Articles liés à Sed and Awk. Unix Power Tools, 2è édition
Synopsis
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
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À propos de l?auteur
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.
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sed & awk (Nutshell Handbooks)
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sed & awk
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sed & awk
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ISBN 10 : 1565922255
ISBN 13 : 9781565922259
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sed & awk
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sed & awk (Nutshell Handbooks)
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SED & AWK 2e: UNIX Power Tools (Nutshell Handbooks)
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Paperback. Etat : 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. N° de réf. du vendeur GOR002005278
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sed & awk
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ISBN 13 : 9781565922259
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Sed & Awk
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Sed & Awk
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ISBN 13 : 9781565922259
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