pam

crond: PAM adding faulty module: /lib64/security/pam_unix.so

Sample error log in /var/log/messages:

Oct 28 09:15:01 gentoo-host crond[16678]: PAM adding faulty module: /lib64/security/pam_unix.so Oct 28 09:15:01 gentoo-host crond[16677]: (user) PAM ERROR (Module is unknown) Oct 28 09:15:01 gentoo-host crond[16677]: (user) FAILED to authorize user with PAM (Module is unknown) Oct 28 09:15:01 gentoo-host crond[16678]: (user) PAM ERROR (Module is unknown) Oct 28 09:15:01 gentoo-host crond[16678]: (user) FAILED to authorize user with PAM (Module is unknown)

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~/.pam_environment

Use this file to save environment variables, to be used by PAM-aware software.

This file is part of the official PAM specification:
http://www.linux-pam.org/Linux-PAM-html/sag-pam_env.html

http://linux.overshoot.tv/wiki/environment_variables
http://linux.overshoot.tv/wiki/pluggable_authentication_modules_pam

Pluggable Authentication Modules (PAM)

http://linux-pam.org/
https://en.wikipedia.org/wiki/Linux_PAM
https://en.wikipedia.org/wiki/Pluggable_authentication_module
https://wiki.gentoo.org/wiki/PAM
https://wiki.gentoo.org/wiki/Project:PAM
https://wiki.gentoo.org/wiki/Project:PAM/Service_files
https://wiki.archlinux.org/index.php/PAM

http://linux.overshoot.tv/etc/pam.d

/etc/pam.d/sddm-greeter

/etc/pam.d/sddm-greeter
For details, see:
http://linux.overshoot.tv/wiki/sddm_helper

/etc/pam.d/

http://linux.overshoot.tv/wiki/pluggable_authentication_modules_pam

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