How to return Mongodb js return value to shell script

Question

I m getting started with MongoDb scripting. My requirement is to query the mongodb for a process status and based on it kick start another process, in shell script. I ve written the following js to query and return the value from mongodb :

var statusValue=db.Collections.find({"Name":"UV"},{Status:1,_id:0}).sort({Sequence:-1}).limit(1).map( function(u) { return u.Status; } );

print (statusValue);

I call this js from a shell script. Is there a way to return the value of 'statusValue' to the calling shell?

William Bao · Accepted Answer · 2013-05-20 11:27:35Z

1

Use "--eval" option to get return value. For example: return=`mongo localhost/test --quiet --eval 'db.version()'` Replace "db.version()" with your own expression. Refer to the offical document.

answered May 20, 2013 at 11:27

William Bao

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