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ipmitool is a bit of a pain to use (lots of arguments, can't specify everything in environment variables or ~/.ipmitool config files, etc, only operates on one machine at a time). That's why I threw together ipmitw (ipmi tool wrap) to simplify things. You can download it here.
All it does is run ipmitool, providing the annoying user/password/protocol args automatically, and executing it once for each host listed. Hosts can be listed in ranges, or comma separated (one contiguous string – no spaces). For example:
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