Classic Shell Scripting: Hidden Commands that Unlock the Power of Unix

O'Reilly Media, Inc. Classic Shell Scripting, the image of a African tent tortoise, and related trade dress Input and Output, Files, and Command Evaluation. . Unix shells, before the Bourne shell, were very primitive by modern standards, and The result is far more flexibility and power than any monolithic software pack-.
Table of contents

Nelson Beebe is a long time Unix user and system administrator, and has helped for years on Usenet newsgroups. With shell scripts, you can combine the fundamental Unix Hidden Commands that Unlock the Power of Unix. Arnold Robbins , Nelson Beebe. Pipelines Can Do Amazing Things. Variables Making Decisions and Repeating Actions. Shell Portability Issues and Extensions. Input and Output Files and Command Evaluation.

Shell Scripting Tutorial-47: Reading From a File

But beneath this simple promise lies a treacherous ocean of variations in Unix commands and standards. Classic Shell Scripting is written to help you reliably navigate these tricky waters. Writing shell scripts requires more than just a knowledge of the shell language, it also requires familiarity with the individual Unix programs: The authors are intimately familiar with the tips and tricks that can be used to create excellent scripts, as well as the traps that can make your best effort a bad shell script.

Classic Shell Scripting

With Classic Shell Scripting you'll avoid hours of wasted effort. You'll learn not only write useful shell scripts, but how to do it properly and portably. The ability to program and customize the shell quickly, reliably, and portably to get the best out of any individual system is an important skill for anyone operating and maintaining Unix or Linux systems. Classic Shell Scripting gives you everything you need to master these essential skills. Flowing text, Original pages. Web, Tablet, Phone, eReader. It syncs automatically with your account and allows you to read online or offline wherever you are.

Please follow the detailed Help center instructions to transfer the files to supported eReaders. Text Processing with Regular Expressions, Edition 2. For people who create and modify text files, sed and awk are power tools for editing. This new edition has expanded coverage of gawk GNU awk , and includes sections on: An overview of sed and awk?

It presents a concise summary of regular expressions and pattern matching, and summaries of sed and awk.


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Arnold Robbins, an Atlanta native now happily living in Israel, is a professional programmer and technical author and coauthor of various O'Reilly Unix titles. He has been working with Unix systems since , and currently maintains gawk and its documentation. Learning the bash Shell: Unix Shell Programming, Edition 3. O'Reilly's bestselling book on Linux's bash shell is at it again.

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Classic Shell Scripting - CERN Document Server

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