Currently our authentication setup related pages such as listed below only show explicit db.auth method of authentication:
http://docs.mongodb.org/manual/tutorial/configure-ldap-sasl-activedirectory/
http://docs.mongodb.org/manual/tutorial/configure-ldap-sasl-openldap/

Since a good percentage of users who use auth would be using directly using the command-line parameters, it would be useful to specify the command-line equivalent of these db.auth examples.

Currently the user need to guess / lookup other references and come-up with appropriate command-line that would have the same effect.