false http://photo.goodreads.com/books/1174024413m/354484.jpg 354484 1 <i>sed & awk</i> describes two text processing programs that are mainstays of the UNIX programmer's toolbox. <i>sed</i> 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 <i>sed</i> is substitution, replacing one block of text with another. <i>awk</i> is a complete programming language. Unlike many conventional languages, <i>awk</i> is "data driven" -- you specify what kind of data you are interested in and the operations to be performed when that data is found. <i>awk</i> 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 <i>awk</i> provides the features of most conventional programming languages, it also includes some unconventional features, such as extended regular expression matching and associative arrays. <i>sed & awk</i> describes both programs in detail and includes a chapter of example <i>sed</i> and <i>awk</i> scripts. This edition covers features of <i>sed</i> and <i>awk</i> that are mandated by the POSIX standard. This most notably affects <i>awk</i>, where POSIX standardized a new variable, CONVFMT, and new functions, <i>toupper</i>() and <i>tolower</i>(). The CONVFMT variable specifies the conversion format to use when converting numbers to strings (<i>awk</i> used to use OFMT for this purpose). The <i>toupper</i>() and <i>tolower</i>() 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 <i>sed</i>, newly available since the first edition. It also updates the first edition coverage of Bell Labs <i>nawk</i> and GNU <i>awk</i> (<i>gawk</i>), covers <i>mawk</i>, an additional freely available implementation of <i>awk</i>, and briefly discusses three commercial versions of <i>awk</i>, MKS <i>awk</i>, Thompson Automation <i>awk</i> (<i>tawk</i>), and Videosoft (VSAwk). 344676 1 3 1997 sed & awk (2nd Edition) total:26|5:4|4:14|3:4|2:3|1:1| 26 95 57 2 354484 1565922255 9781565922259 26 2 3.65 http://photo.goodreads.com/books/1174024413m/354484.jpg http://www.goodreads.com/book/show/354484.sed_awk 5 0 false Thu Jan 22 00:00:00 -0800 2009 Thu Jan 22 12:10:01 -0800 2009 Thu Jan 22 12:13:18 -0800 2009 354484 1565922255 9781565922259 26 2 3.65 http://photo.goodreads.com/books/1174024413m/354484.jpg http://www.goodreads.com/book/show/354484.sed_awk 4 0 false Thu Mar 15 22:53:48 -0700 2007 Thu Mar 15 22:55:57 -0700 2007 more...]]> 354484 1565922255 9781565922259 26 2 3.65 http://photo.goodreads.com/books/1174024413m/354484.jpg http://www.goodreads.com/book/show/354484.sed_awk 0 0 false Fri Dec 04 14:49:42 -0800 2009 Fri Dec 04 14:49:42 -0800 2009 354484 1565922255 9781565922259 26 2 3.65 http://photo.goodreads.com/books/1174024413m/354484.jpg http://www.goodreads.com/book/show/354484.sed_awk 5 0 false Thu Nov 19 05:12:54 -0800 2009 Thu Nov 19 05:12:54 -0800 2009 354484 1565922255 9781565922259 26 2 3.65 http://photo.goodreads.com/books/1174024413m/354484.jpg http://www.goodreads.com/book/show/354484.sed_awk 0 0 false Sat Nov 07 07:41:31 -0800 2009 Sat Nov 07 07:41:31 -0800 2009 354484 1565922255 9781565922259 26 2 3.65 http://photo.goodreads.com/books/1174024413m/354484.jpg http://www.goodreads.com/book/show/354484.sed_awk 0 0 false Fri Oct 30 20:33:20 -0700 2009 