pmdf db is a utility with which to create and manipulate an alias database. Alias databases may either be a personal alias database or a system alias database. As the format of PMDF alias database is used for other PMDF databases (e.g., PMDF_DOMAIN_DATABASE), pmdf db can also be used to manipulate non-alias databases.

pmdf db is invoked by the command

% pmdf db

and may be exited by either typing Control-D or issuing the quit-program command.