How to run cli/unix commands from nodejs scripts?
There are two ways to do this:
child_process.exec(command[, options][, callback])
// ls.js
const { exec } = require('child_process');
exec('ls -lh /usr', (error, stdout, stderr) => {
if (error) {
console.error(`exec error: ${error}`);
return;
}
console.log(`stdout: ${stdout}`);
console.log(`stderr: ${stderr}`);
});
From CLI,
$ npm run-script ls
child_process.spawn(command[, args][, options])
// ls.js
const { spawn } = require('child_process');
const ls = spawn('ls', ['-lh', '/usr']);
ls.stdout.on('data', (data) => {
console.log(`stdout: ${data}`);
});
ls.stderr.on('data', (data) => {
console.log(`stderr: ${data}`);
});
ls.on('close', (code) => {
console.log(`child process exited with code ${code}`);
});
From CLI,
$ npm run-script ls