MongoDB exports query results to file examples

dump.js

var c = db.user.find({nick_name:{$exists:true,$ne:''}}).limit(100);

while(c.hasNext()) {

    printjson(c.next());

}

mongo 192.168.2.201:41211/dc_user dump.js > feed.json

The specified data from the user table of the dc_user library is stored in feed.json as json.

Note: printjson outputs formatted json text to facilitate viewing the data, but you cannot import mongoimport, if you need to import printjson instead of printjsononeline.