List of Available Commands
vCLI and ESXCLI Commands lists all ESX/ESXi 4.1 vCLI commands in alphabetical order and the corresponding ESXCLI command if available. No new vicfg- commands were added in vSphere 5.0. Many new namespaces were added to ESXCLI in vSphere 5.0. An additional set of new commands and namespaces was added in vSphere 5.1.
vCLI and ESXCLI Commands 
esxcli (new syntax)
resxtop (No ESXCLI equivalent)
See Using resxtop for Performance Monitoring. See the vSphere Resource Management documentation for a detailed reference.
svmotion (No ESXCLI
vicfg-authconfig (No ESXCLI equivalent).
vicfg-cfgbackup (No ESXCLI equivalent), Cannot run against a vCenter Server system.
Sets both the partition (esxcli system coredump partition) and the network (esxcli system coredump network) to use for core dumps. Use this command to set up ESXi Dump Collector.
vicfg-ntp (No ESXCLI equivalent)
Manages the SNMP agent. Managing ESXi SNMP Agents. Using SNMP in a vSphere environment is discussed in detail in the vSphere Monitoring and Performance documentation.
The vCenter Server and Host Management documentation explains how to set up system logs using the vSphere Web Client.
vicfg-user (No ESXCLI equivalent)
The vSphere Security documentation discusses security implications of user management and custom roles.
vifs (No ESXCLI equivalent)
Run esxcli software vib against ESXi 5.0 and later.
Run vihostupdate against ESX/ESXi 4.x.
Run vihostupdate35 against ESX/ESXi 3.5.
You cannot run vihostupdate against ESXi 5.0 and later hosts.
vmkfstools (No ESXCLI equivalent)
vmware-cmd (No ESXCLI equivalent)