ls=org.apache.dubbo.qos.legacy.ListTelnetHandler
ps=org.apache.dubbo.qos.legacy.PortTelnetHandler
cd=org.apache.dubbo.qos.legacy.ChangeTelnetHandler
pwd=org.apache.dubbo.qos.legacy.CurrentTelnetHandler
invoke=org.apache.dubbo.qos.legacy.InvokeTelnetHandler
trace=org.apache.dubbo.qos.legacy.TraceTelnetHandler
count=org.apache.dubbo.qos.legacy.CountTelnetHandler
select=org.apache.dubbo.qos.legacy.SelectTelnetHandler
shutdown=org.apache.dubbo.qos.legacy.ShutdownTelnetHandler