IPMITool is a tool to communicate with BMCs (such as HP and Sun iLOM's and Dell iDracs) via the Intelligent Platform Management Interface (IPMI)
This page contains a list of commonly used commands, although where a dedicated tool is available (such as HP's hpacucli that should probably be preferred
Retrieving ILOM IP address with ipmitool:
ipmitool lan print
Retrieving Sensor Data:
ipmitool sdr
Or to include alarm thresholds:
ipmitool sensor
Get Hardware Information:
ipmitool fru print
Retrieve the System Event Log (SEL):
ipmitool sel
List Authorised Users:
ipmitool user
List active ILOM Sessions:
ipmitool session info all
Reset the ILOM:
ipmitool mc reset warm
or
ipmitool mc reset cold