os.execCommand nodejs code example

Example 1: node run shell command

// You can use 'exec' this way

const { exec } = require("child_process");

exec("ls -la", (error, stdout, stderr) => {
    if (error) {
        console.log(`error: ${error.message}`);
        return;
    }
    if (stderr) {
        console.log(`stderr: ${stderr}`);
        return;
    }
    console.log(`stdout: ${stdout}`);
});

Example 2: how to return when child process is complete in node js

var execSync = require('exec-sync');

var user = execSync('python celulas.py');