/etc/nologin
A message to denied users.
Login pam module
[service-name] function-class control-flag pam_nologin [options]
The No Login PAM module supports the account management function class. In terms of the function-class parameter, this is the “account” class.
The No Login authentication module always returns success for the superuser, and returns success for all other users if the file /etc/nologin does not exist. If /etc/nologin does exist, then its contents are echoed to non-superusers before failure is returned.
/etc/nologin
A message to denied users.
155 releases since Mac OS X 10.2; the text changed 1 time.