but I knew that there were better ways to get the job done. Nothing like having an expert to help learn the ins and outs. This book allowed me to take it to the next level. There are many excellent examples on how to get it done, as well as advice on things that should not be done. There is a good mix of newbie info as well as useful tips for the seasoned veteran. There's usually more than one way to get the job done, and this book showed me some new, better ways to accomplish the task at hand. If you're working with bash, you'll find something useful in this book."
--T. Full,

"...what you will find is bash scripting presented in a way that will solve the problems you are facing TODAY. I found the book a pleasure to skim through. Yes I did read a lot of it, but I also found myself just flipping through the pages and reading the various problems and solutions. I can easily see myself picking this book up while coding and not having to look at 100's of man pages...A very well presented book that will stay in my immediate library next to my desk as I am sure I will lean heavily on it at times."
--James F. Koopmann, IToolbox Blogs

"I used bash cookbook for a week. Of the half-dozen times I cracked it open, it helped me more often than it didn’t. Now, I still believe that the old UNIX Power Tools book is still the best book ever written about the UNIX command line, and likely always will be–but bash cookbook has earned its place in my reference book rotation."
--Greg DeKoenigsberg, Red Hat Magazine

"If you are a Linux administrator or are just learning the skills, you probably have more than enough Linux-centric books on your shelf. That being the case, make room for the bash Cookbook. It's the missing link in your knowledge chain."
--James Pyles, The Linux Tutorial

"The bash Cookbook (O’Reilly Media, ISBN 0596526784), written by Carl Albing, JP Vossen, and Cameron Newham, presents a series of real world administration problems with real world solutions, all written in bash. The book is packed full of useful scripts, along with examples that explain how to create better scripts. Throughout the book, issues that can get you into real trouble are tagged with a small drawing of a trap. Anyone who uses bash can benefit from the bash Cookbook. The book is available through most book stores, or can be ordered directly from O’Reilly for $49.99. Alternatively, you can pay $25.99 to read the book online."
--Colin McGregor, Linux Magazine

"I would say bash Cookbook is absolutely a book worth owning if you enjoy shell scripting. I don't think I've ever seen a more complete set of solutions in a shell scripting book. In the preface, one thing that caught my eye ..... "But perhaps most importantly, we hope that when you have a question about how to do something or you need a hint, you will be able to easily find the right answer--or something close enough-- and save time and effort." ..... I think they accomplished their goal! 5 out of 5. Excellent book...excellent. "
--Dave Crouse, USA Linux Users Group

"All in all this is a very handy reference for a vast number of the tasks that you'll come across when scripting with the bash shell along with well-commented code. Highly recommended."