mongo note

login as Admin
mongo -u peter -p Asdf12345678 --authenticationDatabase admin


Delete whole table (collection)

db.ShareCode.drop()

Create Admin
sudo mongo admin --username root --password PASSWORD
show dibs
use admin
db.createUser
dbcreateUser({
user: "USERNAME",
pwd: "PASSWORD",
roles: ["root"]
})

mongo -u peter -p Asdf12345678 --authenticationDatabase admin


mongodump --host 23.99.110.206 --port 27017 -u peter -p Asdf12345678 --out data/backup/

Backup By mongodump

mongodump --host localhost --port 27017 -u peter -p Asdf12345678 --out data/backup/

Restore By mongorestore

mongorestore --host localhost --port 27017 -u peter -p Asdf12345678 data/backup

sudo service mongod start

Open extended connect

command:

db

use dbNAME

show dbNAME

show dbs

show tables

db.TABLES.find()

db.TABLES.find({"text":"abc"})

db.collectionsName.find()

Remove Data Directories.

sudo rm -r /var/log/mongodb
sudo rm -r /var/lib/mongodb

-The MongoDB instance stores its data files in /var/lib/mongodb 

-its log files in/var/log/mongodb by default

-runs using the mongodb user account. 

-You can specify alternate log and data file directories in /etc/mongod.conf. 

Error 

Failed global initialization: BadValue Invalid or no user locale set. Please ensure LANG and/or LC_* environment variables are set correctly.

Answer 

export LC_ALL=C