pam_motd.so  [
        motd=/path/filename
      ]
      pam_motd is a PAM module that can be used to display
      arbitrary motd (message of the day) files after a successful
      login. By default the /etc/motd file is
      shown. The message size is limited to 64KB.
    
motd=/path/filename
        
	    The /path/filename file is displayed
            as message of the day.
          
motd_dir=/path/dirname.d
        
            The /path/dirname.d directory is scanned
            and each file contained inside of it is displayed.
          
      When no options are given, the default is to display both
      /etc/motd and the contents of
      /etc/motd.d.  Specifying either option (or both)
      will disable this default behavior.
    
      The suggested usage for /etc/pam.d/login is:
      
session  optional  pam_motd.so
      
      To use a motd file from a different location:
      
session  optional  pam_motd.so motd=/elsewhere/motd
      
      To use a motd file from elsewhere, along with a
      corresponding .d directory:
      
session  optional  pam_motd.so motd=/elsewhere/motd motd_dir=/elsewhere/motd.d