CODEWITHSUNDEEP
bash
Chasidish
Chasidish

Reputation: 57

Execute two programs in separate screen windows with bash

I’ve been toying around to create a functional bash script to solve my problem, but have’t been successful.

The problem:

I need to execute these two scripts from different terminals (or windows using screen):

fluidsynth -a alsa -c 3 -g 3 /usr/share/sound/sf2/piano.sf2

aconnect 20:0 128:0

What I would do manually is launch screen and execute the first command then ctrl+a+c and execute the second.

The important part:

The second command can only be run after the fluidsynth programs successfully powers-up, and must be run from a different terminal.

My attempt so far:

screen -S fluid /usr/midi/fluid.sh & sleep 10 aconnect 20:0 128:0

The fluid.sh file:

fluidsynth -a alsa -c 3 -g 3 /usr/share/sound/sf2/piano.sf2

Could anyone point out what I’m doing wrong here?

Upvotes: 2

Views: 651

Answers (1)

root
root

Reputation: 6048

The simple answer would be:

screen -d -m -S fluid fluidsynth -a alsa -c 3 -g 3 /usr/share/sound/sf2/piano.sf2
screen -d -m -S connect bash -c "sleep 10; aconnect 20:0 128:0"

-d -m tells screen to start in detached mode.

If you have a way to detect fluidsynth's powerup, e.g. there's a file that should be there, you can replace the sleep 10 with a loops that does sleep 1 until the file exists.

Upvotes: 2

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