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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

Listing only directories – alternative methods


Listing only directories via scripting can be deceptively difficult. This recipe is worth knowing since it introduces multiple ways of listing only directories with various useful techniques.

Getting ready

There are multiple ways of listing directories only. When you ask people about these techniques, the first answer that they would probably give is dir. However, the dir command is just another command like ls, but with fewer options. Let us see how to list directories.

How to do it...

There are several ways in which directories in the current path can be displayed:

  1. Using ls with -l to print directories:

    $ ls -d */
    
  2. Using ls -F with grep:

     $ ls -F | grep "/$"
    
  3. Using ls -l with grep:

    $ ls -l | grep "^d"
    
  4. Using find to print directories:

    $ find . -type d -maxdepth 1 -print
    

How it works...

When the -F parameter is used with ls, all entries are appended with some type of file characters such as @, *, |, and so on. For directories, entries are appended with...

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