Executing Shell Commands with Node.js

exec.js

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}`);
  
});

spawn.js

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

const ls = spawn("ls", ["-la"]);

ls.stdout.on("data", data => {
  console.log(`stdout: ${data}`);
});

ls.stderr.on("data", data => {
  console.log(`stderr: ${data}`);
});

ls.on('error', (error) => {
  console.log(`error: ${error.message}`);
});

ls.on("close", code => {
  console.log(`child process exited with code ${code}`);
});