MongoDb shell scripting

Question

Do you know if it is possible to get a list of databases(like 'show dbs' in console) from javascript. I want to drop all databases from mongo via javascript file (mongo admin.js), but i can't find a way to list all databases...

Thx

I'm trying to prepare simple script but i can't find out how i can change db from script. Here is the sample javascript script. It always fails on command "use". I tried with db.eval and eval but it fails.

print(db.getMongo().getDBNames());
var environments = db.getMongo().getDBNames()
for(var environmentIndex in environments){
    print(environments[environmentIndex])   
    eval("use staging");
    //db.dropDatabase();
}

Apparently it's better practice to use a "sequential" for loop instead. See http://stackoverflow.com/a/3010848/156060 . Here's some JavaScript I just used to drop all databases in my MongoDB server: https://gist.github.com/1754355 — Adam Monsen, Feb 06 '12 at 19:47

pingw33n · Accepted Answer · 2011-01-19T11:01:01.037

13

Use db.adminCommand('listDatabases'). For other commands see http://www.mongodb.org/display/DOCS/List+of+Database+Commands

EDIT:

In util.js use dbname is defined as:

shellHelper.use = function( dbname ){
    db = db.getMongo().getDB( dbname );
    print( "switched to db " + db.getName() );
}

edited Jan 19 '11 at 11:01

answered Jan 18 '11 at 19:03

pingw33n

12,292
2
37
38

yes, thx. But how i can switch to different db via script? I updated description with sample script. – Jan 19 '11 at 10:25
@pingw33n Can we run the mongodb commands as scripts in bash/linux without having mongo shell installed on machine? – Ravi Teja Muddada Aug 21 '21 at 06:32

score 7 · Answer 2 · answered Sep 10 '12 at 14:29

7

http://www.mongodb.org/display/DOCS/Scripting+the+shell

db = db.getSiblingDB("otherdb") //same as use otherdb

answered Sep 10 '12 at 14:29

csgwro

181
2
5

MongoDb shell scripting

2 Answers2