sh.status()

mongos> sh.status({"verbose":1})sh.status({"verbose":1})
--- Sharding Status --- 
  sharding version: {
        "_id" : 1,
        "minCompatibleVersion" : 5,
        "currentVersion" : 6,
        "clusterId" : ObjectId("57199835d058c00f4d3281a8")
}
  shards:
        {  "_id" : "shard0000",  "host" : "localhost:30000" }
        {  "_id" : "shard0001",  "host" : "localhost:30001" }
        {  "_id" : "shard0002",  "host" : "localhost:30002" }
  balancer:
        Currently enabled:  no
        Currently running:  no
        Failed balancer rounds in last 5 attempts:  0
        Migration Results for the last 24 hours: 
                No recent migrations
  databases:
        {  "_id" : "admin",  "partitioned" : false,  "primary" : "config" }
        {  "_id" : "test",  "partitioned" : true,  "primary" : "shard0001" }
                test.users
                        shard key: { "username" : 1 }
                        chunks:
                                shard0001       22
                        { "username" : { "$minKey" : 1 } } -->> { "username" : "user1421" } on : shard0001 Timestamp(1, 0) 
                        { "username" : "user1421" } -->> { "username" : "user18424" } on : shard0001 Timestamp(1, 1) 
                        { "username" : "user18424" } -->> { "username" : "user22638" } on : shard0001 Timestamp(1, 2) 
                        { "username" : "user22638" } -->> { "username" : "user26852" } on : shard0001 Timestamp(1, 3) 
                        { "username" : "user26852" } -->> { "username" : "user31065" } on : shard0001 Timestamp(1, 4) 
                        { "username" : "user31065" } -->> { "username" : "user3528" } on : shard0001 Timestamp(1, 5) 
                        { "username" : "user3528" } -->> { "username" : "user39494" } on : shard0001 Timestamp(1, 6) 
                        { "username" : "user39494" } -->> { "username" : "user43707" } on : shard0001 Timestamp(1, 7) 
                        { "username" : "user43707" } -->> { "username" : "user47921" } on : shard0001 Timestamp(1, 8) 
                        { "username" : "user47921" } -->> { "username" : "user52134" } on : shard0001 Timestamp(1, 9) 
                        { "username" : "user52134" } -->> { "username" : "user56349" } on : shard0001 Timestamp(1, 10) 
                        { "username" : "user56349" } -->> { "username" : "user60562" } on : shard0001 Timestamp(1, 11) 
                        { "username" : "user60562" } -->> { "username" : "user64777" } on : shard0001 Timestamp(1, 12) 
                        { "username" : "user64777" } -->> { "username" : "user68991" } on : shard0001 Timestamp(1, 13) 
                        { "username" : "user68991" } -->> { "username" : "user73203" } on : shard0001 Timestamp(1, 14) 
                        { "username" : "user73203" } -->> { "username" : "user77418" } on : shard0001 Timestamp(1, 15) 
                        { "username" : "user77418" } -->> { "username" : "user81631" } on : shard0001 Timestamp(1, 16) 
                        { "username" : "user81631" } -->> { "username" : "user85846" } on : shard0001 Timestamp(1, 17) 
                        { "username" : "user85846" } -->> { "username" : "user90059" } on : shard0001 Timestamp(1, 18) 
                        { "username" : "user90059" } -->> { "username" : "user94273" } on : shard0001 Timestamp(1, 19) 
                        { "username" : "user94273" } -->> { "username" : "user98488" } on : shard0001 Timestamp(1, 20) 
                        { "username" : "user98488" } -->> { "username" : { "$maxKey" : 1 } } on : shard0001 Timestamp(1, 21) 

mongos>