./mongo

[root@db02 bin]# ./mongo
MongoDB shell version: 2.0.4
connecting to: test
> help
        db.help()                    help on db methods
        db.mycoll.help()             help on collection methods
        rs.help()                    help on replica set methods
        help admin                   administrative help
        help connect                 connecting to a db help
        help keys                    key shortcuts
        help misc                    misc things to know
        help mr                      mapreduce

        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
        show logs                    show the accessible logger names
        show log [name]              prints out the last segment of log in memory, 'global' is default
        use <db_name>                set current database
        db.foo.find()                list objects in collection foo
        db.foo.find( { a : 1 } )     list objects in foo where a == 1
        it                           result of the last line evaluated; use to further iterate
        DBQuery.shellBatchSize = x   set default number of items to display on shell
        exit                         quit the mongo shell
>

> db.help()
DB methods:
        db.addUser(username, password[, readOnly=false])
        db.auth(username, password)
        db.cloneDatabase(fromhost)
        db.commandHelp(name) returns the help for the command
        db.copyDatabase(fromdb, todb, fromhost)
        db.createCollection(name, { size : ..., capped : ..., max : ... } )
        db.currentOp() displays the current operation in the db
        db.dropDatabase()
        db.eval(func, args) run code server-side
        db.getCollection(cname) same as db['cname'] or db.cname
        db.getCollectionNames()
        db.getLastError() - just returns the err msg string
        db.getLastErrorObj() - return full status object
        db.getMongo() get the server connection object
        db.getMongo().setSlaveOk() allow this connection to read from the nonmaster member of a replica pair
        db.getName()
        db.getPrevError()
        db.getProfilingLevel() - deprecated
        db.getProfilingStatus() - returns if profiling is on and slow threshold
        db.getReplicationInfo()
        db.getSiblingDB(name) get the db at the same server as this one
        db.isMaster() check replica primary status
        db.killOp(opid) kills the current operation in the db
        db.listCommands() lists all the db commands
        db.logout()
        db.printCollectionStats()
        db.printReplicationInfo()
        db.printSlaveReplicationInfo()
        db.printShardingStatus()
        db.removeUser(username)
        db.repairDatabase()
        db.resetError()
        db.runCommand(cmdObj) run a database command.  if cmdObj is a string, turns it into { cmdObj : 1 }
        db.serverStatus()
        db.setProfilingLevel(level,<slowms>) 0=off 1=slow 2=all
        db.shutdownServer()
        db.stats()
        db.version() current version of the server
        db.getMongo().setSlaveOk() allow queries on a replication slave server
        db.fsyncLock() flush data to disk and lock server for backups
        db.fsyncUnock() unlocks server following a db.fsyncLock()
>

> db.mycoll.help()
DBCollection help
        db.mycoll.find().help() - show DBCursor help
        db.mycoll.count()
        db.mycoll.dataSize()
        db.mycoll.distinct( key ) - eg. db.mycoll.distinct( 'x' )
        db.mycoll.drop() drop the collection
        db.mycoll.dropIndex(name)
        db.mycoll.dropIndexes()
        db.mycoll.ensureIndex(keypattern[,options]) - options is an object with these possible fields: name, unique, dropDups
        db.mycoll.reIndex()
        db.mycoll.find([query],[fields]) - query is an optional query filter. fields is optional set of fields to return.
                                                      e.g. db.mycoll.find( {x:77} , {name:1, x:1} )
        db.mycoll.find(...).count()
        db.mycoll.find(...).limit(n)
        db.mycoll.find(...).skip(n)
        db.mycoll.find(...).sort(...)
        db.mycoll.findOne([query])
        db.mycoll.findAndModify( { update : ... , remove : bool [, query: {}, sort: {}, 'new': false] } )
        db.mycoll.getDB() get DB object associated with collection
        db.mycoll.getIndexes()
        db.mycoll.group( { key : ..., initial: ..., reduce : ...[, cond: ...] } )
        db.mycoll.mapReduce( mapFunction , reduceFunction , <optional params> )
        db.mycoll.remove(query)
        db.mycoll.renameCollection( newName , <dropTarget> ) renames the collection.
        db.mycoll.runCommand( name , <options> ) runs a db command with the given name where the first param is the collection name
        db.mycoll.save(obj)
        db.mycoll.stats()
        db.mycoll.storageSize() - includes free space allocated to this collection
        db.mycoll.totalIndexSize() - size in bytes of all the indexes
        db.mycoll.totalSize() - storage allocated for all data and indexes
        db.mycoll.update(query, object[, upsert_bool, multi_bool])
        db.mycoll.validate( <full> ) - SLOW
        db.mycoll.getShardVersion() - only for use with sharding
        db.mycoll.getShardDistribution() - prints statistics about data distribution in the cluster
>