Explains the progression in Unix from grep to sed and awk, describes how to write sed scripts, covers common programming constructs, and details awk's built-in functions
Die Inhaltsangabe kann sich auf eine andere Ausgabe dieses Titels beziehen.
Dale Dougherty is president and CEO of Songline Studios, a leading web publishing company. He is editor and publisher of Web Review (webreview.com), an innovative online magazine for web site developers. Prior to Songline, Dougherty developed the Global Network Navigator (GNN) and was the founding editor for O'Reilly's Nutshell Handbooks (R). Arnold Robbins, an Atlanta native, is a professional programmer and technical author. He has been working with UNIX systems since 1980, when he was intoduced 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. The documentation is available from the Free Software Foundation (http://www.gnu.org) and has also been published by SSC (http://www.ssc.com) as "Effective AWK Programming." He is also co-author 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.
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.|
„Über diesen Titel“ kann sich auf eine andere Ausgabe dieses Titels beziehen.
EUR 4,15 für den Versand von Vereinigtes Königreich nach Deutschland
Versandziele, Kosten & DauerEUR 5,92 für den Versand von Vereinigtes Königreich nach Deutschland
Versandziele, Kosten & DauerAnbieter: WorldofBooks, Goring-By-Sea, WS, Vereinigtes Königreich
Paperback. Zustand: Good. The book has been read but remains in clean condition. All pages are intact and the cover is intact. Some minor wear to the spine. Bestandsnummer des Verkäufers GOR001621470
Anzahl: 1 verfügbar
Anbieter: WorldofBooks, Goring-By-Sea, WS, Vereinigtes Königreich
Paperback. Zustand: Fair. A readable copy of the book which may include some defects such as highlighting and notes. Cover and pages may be creased and show discolouration. Bestandsnummer des Verkäufers GOR001785437
Anzahl: 1 verfügbar
Anbieter: medimops, Berlin, Deutschland
Zustand: good. Befriedigend/Good: Durchschnittlich erhaltenes Buch bzw. Schutzumschlag mit Gebrauchsspuren, aber vollständigen Seiten. / Describes the average WORN book or dust jacket that has all the pages present. Bestandsnummer des Verkäufers M01565922255-G
Anzahl: 1 verfügbar
Anbieter: WorldofBooks, Goring-By-Sea, WS, Vereinigtes Königreich
Paperback. Zustand: Very Good. sed & awk 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 edition covers features of sed and awk that are 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). The book has been read, but is in excellent condition. Pages are intact and not marred by notes or highlighting. The spine remains undamaged. Bestandsnummer des Verkäufers GOR002005278
Anzahl: 5 verfügbar
Anbieter: Phatpocket Limited, Waltham Abbey, HERTS, Vereinigtes Königreich
Zustand: Good. Your purchase helps support Sri Lankan Children's Charity 'The Rainbow Centre'. Ex-library, so some stamps and wear, but in good overall condition. Our donations to The Rainbow Centre have helped provide an education and a safe haven to hundreds of children who live in appalling conditions. Bestandsnummer des Verkäufers Z1-T-025-01902
Anzahl: 1 verfügbar
Anbieter: WeBuyBooks, Rossendale, LANCS, Vereinigtes Königreich
Zustand: Very Good. Most items will be dispatched the same or the next working day. A copy that has been read, but is in excellent condition. Pages are intact and not marred by notes or highlighting. The spine remains undamaged. Bestandsnummer des Verkäufers wbs2883946000
Anzahl: 1 verfügbar
Anbieter: WeBuyBooks, Rossendale, LANCS, Vereinigtes Königreich
Zustand: Good. Most items will be dispatched the same or the next working day. A copy that has been read but remains in clean condition. All of the pages are intact and the cover is intact and the spine may show signs of wear. The book may have minor markings which are not specifically mentioned. Bestandsnummer des Verkäufers wbs4460029971
Anzahl: 1 verfügbar
Anbieter: WorldThree, Sheffield, SY, Vereinigtes Königreich
Soft cover. Zustand: Fair. Scuffing and worn from use, but otherwise in good condition. All pages are free from notes and marking, except for biro dedication on front inside page. Bestandsnummer des Verkäufers ABE-1744043859549
Anzahl: 1 verfügbar
Anbieter: WorldThree, Sheffield, SY, Vereinigtes Königreich
Soft cover. Zustand: Good. Bestandsnummer des Verkäufers ABE-1743263063970
Anzahl: 1 verfügbar
Anbieter: Better World Books, Mishawaka, IN, USA
Zustand: Good. Used book that is in clean, average condition without any missing pages. Bestandsnummer des Verkäufers 1442257-6
Anzahl: 6 verfügbar