create .env nodejs code example

Example 1: windows how to set process.env variables

set NODE_ENV=production

Example 2: set a variable in express.js

app.set('oneSetting', 'one');
app.set('twoSetting', 'two');
app.set('view engine','jade');

console.log(app.settings.oneSetting);
console.log(app.settings.twoSetting);
console.log(app.settings['view engine']);