--- product_id: 1614062 title: "Classic Shell Scripting" brand: "arnold robbinsnelson h. f. beebe" price: "NZ$77" currency: NZD in_stock: true reviews_count: 13 url: https://www.desertcart.nz/products/1614062-classic-shell-scripting store_origin: NZ region: New Zealand --- # Classic Shell Scripting **Brand:** arnold robbinsnelson h. f. beebe **Price:** NZ$77 **Availability:** ✅ In Stock ## Quick Answers - **What is this?** Classic Shell Scripting by arnold robbinsnelson h. f. beebe - **How much does it cost?** NZ$77 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/1614062-classic-shell-scripting) ## Best For - arnold robbinsnelson h. f. beebe enthusiasts ## Why This Product - Trusted arnold robbinsnelson h. f. beebe brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Full description not available ## Images ![Classic Shell Scripting - Image 1](https://m.media-amazon.com/images/I/81TI-UQRH4L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ A solid book on portable shell scripting *by A***G on Reviewed in the United States 🇺🇸 on August 2, 2011* "Classic Shell Scripting" by Arnold Robbins and Nelson H. F. Beebe is a decent text on portable shell scripting, which also contains a fair amount of awk. Though written in tutorial form, it explicitly assumes that the reader knows how to use the shell interactively and, as I show below, in some cases implicitly assumes that the reader already knows the basics of shell scripting.The Good: Robbins and Beebe have created a pedagogically sound book which contains tables, fascinating digressions, sidebars (with major options on tools, along with caveats), an annotated bibliography, as well as a glossary. The book can be read straight through, since each chapter builds on the preceding ones, but the aforementioned resources are especially handy when using this book as a reference. Were it not for the tables and sidebars it would be difficult to look up things like how to set the field separator in different tools (-t in sort, -d in cut, -F in awk) or how to ensure case-insensitivity (-i in grep, -f in sort). The topics the authors cover throughout the book are interesting, but the real meat is in chapters 3, 6, 7, 9, 10, which discuss regular expressions, sed, awk (Robbins is the maintainer of gawk and also the co-author/author of books on awk), control flow, command evaluation, and file manipulation. Most of the other chapters are applications of the topics introduced up to that point, and serve to drive home the lessons already learned (though there are pleasant exceptions to this pattern, e.g. the section on crontab in ch. 13, or the material on the Unix filesystem in Appendix B). The writing is generally relaxed and at times borderline silly, e.g. "exit 42 #Return the answer to the ultimate question" or "root) nasty stuff here #Danger Will Robinson, danger!". Importantly, the entire book is focused on scripting that is compatible with the POSIX standard(s) (e.g., the authors prefer printf to echo) -- it is similar in that sense to Peter Seebach's book on portable shell scripting from Apress. Apart from the pointers on the behavior of different shells scattered throughout the volume, the authors have also devoted ch. 14 to portability gotchas and shell-language extensions.The Bad: despite the tutorial nature of this text, it does have a few pedagogical flaws. These include the use of concepts before they are introduced (e.g. here-documents are used in ch. 4 but are mentioned by name only in ch. 5; the ${varname:-word} operator is used in ch. 5 but is not defined until ch. 6; the authors use >&2 three times in ch. 6 before pointing out that they will explain it in ch. 7). Such minor slip-ups extend to the use of concepts that are just not explained anywhere in the book (e.g. in ch. 3 the d command in sed, or in ch. 5 the -c option in grep). In yet other cases, the authors simply do not practice what they preach (e.g. in ch. 7 they recommend $() for command substitution, but then use `` in all but one of the examples in chapter 8, titled "Production Scripts"). On a different note, using this volume as a reference is not as easy as it should be. Tracking down an explanation months after you've finished reading the book can be frustrating, as I will illustrate with a specific example: the index entry for globbing says "see pathname expansion"; going to the index entry for pathname expansion we are pointed only to p. 496 (the glossary entry for that term), but not to any sections in any of the chapters. In the glossary entry on p. 496 we are told that globbing a.k.a. pathname expansion is also called wildcarding. Heading back to the index, no entry for wildcarding is to be found; there's an entry for wildcard expansion, instead, which looks relevant. Unfortunately, that entry not only points to irrelevant sections, but also ends with the inimitable "see also pathname expansion". All the while, subsection 7.5.2 is titled "Wildcarding", but you wouldn't get there simply by using the index. Sadly, the table of contents is similarly unhelpful in this context, since it includes sections, but not subsections.This book could be shorter, but it's still worth reading. I especially enjoyed the sections on regular expressions and on awk. As already explained, readers who know nothing about shell scripting may find this a difficult read, so they might want to first go over "Learning the bash shell" by Newham & Rosenblatt or a similar volume. Finally, access to an ebook version can make up for the deficiencies of the index when using Robbins' & Beebe's text as a reference. All in all, 4.5 stars.Alex Gezerlis ### ⭐⭐⭐ NOT for Beginners - Must Know Linux/Unix Shell! *by J***N on Reviewed in the United States 🇺🇸 on October 25, 2022* As another reviewer stated, this book assumes you have a solid understanding of shell interaction. I do not.Someday perhaps this will serve as a good reference. In the meantime, I'm gonna work with Python and Powershell to get my regex on. ### ⭐⭐⭐⭐⭐ Received in GOOD condition *by G***5 on Reviewed in the United States 🇺🇸 on May 15, 2022* No marks or tears. Clean. Obviously used. 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