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  • 1
    Online Resource
    Online Resource
    Sed & awk (1997)
    Sebastopol, [Calif.] : O'Reilly | Boston, MA :Safari,
    Details
    Language: English
    Pages: xxii, 407 p. , ill. ; , 24 cm
    Edition: 2nd ed.
    Series Statement: A Nutshell handbook
    Keywords: Awk ; Sed (Computer file) ; UNIX (Computer file) ; Utilities (Computer programs) ; Electronic books ; local
    Abstract: 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).
    Note: "UNIX power tools"--Cover. - Includes bibliographical references and index
    URL: lizenzpflichtig
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  • 2
    Online Resource
    Online Resource
    Linux in a Nutshell, Fifth Edition (2005)
    [Erscheinungsort nicht ermittelbar] : O'Reilly Media, Inc. | Boston, MA : Safari
    Details
    ISBN: 0596009305
    Language: English
    Pages: 1 online resource (944 pages)
    Edition: 5th edition
    Keywords: Electronic books ; local
    Abstract: Over the last few years, Linux has grown both as an operating system and a tool for personal and business use. Simultaneously becoming more user friendly and more powerful as a back-end system, Linux has achieved new plateaus: the newer filesystems have solidified, new commands and tools have appeared and become standard, and the desktop--including new desktop environments--have proved to be viable, stable, and readily accessible to even those who don't consider themselves computer gurus. Whether you're using Linux for personal software projects, for a small office or home office (often termed the SOHO environment), to provide services to a small group of colleagues, or to administer a site responsible for millions of email and web connections each day, you need quick access to information on a wide range of tools. This book covers all aspects of administering and making effective use of Linux systems. Among its topics are booting, package management, and revision control. But foremost in Linux in a Nutshell are the utilities and commands that make Linux one of the most powerful and flexible systems available. Now in its fifth edition, Linux in a Nutshell brings users up-to-date with the current state of Linux. Considered by many to be the most complete and authoritative command reference for Linux available, the book covers all substantial user, programming, administration, and networking commands for the most common Linux distributions. Comprehensive but concise, the fifth edition has been updated to cover new features of major Linux distributions. Configuration information for the rapidly growing commercial network services and community update services is one of the subjects covered for the first time. But that's just the beginning. The book covers editors, shells, and LILO and GRUB boot options. There's also coverage of Apache, Samba, Postfix, sendmail, CVS, Subversion, Emacs, vi, sed, gawk, and much more. Everything that system administrators, developers, and power users need to know about Linux is referenced here, and they will turn to this book again and again.
    Note: Online resource; Title from title page (viewed July 27, 2005) , Mode of access: World Wide Web.
    URL: lizenzpflichtig
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    Online Resource
    MPI Ethno. Forsch.
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