gistfile1.txt

$ curl -XPUT localhost:9200/test-idx/doc/1 -d '{"foo": "BaR"}'
{"ok":true,"_index":"test-idx","_type":"doc","_id":"1","_version":1}

$  curl  "localhost:9200/test-idx/doc/_search?q=baR&pretty"     
{
  "took" : 3,
  "timed_out" : false,
  "_shards" : {
    "total" : 5,
    "successful" : 5,
    "failed" : 0
  },
  "hits" : {
    "total" : 1,
    "max_score" : 1.0,
    "hits" : [ {
      "_index" : "test-idx",
      "_type" : "doc",
      "_id" : "1",
      "_score" : 1.0, "_source" : {"foo": "BaR"}
    } ]
  }
}