[root@m1 ~]# zkCli.sh 
Connecting to localhost:2181
2017-03-22 07:06:47,239 [myid:] - INFO  [main:Environment@100] - Client environment:zookeeper.version=3.4.9-1757313, built on 08/23/2016 06:50 GMT
2017-03-22 07:06:47,242 [myid:] - INFO  [main:Environment@100] - Client environment:host.name=m1
2017-03-22 07:06:47,242 [myid:] - INFO  [main:Environment@100] - Client environment:java.version=1.8.0_121
2017-03-22 07:06:47,245 [myid:] - INFO  [main:Environment@100] - Client environment:java.vendor=Oracle Corporation
2017-03-22 07:06:47,245 [myid:] - INFO  [main:Environment@100] - Client environment:java.home=/usr/local/soft/jdk/jre
2017-03-22 07:06:47,245 [myid:] - INFO  [main:Environment@100] - Client environment:java.class.path=/usr/local/soft/zookeeper-3.4.9/bin/../build/classes:/usr/local/soft/zookeeper-3.4.9/bin/../build/lib/*.jar:/usr/local/soft/zookeeper-3.4.9/bin/../lib/slf4j-log4j12-1.6.1.jar:/usr/local/soft/zookeeper-3.4.9/bin/../lib/slf4j-api-1.6.1.jar:/usr/local/soft/zookeeper-3.4.9/bin/../lib/netty-3.10.5.Final.jar:/usr/local/soft/zookeeper-3.4.9/bin/../lib/log4j-1.2.16.jar:/usr/local/soft/zookeeper-3.4.9/bin/../lib/jline-0.9.94.jar:/usr/local/soft/zookeeper-3.4.9/bin/../zookeeper-3.4.9.jar:/usr/local/soft/zookeeper-3.4.9/bin/../src/java/lib/*.jar:/usr/local/soft/zookeeper-3.4.9/bin/../conf:.:/usr/local/soft/jdk/lib/dt.jar:/usr/local/soft/jdk/lib/tools.jar
2017-03-22 07:06:47,245 [myid:] - INFO  [main:Environment@100] - Client environment:java.library.path=/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
2017-03-22 07:06:47,246 [myid:] - INFO  [main:Environment@100] - Client environment:java.io.tmpdir=/tmp
2017-03-22 07:06:47,246 [myid:] - INFO  [main:Environment@100] - Client environment:java.compiler=<NA>
2017-03-22 07:06:47,246 [myid:] - INFO  [main:Environment@100] - Client environment:os.name=Linux
2017-03-22 07:06:47,246 [myid:] - INFO  [main:Environment@100] - Client environment:os.arch=amd64
2017-03-22 07:06:47,246 [myid:] - INFO  [main:Environment@100] - Client environment:os.version=2.6.32-431.el6.x86_64
2017-03-22 07:06:47,246 [myid:] - INFO  [main:Environment@100] - Client environment:user.name=root
2017-03-22 07:06:47,246 [myid:] - INFO  [main:Environment@100] - Client environment:user.home=/root
2017-03-22 07:06:47,246 [myid:] - INFO  [main:Environment@100] - Client environment:user.dir=/root
2017-03-22 07:06:47,249 [myid:] - INFO  [main:ZooKeeper@438] - Initiating client connection, connectString=localhost:2181 sessionTimeout=30000 watcher=org.apache.zookeeper.ZooKeeperMain$MyWatcher@277050dc
Welcome to ZooKeeper!
2017-03-22 07:06:47,277 [myid:] - INFO  [main-SendThread(localhost:2181):ClientCnxn$SendThread@1032] - Opening socket connection to server localhost/0:0:0:0:0:0:0:1:2181. Will not attempt to authenticate using SASL (unknown error)
JLine support is enabled
2017-03-22 07:06:47,382 [myid:] - INFO  [main-SendThread(localhost:2181):ClientCnxn$SendThread@876] - Socket connection established to localhost/0:0:0:0:0:0:0:1:2181, initiating session
2017-03-22 07:06:47,395 [myid:] - INFO  [main-SendThread(localhost:2181):ClientCnxn$SendThread@1299] - Session establishment complete on server localhost/0:0:0:0:0:0:0:1:2181, sessionid = 0x15af60b9055000a, negotiated timeout = 30000

WATCHER::

WatchedEvent state:SyncConnected type:None path:null
[zk: localhost:2181(CONNECTED) 0] ls /
[cluster, controller_epoch, brokers, zookeeper, admin, isr_change_notification, consumers, config]
[zk: localhost:2181(CONNECTED) 1] rmr /brokers
[zk: localhost:2181(CONNECTED) 2] rmr /isr_change_notification
[zk: localhost:2181(CONNECTED) 3] rmr /consumers              
[zk: localhost:2181(CONNECTED) 4] ls /cluster
[id]
[zk: localhost:2181(CONNECTED) 5] ls /
[cluster, controller_epoch, zookeeper, admin, config]
[zk: localhost:2181(CONNECTED) 6] ls /con

controller_epoch   config
[zk: localhost:2181(CONNECTED) 6] ls /controller_epoch
[]
[zk: localhost:2181(CONNECTED) 7] ls /config          
[changes, clients, topics]
[zk: localhost:2181(CONNECTED) 8] rmr /config
[zk: localhost:2181(CONNECTED) 9]