gnupg: GPGSM EXPORT

 
 5.6.7 Export certificates
 -------------------------
 
 To export certificate from the internal key database the command:
 
        EXPORT [--data [--armor] [--base64]] [--] PATTERN
 
    is used.  To allow multiple patterns (which are ORed) quoting is
 required: Spaces are to be translated into "+" or into "%20"; in turn
 this requires that the usual escape quoting rules are done.
 
    If the '--data' option has not been given, the format of the output
 depends on what was set with the 'OUTPUT' command.  When using PEM
 encoding a few informational lines are prepended.
 
    If the '--data' has been given, a target set via 'OUTPUT' is ignored
 and the data is returned inline using standard 'D'-lines.  This avoids
 the need for an extra file descriptor.  In this case the options
 '--armor' and '--base64' may be used in the same way as with the
 'OUTPUT' command.