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Linux Shell Scripting Cookbook, Second Edition

You're reading from   Linux Shell Scripting Cookbook, Second Edition Don't neglect the shell ‚Äì this book will empower you to use simple commands to perform complex tasks. Whether you're a casual or advanced Linux user, the cookbook approach makes it all so brilliantly accessible and, above all, useful.

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Product type Paperback
Published in May 2013
Publisher Packt
ISBN-13 9781782162742
Length 384 pages
Edition 2nd Edition
Tools
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Toc

Table of Contents (16) Chapters Close

Linux Shell Scripting Cookbook
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
1. Shell Something Out FREE CHAPTER 2. Have a Good Command 3. File In, File Out 4. Texting and Driving 5. Tangled Web? Not At All! 6. The Backup Plan 7. The Old-boy Network 8. Put on the Monitor's Cap 9. Administration Calls Index

Archiving and compressing with zip


ZIP is a popular compression format used on many platforms. It isn't as commonly used as gzip or bzip2 on Linux platforms, but files from the Internet are often saved in this format. In this recipe we will see how to use zip to perform compression and extraction.

How to do it...

Let's see how to use various options with zip:

  1. In order to archive with ZIP, the following syntax is used:

    $ zip archive_name.zip [SOURCE FILES/DIRS]
    

    For example:

    $ zip file.zip file
    

    Here, the file.zip file will be produced.

  2. Archive directories and files recursively as follows:

    $ zip -r archive.zip folder1 folder2
    

    In this command, -r is used for specifying recursive.

  3. In order to extract files and folders in a ZIP file, use:

    $ unzip file.zip
    

It will extract the files without removing filename.zip (unlike unlzma or gunzip).

  1. In order to update files in the archive with newer files in the filesystem, use the-u flag:

    $ zip file.zip -u newfile
  2. Delete a file from a zipped archive, by using -d...

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