When you first look in the /etc directory, you might feel a bit overwhelmed. Although most of the files that you see affect a system’s operations to some extent, a few are fundamental.
The subject material in this chapter covers the parts of the system that make the infrastructure discussed in Chapter 4 available to the user-level tools covered in Chapter 2. In particular, we’re going to look at the following:
Configuration files that the system libraries access to get server and user information
Server programs (sometimes called daemons) that run when the system boots