auth		sufficient	pam_rootok.so
auth 		required	pam_unix.so
account		required	pam_unix.so
session		optional	pam_mail.so	dir=/var/mail standard
session		optional	pam_xauth.so
session		optional 	pam_umask.so 	usergroups
session		required	pam_env.so
session		required	pam_unix.so