Haven't go to BBS, met a strange question today, just talking with you:

 
[zk: localhost: 2181 (CONNECTED) 4] RMR 
ZooKeeper - server host: port - the client - the configuration properties - file CMD args 
AddWatch [-m mode] path # optional mode is one of [PERSISTENT, PERSISTENT_RECURSIVE] 
- the default is PERSISTENT_RECURSIVE addauth scheme auth 
The close 
Config [-c] [- w] [-s] 
The connect host: port 
The create [-s] [e] [-c] [-t TTL] path [data] [acl] 
The delete version] [- v path 
Deleteall path [- b batch size] 
Delquota [-n | - b] path 
Get [-s] [- w] path 
GetAcl (-s) path 
GetAllChildrenNumber path 
GetEphemerals path 
The history 
Listquota path 
Ls [-s] [- w] [-r] path 
Printwatches on | off 
The quit 
Reconfig [-s] [- v version] [[- the file path] | [- members serverID=host: port1, port2, port3 
[,...]. | *]] [- add serverId=host: port1, port2, port3 [,...]] * [- remove serverId [...] *] redo cmdno 
Removewatches path [- c | | - d - a] [l] 
The set [-s] [-v version] path data 
SetAcl [-s] [-v version] [-r] path acl 
Setquota - n | - b val path 
The stat [] - w path 
Sync path 
Version 
Command not found: Command not found RMR 

Other commands, but a lack of RMR, you why?