The "config" command:

Usage: fossil configuration METHOD ... ?OPTIONS?

Where METHOD is one of: export import merge pull push reset.  All methods
accept the -R or --repository option to specific a repository.

   fossil configuration export AREA FILENAME

        Write to FILENAME exported configuraton information for AREA.
        AREA can be one of:  all email project shun skin ticket user

   fossil configuration import FILENAME

        Read a configuration from FILENAME, overwriting the current
        configuration.

   fossil configuration merge FILENAME

        Read a configuration from FILENAME and merge its values into
        the current configuration.  Existing values take priority over
        values read from FILENAME.

   fossil configuration pull AREA ?URL?

        Pull and install the configuration from a different server
        identified by URL.  If no URL is specified, then the default
        server is used. Use the --legacy option for the older protocol
        (when talking to servers compiled prior to 2011-04-27.)  Use
        the --overwrite flag to completely replace local settings with
        content received from URL.

   fossil configuration push AREA ?URL?

        Push the local configuration into the remote server identified
        by URL.  Admin privilege is required on the remote server for
        this to work.  When the same record exists both locally and on
        the remote end, the one that was most recently changed wins.
        Use the --legacy flag when talking to holder servers.

   fossil configuration reset AREA

        Restore the configuration to the default.  AREA as above.

   fossil configuration sync AREA ?URL?

        Synchronize configuration changes in the local repository with
        the remote repository at URL.  

Options:
   -R|--repository FILE       Extract info from repository FILE

See also: settings, unset