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sed & awk (英语) 平装 – 1997年3月1日

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基本信息

  • 出版社: O'Reilly Media; 2 (1997年3月1日)
  • 丛书名: Nutshell Handbooks
  • 平装: 432页
  • 语种: 英语
  • ISBN: 1565922255
  • 条形码: 9781565922259
  • 商品尺寸: 17.8 x 2.5 x 23.3 cm
  • 商品重量: 680 g
  • ASIN: 1565922255
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  • 亚马逊热销商品排名: 图书商品里排第691,525名 (查看图书商品销售排行榜)
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Publisher Comment
sed & awk, one of the most popular books in O'Reilly & Associates' Nutshell series, describes two text processing programs that are mainstays of the UNIX programmer's toolbox. sed is a "stream editor" for editing streams of text that might be too large to edit as a single file, or that might be generated on the fly as part of a larger data processing step. The most common operation done with sed is substitution, replacing one block of text with another. awk is a complete programming language. Unlike many conventional languages, awk is "data driven" -- you specify what kind of data you are interested in and the operations to be performed when that data is found. awk does many things for you, including automatically opening and closing data files, reading records, breaking the records up into fields, and counting the records. While awk provides the features of most conventional programming languages, it also includes some unconventional features, such as extended regular expression matching and associative arrays. sed & awk describes both programs in detail and includes a chapter of example sed and awk scripts. This new edition covers features of sed and awk that are now mandated by the POSIX standard. This most notably affects awk, where POSIX standardized a new variable, CONVFMT, and new functions, toupper() and tolower(). The CONVFMT variable specifies the conversion format to use when converting numbers to strings (awk used to use OFMT for this purpose). The toupper() and tolower() functions each take a (presumably mixed case) string argument and return a new version of the string with all letters translated to the corresponding case. In addition, this edition covers GNU sed, newly available since the first edition. It also updates the first edition coverage of Bell Labs nawk and GNU awk (gawk), covers mawk, an additional freely available implementation of awk, and briefly discusses three commercial versions of awk, MKS awk, Thompson Automation awk (tawk), and Videosoft (VSAwk).

From the Back Cover

The book begins with an overview and a tutorial that demonstrate a progression in functionality from grep to sed to awk. sed and awk share a similar command-line syntax, accepting user instructions in the form of a script. Because all three programs use UNIX regular expressions, an entire chapter is devoted to understanding UNIX regular expression syntax. Next, the book describes how to write sed scripts. After getting started by writing a few simple scripts, you'll learn other basic commands that parallel manual editing actions, as well as advanced commands that introduce simple programming constructs. Among the advanced commands are those that manipulate the hold space, a set-aside temporary buffer. The second part of the book has been extensively revised to include POSIX awk as well as coverage of three freely available and three commercial versions of awk. The book introduces the primary features of the awk language and how to write simple scripts. You'll also learn: common programming constructs; how to use awk's built-in functions; how to write user-defined functions; debugging techniques for awk programs; how to develop an application that processes an index, demonstrating much of the power of awk; and FTP and contact information for obtaining various versions of awk. Also included is a miscellany of user-contributed scripts that demonstrate a wide range of sed and awk scripting styles and techniques.


作者简介

Dale Dougherty is the publisher of the O'Reilly Network and Director of O'Reilly Research. Dale has been instrumental in many of O'Reilly's most important efforts, including founding O'Reilly & Associates with Tim O'Reilly. He was the developer and publisher of Global Network Navigator (GNN), the first commercial Web site. Dale was developer and publisher of Web Review, the online magazine for Web designers, and he was O'Reilly & Associates' first editor. Dale has written and edited numerous books at O'Reilly & Associates. Dougherty is a Lecturer in the School of Information Management and Systems (SIMS) at the University of California at Berkeley.

Arnold Robbins, an Atlanta native, is a professional programmer and technical author. He has worked with Unix systems since 1980, when he was introduced to a PDP-11 running a version of Sixth Edition Unix. He has been a heavy AWK user since 1987, when he became involved with gawk, the GNU project's version of AWK. As a member of the POSIX 1003.2 balloting group, he helped shape the POSIX standard for AWK. He is currently the maintainer of gawk and its documentation. He is also coauthor of the sixth edition of O'Reilly's Learning the vi Editor. Since late 1997, he and his family have been living happily in Israel.

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此商品在美国亚马逊上最有用的商品评论 (beta)

美国亚马逊: 平均4.5 星 69 条评论
1/1 人认为此评论有用
平均5.0 星 Buy it. 2015年11月6日
评论者 Murray Chase - 已在美国亚马逊上发表
版本: Kindle电子书 已确认购买
Just at a time when I became deeply embedded in SunOS 4.x work, I needed to be able to efficiently mange and manipulate text, I ran into a reference to the first edition of this book. It completely changed my relationship to UNIX and I found I could dig much deeper into necessary sources of information, whether logs, configuration files or to begin effectively creating highly functional and optimized scripts, this book has become the single most valuable book I had purchased.

It has sed and awk are some of the most integral components to everything from large-scale host-to-host or array-to-array data migrations to optimizing log parsing to assist in data/system/storage trending prior to the days of OTS solutions.
1/1 人认为此评论有用
平均4.0 星 Tired of lost weekends spent reformatting someone else's data? 2016年3月2日
评论者 Bill Horne - 已在美国亚马逊上发表
版本: 平装 已确认购买
if you're ready to use the command line again, and especially if you do research on text-based data, sed and awk are indispensible tools. There is a way to get just what I want, formatted the way I want it and ready to import into my spreadsheet, with these two tools. I am, frankly, surprised that I ever did without them: these programs have saved me from having to spend an entire weekend reformatting someone else's data, more than once.
5/5 人认为此评论有用
平均5.0 星 Fantastic 2012年2月15日
评论者 JD - 已在美国亚马逊上发表
版本: Kindle电子书 已确认购买
While laying in bed sick over this past weekend I read the SED portion of this book with out ever touching a keyboard. When I was done I got up and went to my computer and within 10 minutes I wrote a script that in 11 lines and 50 characters took the place of a Java program I had made to do the same task that was 120 lines and 740 characters... oh and it does it in 1/10th the time... This author lays things down in such a way that even while laying sick in bed simply reading from cover to cover you come out with such an understanding of what this tool can do that by the end of it your slamming your head against the wall for all the hours you have waisted on previous scripts/applications. 5 Stars hands down even if the AWK portion has nothing but "LoLz" written on every page!
1/1 人认为此评论有用
平均5.0 星 Best ref book on Awk around, and one of the very best on Sed. 2015年10月10日
评论者 Amazon Customer - 已在美国亚马逊上发表
已确认购买
I make my living as a computer techie and this is simply a replacement for a worn-out copy of the first edition which I've been using for what feels like millenia.

IMHO (OK, I know the authors and I'm biased) this is the definitive book on Awk, and it's one of the best books on sed, so if you're on a Unix/Linux/Solaris/HP-UX/Aix or other member of the "unice" family, I'd definitely recommend it.
1/1 人认为此评论有用
平均5.0 星 Great reference, a jewel in my collection. 2016年10月2日
评论者 galiosucks - 已在美国亚马逊上发表
已确认购买
Great reference if you work in sed and awk regularly, or if you are adding them to your workflow. This has solid examples that the man pages just dont have the depth to include, but are super useful in real world scenarios.