Linux Shell Scripting Cookbook - Second Edition

Chapter 3. File In, File Out

In this chapter, we will cover:

• Generating files of any size
• The intersection and set difference (A-B) on text files
• Finding and deleting duplicate files
• Working with file permissions, ownership, and the sticky bit
• Making files immutable
• Generating blank files in bulk
• Finding symbolic links and their targets
• Enumerating file type statistics
• Using loopback files
• Creating ISO files and hybrid ISO
• Finding the difference between files, patching
• Using head and tail for printing the last or first 10 lines
• Listing only directories – alternative methods
• Fast command-line navigation using pushd and popd
• Counting the number of lines, words, and characters in a file
• Printing the directory tree

Introduction

Unix treats every object in the operating ...