nodejs command line module not giving stdout

Question

I have set up a command line node module and when I run it one of the tasks is to start up the server and log to the console. However I find that although it starts up my server fine, it does not send the output to the console.

#! /usr/bin/env node

var userArgs = process.argv.slice(2);
var searchPattern = userArgs[0];

if(userArgs[0] === "start"){

    var exec = require('child_process').exec;

    exec('node ./server.js', 
        function(err, stdout, stderr) {
            console.log('stdout: ', stdout);
            console.log('stderr: ', stderr);
            if (error !== null) {
                console.log('exec error: ', error);
            }
        }
    );
}

So if I npm link my module then run mymodule start it starts the server fine but as I mentioned no output to the console.

Whereas if I run simply node server.js I get the output which is server listening on http://localhost:5000.

dannypaz · Accepted Answer · 2015-08-06 06:37:39Z

1

From the documentation, regarding the callback you are passing to 'exec'

'callback' - Function called with the output when process terminates

From what I understand, the process has to be terminated before you see 'stdout:' and 'stderr:' (you would have to stop the node process).

answered Aug 6, 2015 at 6:37

dannypaz

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