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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

Faster archiving with pbzip2


Most modern computers today are equipped with at least two CPU cores - for the user it means almost the same as two real CPUs doing your work. However, just having a multicore CPU doesn't mean your programs will run faster, it is important that the programs themselves have been designed to run faster on multicore processors.

Most of the compression commands that we saw up to now will use only one CPU and, hence, won't be very fast. pbzip2 can use multiple cores, hence decreasing overall time taken to compress your files.

Getting ready

pbzip2 usually doesn't come preinstalled with most distros, you will have to use your package manager to install it.

How to do it...

Let's see how to use pbzip2 to compress files and extract them:

  1. Compress a single file like this:

    pbzip2 myfile.tar
    

    pbzip2 will automatically detect the number of cores on your system and compress myfile.tar, to myfile.tar.bz2

  2. To compress and archive multiple files or directories, we use pbzip2 in combination...

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