Voir :

• pam Sudoers - PAM
• Notes userhelper - usermode
• http://artisan.karma-lab.net/petite-introduction-a-pam
• http://debian-facile.org/doc:systeme:pam
• http://tldp.org/HOWTO/User-Authentication-HOWTO/x115.html
• pam-auth-update
• https://askubuntu.com/questions/821793/su-without-password-with-pam-su-authentication

• pam_timestamp.so
• pam_permit.so
• pam_xauth.so
• pam_permit.so
• pam_exec.so

/home/$USER/.pam_environment