mongo.js

var userSchema = mongoose.Schema({
    "id": Number,
    "username": String,
    "paswod": String,
    "name": String,
    "last_name": String

});

var user = mongoose.model('users', userSchema);

// to fetch all users 
user.find(function (err, user) {
    if (err) return console.error(err);
    console.log(user);
});

// to get specific user
user.find({ name: /^mmustafa/ }, function (err, user) {
    if (err) return console.error(err);
    console.log(user);
});