.TH SYSTEM-AUTH 5 "2010 Dec 22" "Red Hat" "Linux-PAM Manual" .SH NAME system-auth \- Common configuration file for PAMified services .SH SYNOPSIS .B /etc/pam.d/system-auth .B /etc/pam.d/password-auth .B /etc/pam.d/fingerprint-auth .B /etc/pam.d/smartcard-auth .sp 2 .SH DESCRIPTION The purpose of these configuration files are to provide a common interface for all applications and service daemons calling into the PAM library. .sp The .BR system-auth configuration file is included from nearly all individual service configuration files with the help of the .BR substack directive. .sp The .BR password-auth .BR fingerprint-auth .BR smartcard-auth configuration files are for applications which handle authentication from different types of devices via simultaneously running individual conversations instead of one aggregate conversation. .SH NOTES Previously these common configuration files were included with the help of the .BR include directive. This limited the use of the different action types of modules. With the use of .BR substack directive to include these common configuration files this limitation no longer applies. .SH BUGS .sp 2 None known. .SH "SEE ALSO" pam(8), config-util(5), postlogin(5) The three .BR Linux-PAM Guides, for .BR "system administrators" ", " .BR "module developers" ", " and .BR "application developers" ". "