脚本内容如下：
bash-4.2$ cat test.sh
#!/bin/sh
mongo test  --eval "db.books.find().limit(5);"

bash-4.2$ ./test.sh
MongoDB shell version: 3.2.7-39-g8da92ea
connecting to: test
{ "_id" : ObjectId("5770f0b3f5dedda2a1409934"), "x" : 4, "j" : 2 }
{ "_id" : ObjectId("5770f0b3f5dedda2a1409935"), "x" : 4, "j" : 3 }
{ "_id" : ObjectId("5770f0b3f5dedda2a1409936"), "x" : 4, "j" : 4 }
{ "_id" : ObjectId("5770f0b3f5dedda2a1409937"), "x" : 4, "j" : 5 }
{ "_id" : ObjectId("5770f0b3f5dedda2a1409938"), "x" : 4, "j" : 6 }