from any directory on host machine, export entire db
$ mongodump -db myDatabaseName #OSX
$ mongodump --db myDatabaseName -o C:\Users\someuser\Desktop #win
now copy the /dump folder to destination machine. from the destination machine:
$ cd ~/path/to/dump/folder
$ mongorestore
launch mongo into your db
$ mongo myDbName
in mongo, call dropDatabase to erase db permanently
> db.Dropdatabase()
launch mongo into your db
$ mongo myDbName
show all collections inside this db
> show collections
show all databases on this computer
> show dbs
show all items in a collection, format them pretty
> db.collection.find().pretty()
search for items in a collection that match a specific query, format results pretty
> db.collection.find({key:"val"}).pretty()
Install Homebrew (mac only)
$ ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
Install mongodb
$ brew install mongodb
Set up launchctl to auto start mongod
$ ln -sfv /usr/local/opt/mongodb/*.plist ~/Library/LaunchAgents
/usr/local/opt/mongodb/ is a symlink to /usr/local/Cellar/mongodb/x.y.z (e.g., 2.4.9)
You can use launchctl to start and stop mongod
$ launchctl load ~/Library/LaunchAgents/homebrew.mxcl.mongodb.plist
$ launchctl unload ~/Library/LaunchAgents/homebrew.mxcl.mongodb.plist
You can also more conveniently use brew to start, stop, and verify service status
$ brew services list | grep mongodb
$ brew services start mongodb
$ brew services stop mongodb
uninstall mongodb
$ brew uninstall mongodb
update homebrew
$ brew update
install mongodb
$ brew install mongodb
To have launchd start mongodb at login:
$ ln -sfv /usr/local/opt/mongodb/*.plist ~/Library/LaunchAgents
Then to load mongodb now:
$ launchctl load ~/Library/LaunchAgents/homebrew.mxcl.mongodb.plist
$ sudo mkdir -p /data/db/
$ sudo chown $USER /data/db
$ mongod --dbpath /data/db