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