#%PAM-1.0
auth		sufficient	/lib/security/pam_rootok.so
auth		required	/lib/security/pam_wheel.so group=wheel 
auth		required	/lib/security/pam_unix.so
account		required	/lib/security/pam_unix.so
password	required	/lib/security/pam_cracklib.so difok=2 minlen=8 dcredit=2 ocredit=2 retry=3
password	required	/lib/security/pam_unix.so md5 shadow use_authtok 
session		required	/lib/security/pam_unix.so
session		required	/lib/security/pam_env.so
session		required	/lib/security/pam_limits.so change_uid
session		optional	/lib/security/pam_xauth.so