Throughout this book you??™ll find descriptions of the configuration files you need to set up the different
features that make up Linux systems. The two major locations of configuration files are your
home directory (where your personal configuration files are kept) and the /etc directory (which
holds system-wide configuration files).
Following are descriptions of directories (and subdirectories) that contain useful configuration
files. (Refer to Table 4-1 for some individual configuration files in /etc that are of particular
interest.) Viewing the contents of Linux configuration files can teach you a lot about administering
Linux systems.
$HOME??”All users store information in their home directories that directs how their login
accounts behave. Most configuration files in $HOME begin with a dot (.), so they don??™t
appear in a user??™s directory when you use a standard ls command (you need to type
NOTE
NOTE
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Learning Basic Administration 4
ls -a to see them). There are dot files that define how each user??™s shell behaves, the
desktop look-and-feel, and options used with your text editor. There are even files such
as .ssh/* and .rhosts that configure network permissions for each user. (To see the
name of your home directory, type echo $HOME from a shell.
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