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*powerman* is free UNIX/Linux software that controls (remotely and in
parallel) switched power distribution units. It was designed for remote
power control of Linux systems in a data center or cluster environment,
but has been used in other environments such as embedded management
appliances, home automation, and high availability service management.
*powerman* can be extended to support new devices using an expect-like
scripting language. It communicates with devices natively using telnet,
raw socket, and serial protocols. It also can drive virtual power control
devices via a coprocess interface. The coprocess mechanism has been used
to extend *powerman* to communicate with devices using other protocols
such as SNMP, IPMI, Insteon, and Redfish.
*powerman* can control equipment connected using any combination of the
above methods and provide unified naming for the equipment and parallel
execution of control actions.
#### Origin and license
Originally written by Andrew Uselton in 2002 for early Linux clusters at LLNL.
SPDX-License-Identifier: GPL-2.0-or-later
UCRL-CODE-2002-008
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