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.and 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 shell
