The MONGO shell is a JavaScript interface used to connect MongoDB, providing users with the means to query and manipulate data in MongoDB, and to manage MongoDB.
start and automatically connect to a MongoDB instance:The default installation in "/usr/bin/", with "which" command can be viewed to: # which Mongo/usr/bin/mongo
Tags: man SSI onchange returns control following ROR scripts LuaYou can write scripts for the MONGO Shell in JavaScript this manipulate data in MongoDB or perform administrative Operation. For more information about the MONGO Shell, see the Running. js files via a MONGO
MongoDB BSON provides support for additional data types than JSON. Drivers provide native support for these data types in host languages and the MONGO Shell also provides several h Elper classes to support the use of these data types in the MONGO JavaScript Shell. See the Extended JSON Reference for additional informat
In addition to the documentation in the MongoDB Manual, the MONGO Shell provides some additional information in I TS "Online" Help system. This document provides a overview of accessing this Help information.Command line HelpThe list of options and help for starting the MONGO shell with the --help option from the comma
Customize the PromptModify the content of the prompt by setting the variable prompt in the MONGO shell. The promptvariable can hold strings as well as JavaScript code. If prompt holds a function that returns a string, the MONGO can display dynamic information in each prompt.You can add the logic for the prompt in the. mongorc.js file to set the prompt each time y
"Go" couldn't connect to server 127.0.0.1: 27017 at src/mongo/shell/mongo. js: 145, "go" 27017
Couldn't connect to server 127.0.0.1: 27017 at src/mongo/shell/mongo. js: 145. For more information, see.
It should be because the ins
Recently, I started to learn how to install Mongo in windows. It is not difficult to perform this operation. I still use it in Linux. But refer to some documents after installation. The title error was found when Mongo was started.
Finally, this problem is solved by setting the path again.
Solution: Enter the following command
[root@localhost mongodb]# ./bin/mongod -dbpath=/data/db
Then, the following page
Today, at the start of the MONGO when there was a mistake, my win7 environment.
E:\server>mongo
MongoDB Shell version:2.4.5-pre-
connecting to:test
Mon Sep 13:35:05.335 JavaScript Execution Failed:Error:couldn ' t connect to
server 127.0.0.1:27017 at src/mongo/shell/mon
Tags: keyword mini pretty one prompt racket local ram resIntroductionThe MONGO Shell is a interactive JavaScript interface to MongoDB. You can use the MONGO Shell to query and update data as well as perform administrative operations. The MONGO
Customize the Prompt Custom tipsModify the content of the prompt by setting the variable in the prompt mongo shell. The prompt variable can hold strings as well as JavaScript code. If prompt holds a function that returns a string, the mongo can display dynamic information in each prompt.You can add the logic for the prompt in the. mongorc.js file to set the promp
Mongo client Common commands 1. database related commands 1showdbs list all databases 2usememo Use Database memo. Even if the database does not exist, it can be executed, but the database will not be created immediately. The database will be created only when insert and other operations are executed. www.2cto. com3showcollections
Following the previous article, this article is mainly implemented by the C # version of Mongo map-Reduce. If you are not familiar with the C # driver, it doesn't matter. The MongoDB official website has a good getting started article, you will soon learn how to write the Mongo program in C #, instead of entering commands on the console every day. Getting Started
-i686-2.0.8.tgz redis-1.2.6.tar.gz redis-2.6.6.tar.gz src etc gcc-4.1.2.tar.g Z include leveldb-1.7.0 libexec mongodb-linux-i686-2.2.2.tgz redis-2.4.14 sbin Games leveldb-1.5.0 leveldb-1.7.0.tar.gz MongoDB redis-1.2.6 redis-2.4.14.tar.gz Share [root@local Host local]# CD MongoDB [root@localhost mongodb]# LS bin db gnu-agpl-3.0 logs README third-party-notices [Root@localh OST mongodb]# CD logs [root@localhost logs]# ls [root@localhost logs]# ls [root@localhost logs]# [root@localhost
logs]
Tags: User format limit query handle for REM SEQ statThe Db.collection.find () method returns a cursor. To access the documents, you need to iterate the cursor. However, in the MONGO Shell, if the returned cursor was not assigned to a variable using the varkeyword, Then the cursor was automatically iterated up-to-the-print up-to-the-first documents in the results. The following examples describe ways to man
MONGO Shell startup configuration file. Mongorc.js (ii)If you have a. mongorc.js file under your home directory, he will run automatically when you start the shell. Use it to initialize any helper methods you use frequently and delete methods that you do not want to accidentally manipulate.For example, you do not want to use the default Dropdatabase () method, an
Tags: LSP mongodb blog modified long integer using str gesThe MongoDB data types are as follows:
Type
corresponding numbers
Alias
Description
Double1
1
Double
String
2
String
Object
3
Object
Array
4
Array
Binary data
5
Bindata
Undefined
6
Undefined
Deprecated
ObjectId
7
Turn from: http://hi.baidu.com/zwfec/item/3cfecfabafda3a258819d38b
Today, look at the server, found that Mongod start not up, prompted
Sun June 2 12:27:02 error:couldn ' t connect to server 127.0.0.1:27017 src/mongo/shell/mongo.js:91
Error
Look up the solution on the Internet, most people say set up dbpath, this is to solve the problem, but not to find the root cause of the problem,
The root of the prob
Mysql, sqlsever, oracle, redis, mongo, postgres and other database backup and recovery commands, sqlseverredis
The following is a simple example of how to back up and restore each database. For more detailed parameters and configurations, refer to relevant information.
I. mysql:
Parameter description:
$ User
$ Password
$ Targethost
$ Port
$ Charset
$ Dbname
$ Table
$ Filename
DemandWhen writing gadgets, you often encounter the need to check things out of MongoDB, because you want to use it in conjunction with other bash toolchain, so the best way to do this is to execute the query on the shell and then pipe it to the next tool.SchemeFortunately for MONGO to do is very convenient, only need to use MONGO--eval can. Example 1:192.168. 1.
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.