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PAM_SHELLS(8)                  Linux-PAM Manual                  PAM_SHELLS(8)

NAME
       pam_shells - PAM module to check for valid login shell
SYNOPSIS
       pam_shells.so
DESCRIPTION
       pam_shells is a PAM module that only allows access to the system if the
       users shell is listed in /etc/shells.
       It also checks if /etc/shells is a plain file and not world writable.
OPTIONS
       This module does not recognise any options.
MODULE TYPES PROVIDED
       The auth and account module types are provided.
RETURN VALUES
       PAM_AUTH_ERR
           Access to the system was denied.
       PAM_SUCCESS
           The users login shell was listed as valid shell in /etc/shells.
       PAM_SERVICE_ERR
           The module was not able to get the name of the user.
EXAMPLES
           auth  required  pam_shells.so

SEE ALSO
       shells(5), pam.conf(5), pam.d(5), pam(8)
AUTHOR
       pam_shells was written by Erik Troan <ewt AT redhat.com>.

Linux-PAM Manual                  09/19/2013                     PAM_SHELLS(8)