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The gpgconf is a utility to automatically and reasonable
safely query and modify configuration files in the .gnupg home
directory. It is designed not to be invoked manually by the user, but
automatically by graphical user interfaces (GUI).3
gpgconf provides access to the configuration of one or more
components of the GnuPG system. These components correspond more or
less to the programs that exist in the GnuPG framework, like GPG,
GPGSM, DirMngr, etc. But this is not a strict one-to-one
relationship. Not all configuration options are available through
gpgconf. gpgconf provides a generic and abstract
method to access the most important configuration options that can
feasibly be controlled via such a mechanism.
gpgconf can be used to gather and change the options
available in each component, and can also provide their default
values. gpgconf will give detailed type information that
can be used to restrict the user’s input without making an attempt to
commit the changes.
gpgconf provides the backend of a configuration editor. The
configuration editor would usually be a graphical user interface
program that displays the current options, their default
values, and allows the user to make changes to the options. These
changes can then be made active with gpgconf again. Such a
program that uses gpgconf in this way will be called GUI
throughout this section.
Please note that currently no locking is done, so concurrent access should be avoided. There are some precautions to avoid corruption with concurrent usage, but results may be inconsistent and some changes may get lost. The stateless design makes it difficult to provide more guarantees.
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