Publisher: Morgan Kaufman
Do you find that your Perl programs bear a striking resemblance to code you've
written in other languages? Have your Perl programming skills reached a
plateau? Do you want to take your next big step in understanding Perl? If you
answered yes to one or more of these questions, then
Higher Order Perl (HOP) by Mark Jason Dominus should be
the next book on your purchase list.
A significant number of Perl programmers have their origins in system
administration. They began their careers writing code in C, awk and other
languages. As a result, many continue to write their Perl programs as if they
are writing the code in C. The goal of HOP is to teach experienced Perl
programmers the features that separate Perl from other programming languages
and how to put them to good use. As Dominus states, "Perl is much better at
being Perl than it is at being a slow version of C."
HOP is written for experienced Perl programmers. Dominus dives right in with
advanced techniques in the first chapter. So, you need to be capable of
following code that makes use of all the standard Perl tools and data
structures in order to grasp the ideas he is attempting to convey. If you are
starting your journey with Perl, save HOP for a future trip. But, if
you've been on the road for a while, this is just the book to liven things up.
This book is packed with valuable tips and techniques. Each topic is discussed
in depth, with plenty of code examples and descriptions to keep the reader up to
speed. That being said, be sure to carefully read and comprehend the examples.
You will quickly become lost if you don't, because each section builds on
previous topics. Dominus does his best to feed your brain slowly, but at some
point it's up to you to follow along.
Dominus writes with the functional programmer in mind, but those who prefer
other programming styles will find plenty of value in
HOP. Most, if not all,
of the functional programs and techniques can be adapted to object oriented and
other styles with minor tweaks. The topics cover a wide range of advanced
skills that will be appreciated by everyone. He successfully relates a great
deal of knowledge to be used by all Perl programmers, no matter which
styles they prefer.
Mark Jason Dominus has hit his mark with Higher Order
Perl. It is a very informative book that is a must read for Perl programmers who want to take
their skills to the next level. Be sure to check out
the book's Web site for
further information. The site provides full-text search, all the code
examples, an up-to-date errata list, mailing lists and much more.
Mark Rutz has been a practicing Perl programmer since 1999. He spends
his days working with Perl, Apache, MySQL and PostgreSQL and his nights
playing pool, riding his motorcycle and cheering on the Ravens. Your
comments are welcome at email@example.com.
Practical Task Scheduling Deployment
July 20, 2016 12:00 pm CDT
One of the best things about the UNIX environment (aside from being stable and efficient) is the vast array of software tools available to help you do your job. Traditionally, a UNIX tool does only one thing, but does that one thing very well. For example, grep is very easy to use and can search vast amounts of data quickly. The find tool can find a particular file or files based on all kinds of criteria. It's pretty easy to string these tools together to build even more powerful tools, such as a tool that finds all of the .log files in the /home directory and searches each one for a particular entry. This erector-set mentality allows UNIX system administrators to seem to always have the right tool for the job.
Cron traditionally has been considered another such a tool for job scheduling, but is it enough? This webinar considers that very question. The first part builds on a previous Geek Guide, Beyond Cron, and briefly describes how to know when it might be time to consider upgrading your job scheduling infrastructure. The second part presents an actual planning and implementation framework.
Join Linux Journal's Mike Diehl and Pat Cameron of Help Systems.
Free to Linux Journal readers.Register Now!
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With all the industry talk about the benefits of Linux on Power and all the performance advantages offered by its open architecture, you may be considering a move in that direction. If you are thinking about analytics, big data and cloud computing, you would be right to evaluate Power. The idea of using commodity x86 hardware and replacing it every three years is an outdated cost model. It doesn’t consider the total cost of ownership, and it doesn’t consider the advantage of real processing power, high-availability and multithreading like a demon.
This ebook takes a look at some of the practical applications of the Linux on Power platform and ways you might bring all the performance power of this open architecture to bear for your organization. There are no smoke and mirrors here—just hard, cold, empirical evidence provided by independent sources. I also consider some innovative ways Linux on Power will be used in the future.Get the Guide