mongoexport ... --query '{"start_time":{"$gte":new Date(1351641600000),"$lt":new Date(1351728000000)}}' --out 20121031.json
*the last three digits is #operations within a given second.
mongoexport ... --query '{"start_time":{"$gte":new Date(1351641600000),"$lt":new Date(1351728000000)}}' --out 20121031.json
*the last three digits is #operations within a given second.