[LAU] how can I send a midi command from bash through jack to my HW controller?

Athanasios Silis athanasios.silis at gmail.com
Sun Oct 8 01:20:03 UTC 2017

Hi all and thank you for your immediate responses.
In the end what I was looking for was not the "midi through port" but a
virtual midi port.
To do that I had to add in /etc/modules-load.d/audio.conf
snd-virmidi midi_devs=1 index=5

then I could see
$ amidi -l
Dir Device    Name
..... (other devices) .....
IO  hw:5,0    Virtual Raw MIDI (16 subdevices)

and at the same time it would show up in jack's "midi" tab
then I could simply use it as

amidi -phw:5,0 -S <hexbytes>

and the midi msg was surely enough sent correctly to the HW controller.

Thank you for your help!
I hope this helps others as well

On Sun, Oct 8, 2017 at 2:50 AM, Jeanette C. <julien at mail.upb.de> wrote:

> Oct 8 2017, Athanasios Silis has written:
> ...
>> amidi -p"14:0" -S <3x bytes depicting the midi CC command>
> ...
> Hi Athanasios,
> amidi uses ALSA hardware ports, not ALSA SEQuencer ports. On my system
> MIDI thru doesn't show up under those. You can list them with:
> amidi -l
> or look at:
> /proc/asound/cards
> Since you're sending MIDI CCs and no SysEx you can use a tool that
> supports ALSA SEQ ports.
> If your CCs and values are always the same - or just a few setups - you
> could put them inside a MIDI file and then use aplaymidi. Otherwise
> there is midish a commandline tool, that supports its own bash-like
> scripting. It wouldn't be too hard to set something like this up.
> http://www.midish.org
> If Python or other scripting languages are an option, there are some
> packages for these languages which support ALSASEQ I/O. If midish looks
> promising, but too much work for a start, I could help.
> HTH.
> Best wishes,
> Jeanette
> --------
> * website: http://juliencoder.de - for summer is a state of sound
> * SoundCloud: https://soundcloud.com/jeanette_c
> ... About some useless information,
> Supposed to fire my imagination <3
> (Britney Spears)
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