mongo.md

Pretty-Printing

Add the following line to your $HOME/.mongorc.js file to enable pretty print globally by default:

DBQuery.prototype._prettyShell = true

Searching in Mongo

To search for a substring in a particular field run the following in the Mongo shell:

db.xxxxxx.findOne({"field" : {$regex : ".*string.*"}});

Running via Brew (Mac OS X)

From the output of Homebrew:

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
Or, if you don't want/need launchctl, you can just run:
    mongod --config /usr/local/etc/mongod.conf

Comparing Two Fields in a Document

If the where clause is the comparison, you can use a nested JavaScript comparator function:

db.fr_sessions.find("this.created > this.end_date")