mongodb之常用命令

  
    
 
  
    
 
  
    
 
   
     
 
      

        help show help 
      
 
      

        show dbs show database names 
      
 
      

        show collections show collections in current database 
      
 
      

        show users show users in current database 
      
 
      

        show profile show most recent system.profile entries with time >= 1ms 
      
 
      

        use <db name> set curent database to <db name> 
      
 
      
 
      
 
      

        db.addUser (username, password) 
      
 
      

        db.removeUser(username) 
      
 
      
 
      
 
      

        db.cloneDatabase(fromhost) 
      
 
      

        db.copyDatabase(fromdb, todb, fromhost) 
      
 
      

        db.createCollection(name, { size : ..., capped : ..., max : ... } ) 
      
 
      
 
      
 
      

        db.getName() 
      
 
      

        db.dropDatabase() 
      
 
      
 
      
 
      // runs the collstats] command on each collection in the database 
      

        db.printCollectionStats() 
      
 
      
 
      
 
      

        db.currentOp() displays the current operation in the db 
      
 
      

        db.killOp() kills the current operation in the db 
      
 
      
 
      
 
      

        db.getProfilingLevel() 
      
 
      

        db.setProfilingLevel(level) 0=off 1=slow 2=all 
      
 
      
 
      
 
      

        db.getReplicationInfo() 
      
 
      

        db.printReplicationInfo() 
      
 
      

        db.printSlaveReplicationInfo() 
      
 
      

        db.repairDatabase() 
      
 
      
 
      
 
      

        db.version() current version of the server 
      
 
      
 
      
 
      

        db.shutdownServer() 
      
 
     
  
    
 
  
    
 
  
    
 
  
    

     
   ======ddl
  
    
 
  
    
 
   
     
 
      

        db.foo.drop() drop the collection 
      
 
      

        db.foo.dropIndex(name) 
      
 
      

        db.foo.dropIndexes() 
      
 
      

        db.foo.getIndexes() 
      
 
      

        db.foo.ensureIndex(keypattern,options) - options object has these possible 
      
 
      

        fields: name, unique, dropDups 
      
 
      
 
      
 
      

        db.foo.find( [query] , [fields]) - first parameter is an optional 
      
 
      

        query filter. second parameter 
      
 
      

        is optional 
      
 
      

        set of fields to 
      
 
      return 
      

        . 
      
 
      

        e.g. db.foo.find( 
      
 
      

        { x : 77 } , 
      
 
      

        { name : 1 , x : 1 } ) 
      
 
      

        db.foo.find(...).count() 
      
 
      

        db.foo.find(...).limit(n) 
      
 
      

        db.foo.find(...).skip(n) 
      
 
      

        db.foo.find(...).sort(...) 
      
 
      

        db.foo.findOne([query]) 
      
 
      
 
      
 
      

        db.foo.getDB() get DB object associated with collection 
      
 
      
 
      
 
      

        db.foo.count() 
      
 
      

        db.foo.group( { key : ..., initial: ..., reduce : ...[, cond: ...] } ) 
      
 
      
 
      
 
      

        db.foo.renameCollection( newName ) renames the collection 
      
 
      
 
      
 
      

        db.foo.stats() 
      
 
      

        db.foo.dataSize() 
      
 
      

        db.foo.storageSize() - includes free space allocated to 
      
 
      this 
      

        collection 
      
 
      

        db.foo.totalIndexSize() - size in bytes of all the indexes 
      
 
      

        db.foo.totalSize() - storage allocated 
      
 
      for 
      

        all data and indexes 
      
 
      

        db.foo.validate() (slow) 
      
 
      
 
      
 
      

        db.foo.insert(obj) 
      
 
      

        db.foo.update(query, object[, upsert_bool]) 
      
 
      

        db.foo.save(obj) 
      
 
      

        db.foo.remove(query) - remove objects matching query 
      
 
      

        remove({}) will remove all 
      
 
     
 
   
     
 
      粘贴自： <http://www.mongodb.org/display/DOCS/DBA+Operations+from+the+Shell>