Shulou(Shulou.com)06/01 Report--

Time can be derived from ObjectId

time region

["2014-01-01 00:00:00","2015-11-15 00:00:00")

In the mongo shell, generate the id of this area based on time

begin = new Date("2014-01-01 00:00:00").getTime()/1000

begin = begin.toString(16)

begin = begin + new Array(17).join("0")

52c2ea 00000000000

end = new Date("2015-11-15 00:00:00").getTime()/1000

end = end.toString(16)

end = end + new Array(17).join("0")

56475 a800000000000

start data

mongodump --host 127.0.0.1:10000 -d pics -c fs.files -q '{_id:{ $gte:ObjectId("52c2ea000000000000000000"),$lt:ObjectId("56475a800000000000000000")}}' -o dump_pics/

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