I’m trying to create a web page with 2 buttons, ON/OFF.
When a button is pressed, a local script located on my file system on Ubuntu should run, like a C compiled program. How can I do this via HTML/JavaScript?
For a better understanding, when the button ON is pressed, ECHO 1 > /sys/class/led/leds/beaglebone:green/usr0 should run. This file is on the localhost that is hosting the page on the local LAN via Apache2, I’m trying just to run a printf before but I couldn’t yet.
When the button ON is pressed, ECHO 1 > /sys/class/led/leds/beaglebone:green/usr0 should run. This file is on the localhost that is hosting the page on the local LAN via Apache2, I’m trying just to run a printf before but I couldn’t yet.
You can’t execute local commands directly from JavaScript. What you need to do is register a handler for a URI scheme that runs the program, then follow a link that uses that URL. That’s how things like Zoom links work. For security reasons, the user has to authorize this.
You can use a JavaScript runtime environment like Node.js or Deno, PHP or CGI. There are many other options, but you asked for JavaScript and you are using Apache.
What you can also if you run your page on an Apache localhost is to send an Ajax call to a PHP script that can make a
systemcall. For obvious reasons be careful that the script only do a pre-defined system call, I wouldn’t inject a user input in there personnally. And I prefer to do it when my localhost is isolated from the web