Again, this usually their password. In the login config file, we see at least one entry for each type. The control token tells PAM what should be done in if authentication by this module fails. If authentication by this module is successful, PAM will grant authentication, even if a previous required module failed. In the configuration file for login, we see nearly all of the different control types.
Most configurations only contain the module's name, as is the case in our login configuration file.
The module-arguments are arguments to be passed to the module. Each module has its own arguments. Getting more information For more information on configuring PAM and complete PAM module reference, consult the Linux-PAM System Administrator's Guide .