Getting Error EBUSY: resource busy or locked

Question

Trying to run a Nodejs app to test Raspberry 3 B + Gpio Onoff Module but when i am trying to run the app getting this Error

fs.js:114
throw err;

Error: EBUSY: r         


        

Answer 1

var onoff = require('onoff');
var Gpio = onoff.Gpio,
    led = new Gpio(4, 'out'),
    interval;
interval = setInterval(function () {
    var value = (led.readSync() + 1) % 2;
    led.write(value, function () {
        console.log("Changed LED state to: " + value);
    });
}, 2000);
process.on('SIGINT', function () {
    clearInterval(interval);
    led.writeSync(0);
    led.unexport();
    console.log('Bye, bye!');
    process.exit();
});

Answer 2

Find the packager-info.json file inside the .expo folder and delete it. Now restart it by expo start command.

Answer 3

I know this is barley advice since its so obvious but I spent over an hour on this then restarted my computer, problem fixed!

just a reminder the most obvious solutions are sometimes the right solutions.

All the other solutions posted about this problem didnt work for me. Maybe because my problem was a log file was being locked which prevented me from using npm at all. The log file didn't even show up in the directory it was supposed to be in.

Answer 4

There are many answers on GitHub regarding this issue.

• Some says npm cache clean this command executing on terminal solved the problem.

• Others recommend to delete the entire directory your app is the folder in and re-install the packages and then try running the program.

• Some also says that It is caused by the anti-malware software and recommend to disable it while running the program.

GitHub issue link: https://github.com/npm/npm/issues/13461

If it doesn't solve the issue, just change the GPIO pin to let's say 23 in coding and don't forget to physically replace LED from 4 to 23 too.

Answer 5

If you are on windows.

Try running your bash window as Administrator.

For example, in my case, I was using git bash.

Search on windows "Gitbash" (or any other command-line window) -> Right-click -> Run as Administrator. Worked for me.

Answer 6

Some says npm cache clean this command is not properly work.

we try uninstall nodejs and reinstall nodejs

after properly work