Yep, from my legally acquired PDF version of the book:

What’s on the CD-ROM

The Perl Black Book, 2nd Edition companion CD-ROM contains elements specifi- cally selected to enhance the usefulness of this book. You’ll find the code from the book arranged in directories, organized by chapter.

There are two versions of all source code—one in the DOS subdirectory and one in the Unix subdirectory for each chapter. The only difference between these versions is how the text is formatted.

The DOS version of each source file uses a carriage return/line feed at the end of each line, as is standard in DOS, and the Unix version uses a newline character (only) at the end of each line, as is standard in Unix. I’ve provided both versions to let you choose the version best suited to your editing program. Besides this differ- ence, the two versions of the source code files are the same.

The file code XX, where XX is a chapter number, contains the code from Chapter XX. To run a specific example from Chapter XX, copy and paste the appropriate code from code XX to a new file and run that new file using Perl. Note that in some cases you should update file paths or URLs in the code before execution—see the book for the details.

There is no special preparation needed for installation, just copy the files you want to use to your hard disk.