PAM configuration file

PAM (Pluggable Authentication Modules) is a user authentication and authorization system used on Linux and other Unix systems. Its configuration files are usually found in the  directory. There is also an  file, but it is rarely used.

A PAM configuration file is text-based. Most lines in the file specify a shared library module that is to be used in certain circumstances. The PAM modules are typically found in the directory, or  , or something like that.

Links

 * Linux-PAM website
 * Linux-PAM System Administrators' Guide: The Linux-PAM configuration file
 * Pluggable authentication module