pam.conf 5 Linux-PAM Linux-PAM Manual pam.conf pam.d PAM configuration files /etc/pam.conf the configuration file /etc/pam.d the Linux-PAM configuration directory. Generally, if this directory is present, the /etc/pam.conf file is ignored. /usr/lib/pam.d the Linux-PAM vendor configuration directory. Files in /etc/pam.d override files with the same name in this directory. %vendordir%/pam.d additional Linux-PAM vendor configuration directory. Files in /etc/pam.d and /usr/lib/pam.d override files with the same name in this directory. pam3 , PAM8 , pam_start3