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Learning the Korn Shell
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Learning the Korn Shell

Learning the Korn Shell

Bill Rosenblatt, Arnold Robbins

412 pages, parution le 30/04/2002 (2eme édition)

Résumé

The Korn shell is an interactive command and scripting language for accessing Unix® and other computer systems. As a complete and high-level programming language in itself, it's been a favorite since it was developed in the mid 1980s by David G. Korn at AT&T Bell Laboratories. Knowing how to use it is an essential skill for serious Unix users. Learning the Korn Shell shows you how to use the Korn shell as a user interface and as a programming environment.

Writing applications is often easier and quicker with Korn than with other high-level languages. Because of this, the Korn shell is the most often used shell in commercial environments and among inexperienced users. There are two other widely used shells, the Bourne shell and the C shell. The Korn shell, or ksh, has the best features of both, plus many new features of its own. ksh can do much to enhance productivity and the quality of a user's work, both in interacting with the system, and in programming. The new version, ksh93, has the functionality of other scripting languages such as awk, icon, Perl, rexx, and tcl.

Learning the Korn Shell is the key to gaining control of the Korn shell and becoming adept at using it as an interactive command and scripting language. Prior programming experience is not required in order to understand the chapters on basic shell programming. Readers will learn how to write many applications more easily and quickly than with other high-level languages. In addition, readers will also learn about Unix utilities and the way the Unix operating system works in general. The authors maintain that you shouldn't have to be an internals expert to use and program the shell effectively.

The second edition covers all the features of the current version of the Korn shell, including many new features not in earlier versions of ksh93, making it the most up-to-date reference available on the Korn shell. It compares the current version of the Korn shell to several other Bourne-compatible shells, including several Unix emulation environments for MS-DOS and Windows. In addition, it describes how to download and build ksh93 from source code.

A solid offering for many years, this newly revised title inherits a long tradition of trust among computer professionals who want to learn or refine an essential skill.

  • 1. Korn Shell Basics
  • What Is a Shell?
  • Scope of This Book
  • History of Unix Shells
  • Getting the 1993 Korn Shell
  • Interactive Shell Use
  • Files
  • Input and Output
  • Background Jobs
  • Special Characters and Quoting
  • 2. Command-Line Editing
  • Enabling Command-Line Editing
  • The History File
  • Emacs Editing Mode
  • Vi Editing Mode
  • The hist Command
  • Finger Habits
  • 3. Customizing Your Environment
  • The .profile File
  • Aliases
  • Options
  • Shell Variables
  • Customization and Subprocesses
  • Customization Hints
  • 4. Basic Shell Programming
  • Shell Scripts and Functions
  • Shell Variables
  • Compound Variables
  • Indirect Variable References (namerefs)
  • String Operators
  • Command Substitution
  • Advanced Examples: pushd and popd
  • 5. Flow Control
  • if/else
  • for
  • case
  • select
  • while and until
  • 6. Command-Line Options and Typed Variables
  • Command-Line Options
  • Numeric Variables and Arithmetic
  • Arithmetic for
  • Arrays
  • typeset
  • 7. Input/Output and Command-Line Processing
  • I/O Redirectors
  • String I/O
  • Command-Line Processing
  • 8. Process Handling
  • Process IDs and Job Numbers
  • Job Control
  • Signals
  • trap
  • Coroutines
  • Shell Subprocesses and Subshells
  • 9. Debugging Shell Programs
  • Basic Debugging Aids
  • A Korn Shell Debugger
  • 10. Korn Shell Administration
  • Installing the Korn Shell as the Standard Shell
  • Environment Customization
  • Customizing the Editing Modes
  • System Security Features
Appendix A. Related Shells
Appendix B. Reference Information
Appendix C. Building ksh from Source Code
Appendix D. AT&T ast Source Code License Agreement

L'auteur - Bill Rosenblatt

Bill Rosenblatt is author of the the O'Reilly Nutshell Handbook(R) Learning the Korn Shell; co-author, with Deb Cameron, of Learning GNU Emacs; and a contributor to UNIX Power Tools. He is director of publishing systems at the Times Mirror Company in New York City and a columnist in SunWorld Online magazine on the World Wide Web. Bill received a B.S.E. from Princeton University and an M.S. and A.B.D. from the University of Massachusetts at Amherst, each in some variant of computer science. His interests in the computing field include multimedia databases, electronic publishing, and object- oriented systems. Outside of the computing field, he's interested in jazz, classical music, antique maps, and Sherlock Holmes pastiche novels. Bill lives on the Upper West Side of Manhattan. He wishes his landlord allowed pets so that he could truthfully claim to have a dog and cat with suitably droll names like "Coltrane" and "Ravel."

L'auteur - Arnold Robbins

Arnold Robbins, an Atlanta native, is a professional programmer and technical author. He is also a happy husband, the father of four very cute children, and an amateur Talmudist (Babylonian and Jerusalem). Since late 1997, he and his family have been living happily in Israel. Arnold has been working 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.

Autres livres de Arnold Robbins

Caractéristiques techniques

  PAPIER
Éditeur(s) O'Reilly
Auteur(s) Bill Rosenblatt, Arnold Robbins
Parution 30/04/2002
Édition  2eme édition
Nb. de pages 412
Format 18 x 23,5
Couverture Broché
Poids 717g
Intérieur Noir et Blanc
EAN13 9780596001957
ISBN13 978-0-596-00195-7

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