Windows再次操作mongo及相关命令（终端命令行）

> use test
switched to db test
> db.student.insert({sname:'jack'})
WriteResult({ "nInserted" : 1 })
> db.student.find()
{ "_id" : ObjectId("5b1bcea9d11420d81c574a62"), "sname" : "jack" }
> db.student.insert({sname:'jone',age:18,dept:'comp.',weight:48})
WriteResult({ "nInserted" : 1 })
> db.student.count()
2
> db.student.find({sname:'jone'})
{ "_id" : ObjectId("5b1bcf31d11420d81c574a63"), "sname" : "jone", "age" : 18, "dept" : "comp.", "weight" : 48 }
> db.student.update({sanem:'jack'},{$set:{city:'tianjin'}})
WriteResult({ "nMatched" : 0, "nUpserted" : 0, "nModified" : 0 })
> db.student.remove({sanme:'jone'})
WriteResult({ "nRemoved" : 0 })
> db.student.remove({sanme:'jack'})
WriteResult({ "nRemoved" : 0 })
> db.student.remove({sname:'jack'})
WriteResult({ "nRemoved" : 1 })
> db.student.remove({sname:'jone'})
WriteResult({ "nRemoved" : 1 })
> db.student.insert({sname:'jack'})
WriteResult({ "nInserted" : 1 })
> db.student.update({sname:'jack'},{$set:{city:'tianjin'}})
WriteResult({ "nMatched" : 1, "nUpserted" : 0, "nModified" : 1 })
> db.student.remove({sname:'jack'})
WriteResult({ "nRemoved" : 1 })
> for(i=0;i<2000;i++){
... db.student.insert({num:i})
... }
WriteResult({ "nInserted" : 1 })
> db.student.count()
2000
> db.student.find({num:{"$gte":20,"$lte":30}})
{ "_id" : ObjectId("5b1bd15dd11420d81c574a79"), "num" : 20 }
{ "_id" : ObjectId("5b1bd15dd11420d81c574a7a"), "num" : 21 }
{ "_id" : ObjectId("5b1bd15dd11420d81c574a7b"), "num" : 22 }
{ "_id" : ObjectId("5b1bd15dd11420d81c574a7c"), "num" : 23 }
{ "_id" : ObjectId("5b1bd15dd11420d81c574a7d"), "num" : 24 }
{ "_id" : ObjectId("5b1bd15dd11420d81c574a7e"), "num" : 25 }
{ "_id" : ObjectId("5b1bd15dd11420d81c574a7f"), "num" : 26 }
{ "_id" : ObjectId("5b1bd15dd11420d81c574a80"), "num" : 27 }
{ "_id" : ObjectId("5b1bd15dd11420d81c574a81"), "num" : 28 }
{ "_id" : ObjectId("5b1bd15dd11420d81c574a82"), "num" : 29 }
{ "_id" : ObjectId("5b1bd15dd11420d81c574a83"), "num" : 30 }
> function test(a){
... return a+1;
... }
> test(1)
2> use test
switched to db test
> db.student.ins