Is this what you're looking for?
derek@macumbista ~ $ jack_connect --help
usage: jack_connect <src_port> <dst_port>
The source port must be an output port of the source client.
The destination port must be an input port of the destination client.
d.
conrad berhörster wrote:
  Hello all,
 sorry for cross posting.
 at the jack application page there is a link to  command line port connector
 for jack.
 
http://sourceforge.net/mailarchive/message.php?msg_id=1171695
 but unfortunately the link to the sources is dead.
 is there a way to connect jack applications without qjackctl.
 every hint is welcome.
 sizu c~
  
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derek holzer ::: 
http://www.umatic.nl
---Oblique Strategy # 79:
"Go slowly all the way round the outside"