zookeeper没有ls2命令问题

在老版本的zookeeper中可以在客户端输入 ls2 命令查看某个路径下目录列表并输出路径的节点状态属性，比如在网上找的一个例子：

[zk: localhost:2181(CONNECTED) 7] ls2 /
[zookeeper]
cZxid = 0x0
ctime = Thu Jan 01 08:00:00 CST 1970
mZxid = 0x0
mtime = Thu Jan 01 08:00:00 CST 1970
pZxid = 0x0
cversion = -1
dataVersion = 0
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 0
numChildren = 1

在新版本的zookeeper的客户端中输入 ls2 出现找不到该命令：

ZooKeeper -server host:port -client-configuration properties-file cmd args
        addWatch [-m mode] path # optional mode is one of [PERSISTENT, PERSISTENT_RECURSIVE] - default is PERSISTENT_RECURSIVE
        addauth scheme auth
        close 
        config [-c] [-w] [-s]
        connect host:port
        create [-s] [-e] [-c] [-t ttl] path [data] [acl]
        delete [-v version] path
        deleteall path [-b batch size]
        delquota [-n|-b] path
        get [-s] [-w] path
        getAcl [-s] path
        getAllChildrenNumber path
        getEphemerals path
        history 
        listquota path
        ls [-s] [-w] [-R] path
        printwatches on|off
        quit 
        reconfig [-s] [-v version] [[-file path] | [-members serverID=host:port1:port2;port3[,...]*]] | [-add serverId=host:port1:port2;port3[,...]]* [-remove serverId[,...]*]
        redo cmdno
        removewatches path [-c|-d|-a] [-l]
        set [-s] [-v version] path data
        setAcl [-s] [-v version] [-R] path acl
        setquota -n|-b val path
        stat [-w] path
        sync path
        version 
Command not found: Command not found ls2

从客户端输出信息可以看到，命令ls2找不到，但是从它其他信息可以看到这么一条：

ls [-s] [-w] [-R] path

在新版本zookeeper中，使用

ls -s path

取代 ls2

[zk: localhost:2181(CONNECTED) 27] ls -s /
[aa, aa0000000001, aa0000000002, jsy, zookeeper]
cZxid = 0x0
ctime = Wed Dec 31 16:00:00 PST 1969
mZxid = 0x0
mtime = Wed Dec 31 16:00:00 PST 1969
pZxid = 0x19
cversion = 7
dataVersion = 0
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 0
numChildren = 5

总结：
新版本zookeeper使用命令：ls -s path
取代ls2命令。