aseqdump [-p client:port,...]
aseqdump is a command-line utility that prints the sequencer events it receives as text.
To stop receiving, press Ctrl+C.
A client can be specified by its number, its name, or a prefix of its name. A port is specified by its number; for port 0 of a client, the ":0" part of the port specification can be omitted.
Clemens Ladisch <firstname.lastname@example.org>