How can I execute a shell command?

Question

This page says to run a shell command I need a "proxy code" running on my computer (Linux Ubuntu). What do they mean by this, and how should I make one?

Answer 1

I'm not familiar with the term proxy code, but I'm assuming that it's a piece of code on your computer that acts as a man in the middle.

You cannot directly use Arduino to run a shell command, so you'll need to create a program on your computer that listens to serial and then executes a command.

For the "proxy code" Python would be a good choice because of the pySerial library that plays nicely with Arduino. It seems fairly easy to execute a shell command with Python.

As per the Arduino code, something like this would work good:

setup() {
 Serial.begin(9600);
}
loop() {
 if(state == true) {
 Serial.print('A');
 }
}

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