This chapter introduces some of the fundamental concepts behind network applications. Using these concepts, you will be able to create some simple tools, or you can build on this information by utilizing some of the advanced information available on the Internet and in advanced texts.

The concepts and examples presented here can all be easily applied to C programming because Perl essentially provides "wrappers" to the same system calls that C uses for socket programming. All the functions used here have C equivalents and their own manual pages.

For more information on network programming, see the UNIX socket programming FAQs at http://www.ibrado.com/sock-faq/. This page includes a wealth of information, plus pointers to other resources.

Part VII

Appendixes

In This PART

• The Linux Documentation Project 607
• Top 50 Linux Commands and Utilities 611
• The Linux Documentation Project Copyright License 629
• Glossary 633
• What's on the CD-ROM 653