O'REILLY RELEASES GUIDE TO SOLVING KORN SHELL PROBLEMS

JUly 19, 1993 -- SEBASTOPOL, CA -- The Korn shell is the newest and most
interesting of the "standard" UNIX shell programs. It combines the best
features of the older Bourne and C shells, in addition to providing many
new features of its own. To help users and programmers get the most out of
the Korn shell, O'Reilly & Associates has published Learning the Korn
Shell, by Bill Rosenblatt. It provides a guide to all aspects of Korn sell
usage: interactive "command line" use, plus thorough coverage of shell
programming.

The Korn Shell is completely compatible with the older Bourne shell, so
readers could use it and pretend that nothing has changed. But if they
really want to take advantage of the Korn Shell -- or if they've wanted to
learn shell programming for a while, but procrastinated -- this is where
to start. In addition to the basics of UNIX shell programming, Learning
the Korn Shell explains ksh string operations, co-processes, signals and
signal handling, and one of the worst "dark corners" of shell programming,
command-line interpretation. It covers new features like command history,
which allows readers to recall and re-use previous commands conveniently,
and built-in pattern matching, arithmetic evaluation, and condition
evaluation, which allow them to write much more efficient shell scripts.

Unlike existing Korn books, which tend to focus on ksh syntax, this newest
O'Reilly Nutshell Handbook shows how to use the Korn shell to solve
relatively sophisticated real-life programming problems. As an extended
example of advanced shell programming, it contains kshdb, a Korn shell
script that's a debugger for shell scripts. This book is a reliable
resource for software developers who want to "prototype" their designs,
system administrators who want to write tools for their own use, and even
UNIX novices who just want to use some of ksh's more advanced interactive
freatures.

As Appendix summarizes the differences between the Korn shell and the
standard Bourne shell, the IEEE 1003.2 POSIX Shell Standard, the Windowing
Korn shell (wksh), and such public domain versions as pdksh and bash.

Bill Rosenblatt is coauthor, with Deb Cameron, of the O'Reilly Nutshell
Handbook Learning GNU Emacs. He is a software manager at Moody's Investors
Service in New York and a writer for Sun World and other magazines. The
book's editor is Mike Loukides, author of the acclaimed System Performance
Tuning, also published by O'Reilly.

O'Reilly & Associates is recognized worldwide for its definitive books on
UNIX, The X Window System, and the Internet. Working closely with
developers of new technologies, O'Reilly's editors are "computer people"
who use the software they write about. The company's planning and review
cycles link together authors, computer vendors, and technical experts
throughout the industry in a creative collaboration that mirrors the
strengths of the "open systems" philosophy itself.

Learning the Korn Shell
By Bill Rosenblatt
338 pages, ISBN 1-56592-054-6, Price $27.95
Toll free order number: 800/998-9938

O'Reilly & Associates Inc
103 Morris St, Suite A, Sebastopol, CA 95472
707-829-0515,   fax 707-829-0104

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