export mongo to csv file

export.js

// mongo <host>/<dbname> -u <username> -p <password> export.js > out.csv
// mongo local --quiet export.js > out.csv

print("id, in_reply_to_status_id, user_id");
db.sample_stream.find({}, { 'tweet.id_str': 1, 'tweet.in_reply_to_status_id_str': 1 , 'tweet.user.id_str': 1, _id: 0}).forEach(function(doc){
  print(doc.tweet.id_str + "," + doc.tweet.in_reply_to_status_id_str + "," + doc.tweet.user.id_str);
});