How to run bash commands from Node.js and get result

Question

I want to run a bash script on my server using a Node js function and get the result back in Node through a callback. Sample script is as follows -

grep -c "eventName" 111data.csv

Is this possible? I looked at the following module but looks very complex. Does anyone know of a way this can be done?

https://www.npmjs.com/package/bashjs

Why not use exec and child_process? nodejs.org/api/child_process.html — Murtaza Haji
– Murtaza Haji, Commented Jun 30, 2020 at 23:30

LEQADA · Accepted Answer · 2020-06-30 23:28:54Z

3

You can execute a command

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

const grep = exec('grep -c "eventName" 111data.csv', function (error, stdout, stderr) {
  if (error) {
    console.log(error.stack);
    console.log('Error code: '+error.code);
    console.log('Signal received: '+error.signal);
  }
  console.log('Child Process STDOUT: '+stdout);
  console.log('Child Process STDERR: '+stderr);
});

grep.on('exit', function (code) {
  console.log('Child process exited with exit code '+code);
});

Just modified the example from the Node.js article. Didn't actually test it

answered Jun 30, 2020 at 23:28

LEQADA

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