Before proceeding to read the rest of this document, it should be noted that the text assumes that certain files are placed in certain directories. Where they have been specified, the conventions we adopt here for locating these files are those of the relevant RFC (RFC-86.0, see bibliography). If you are using a distribution of Linux (or some other operating system) that supports PAM but chooses to distribute these files in a diferent way, you should be careful when copying examples directly from the text.
As an example of the above, where it is explicit, the text assumes
that PAM loadable object files (the modules) are to be located in
the following directory: /usr/lib/security/
. However, Red Hat
Linux, in agreement with the Linux File System Standard (the FSSTND),
places these files in /lib/security
. Please be careful to
perform the necessary transcription when using the examples from the
text.