In addition to the files pertaining to the RPM system that reside in
/var/lib/rpm (see Chapter 5 for more
information on RPM), there are two other
special locations that are reserved for Red Hat Linux configuration and
operation.
The control-panel and related tools puts many
scripts, bitmaps and text files in /usr/lib/rhs.
There is probably nothing here that you would want to edit.
The other location, /etc/sysconfig, stores
configuration information. The major users of the files in this
directory are the scripts that run at boot time. It is possible to edit
these by hand, but it would be better to use the proper
control-panel tool.