Fri Oct 30 20:33:20 -0700 2009 354484 1565922255 9781565922259 26 2 3.65 http://photo.goodreads.com/books/1174024413m/354484.jpg http://www.goodreads.com/book/show/354484.sed_awk 4 0 false Thu Sep 03 00:29:00 -0700 2009 Thu Sep 03 00:29:00 -0700 2009 354484 1565922255 9781565922259 26 2 3.65 http://photo.goodreads.com/books/1174024413m/354484.jpg http://www.goodreads.com/book/show/354484.sed_awk 0 0 false Tue Sep 01 17:38:11 -0700 2009 Tue Sep 01 17:38:11 -0700 2009 354484 1565922255 9781565922259 26 2 3.65 http://photo.goodreads.com/books/1174024413m/354484.jpg http://www.goodreads.com/book/show/354484.sed_awk 0 0 false Wed Aug 26 23:29:12 -0700 2009 Wed Aug 26 23:29:12 -0700 2009 354484 1565922255 9781565922259 26 2 3.65 http://photo.goodreads.com/books/1174024413m/354484.jpg http://www.goodreads.com/book/show/354484.sed_awk 2 0 false Sun Aug 16 22:49:34 -0700 2009 Sun Aug 16 22:49:34 -0700 2009 354484 1565922255 9781565922259 26 2 3.65 http://photo.goodreads.com/books/1174024413m/354484.jpg http://www.goodreads.com/book/show/354484.sed_awk 3 0 false Thu Jul 16 21:11:56 -0700 2009 Wed Jul 15 21:34:38 -0700 2009 Thu Jul 16 21:11:56 -0700 2009 354484 1565922255 9781565922259 26 2 3.65 http://photo.goodreads.com/books/1174024413m/354484.jpg http://www.goodreads.com/book/show/354484.sed_awk 4 0 false Mon Jul 06 21:55:23 -0700 2009 Mon Jul 06 21:55:23 -0700 2009 354484 1565922255 9781565922259 26 2 3.65 http://photo.goodreads.com/books/1174024413m/354484.jpg http://www.goodreads.com/book/show/354484.sed_awk 0 0 false Sun Jun 28 21:01:12 -0700 2009 Sun Jun 28 21:37:56 -0700 2009 354484 1565922255 9781565922259 26 2 3.65 http://photo.goodreads.com/books/1174024413m/354484.jpg http://www.goodreads.com/book/show/354484.sed_awk 0 0 false Fri Jun 19 00:06:58 -0700 2009 Fri Jun 19 09:04:54 -0700 2009 354484 1565922255 9781565922259 26 2 3.65 http://photo.goodreads.com/books/1174024413m/354484.jpg http://www.goodreads.com/book/show/354484.sed_awk 5 0 false Mon Jun 15 20:18:56 -0700 2009 Mon Jun 15 20:18:56 -0700 2009 354484 1565922255 9781565922259 26 2 3.65 http://photo.goodreads.com/books/1174024413m/354484.jpg http://www.goodreads.com/book/show/354484.sed_awk 0 0 false Thu Apr 16 05:19:26 -0700 2009 Thu Apr 16 05:19:26 -0700 2009 354484 1565922255 9781565922259 26 2 3.65 http://photo.goodreads.com/books/1174024413m/354484.jpg http://www.goodreads.com/book/show/354484.sed_awk 0 0 false Sat Mar 28 11:53:47 -0700 2009 Sat Mar 28 11:53:47 -0700 2009 354484 1565922255 9781565922259 26 2 3.65 http://photo.goodreads.com/books/1174024413m/354484.jpg http://www.goodreads.com/book/show/354484.sed_awk 0 0 false Sat Feb 28 10:40:06 -0800 2009 Sat Feb 28 10:40:23 -0800 2009 354484 1565922255 9781565922259 26 2 3.65 http://photo.goodreads.com/books/1174024413m/354484.jpg http://www.goodreads.com/book/show/354484.sed_awk 4 0 false Mon Feb 02 10:57:57 -0800 2009 Mon Feb 02 10:57:57 -0800 2009 354484 1565922255 9781565922259 26 2 3.65 http://photo.goodreads.com/books/1174024413m/354484.jpg http://www.goodreads.com/book/show/354484.sed_awk 4 0 false Sat Jan 31 11:22:54 -0800 2009 Sat Jan 31 11:22:54 -0800 2009 http://www.goodreads.com/book_link/follow/8?book_id=354484