p2-find2.js

var mongo = require('mongodb').MongoClient
mongo.connect('mongodb://localhost:27017/learnyoumongo', function(err, db) {
  // db gives access to the database
  var collection = db.collection('parrots')
   collection.find({
      age : {$gt: parseInt(process.argv[2])} 
    },
    {
      name: 1
    , age: 1
    , _id: 0
    }).toArray(function(err, documents) {
      if (err) console.log("ERROR")
      else {
        console.log(documents)
      }
      db.close();
    })
})

/* Solution
    var mongo = require('mongodb').MongoClient
    var age = process.argv[2]
    
    var url = 'mongodb://localhost:27017/learnyoumongo'
    
    mongo.connect(url, function(err, db) {
      if (err) throw err
      var parrots = db.collection('parrots')
      parrots.find({
        age: {
          $gt: +age
        }
      }, {
        name: 1
      , age: 1
      , _id: 0
      }).toArray(function(err, docs) {
        if (err) throw err
        console.log(docs)
        db.close()
      })
    })
*/