midicopy(1) on Linux
The text 28eef26cb2d1, as Debian 9 (Stretch) shipped it.
Copy selected track, channel, time interval of a MIDI file to another MIDI file
Flags it lists
-
-chns -
-from -
-frombeat -
-fromsec -
-mutenodrum -
-replace -
-speed -
-to -
-tobeat -
-tosec -
-ver