Running a shell command from Node.js without buffering output

Question

I\'m trying to launch a shell command from Node.js, without redirecting that command\'s input and output -- just like shelling out to a command using a shell script, or

Answer 1

You can replace exec by spawn and use the shell syntax simply with:

const {spawn} = require ('child_process');
const cmd = 'ls -l | grep test | wc -c';
const p = spawn (cmd, [], {shell: true});

p.stdout.on ('data', (data) => {
  console.log (data.toString ());
});

The magic is just {shell: true}.