ABSTRACT
This chapter’s learning objectives are • Understanding the role of text editors in Linux and specically how to use vi and/or
emacs
• Learning about the available productivity soware available in Linux
• Understanding the use of encryption in Linux and how to apply openssl
• Understanding the basic usage of the mail and sendmail programs
• Understanding the use of IP aliases and addresses and the domain name system (DNS) of the Internet
• Understanding the basic network commands available in Linux
5.1 INTRODUCTION One of the strengths of the Linux platform is that much of it has been developed by the open-source community. Not only does this mean that the operating system itself is available for free, it also means that a lot of the application soware for Linux is free. We brie y explore the open-source community and what it means to obtain the source code in Chapter 13. is chapter though is dedicated to examining some of the most popular and useful Linux applications soware.
