2.6.14 Return information about the process
This is a multipurpose function to return a variety of information.
     GETINFO what
   The value of what specifies the kind of information returned:
     
- version
- Return the version of the program. 
 
- pid
- Return the process id of the process. 
 
- socket_name
- Return the name of the socket used to connect the agent. 
 
- ssh_socket_name
- Return the name of the socket used for SSH connections.  If SSH support
has not been enabled the error GPG_ERR_NO_DATAwill be returned.