Example of using SUGHUP with Node to reload config

handle-sighup.js

// Example /tmp/srv.conf.json
// {"name":"bill"}

var fs = require('fs');

var config = {
    name: ''
};

function loadConfig() {
    fs.readFile('/tmp/srv.conf.json', 'utf8', function(err, data) {
        if (err) throw err;
        config = JSON.parse(data);
        console.log('Loaded config');
    });
}

loadConfig();

setInterval(function() {
    console.log('Name:', config.name);
}, 1000);

process.stdin.resume();

process.on('SIGHUP', loadConfig);