ACPI tools on Linux

http://ftp.kernel.org/pub/linux/kernel/people/lenb/acpi/utils/
http://www.columbia.edu/~ariel/acpi/acpi_howto.txt
http://pank.org/blog/archives/000320.html
http://www.wangchao.net.cn/bbsdetail_1415962.html

pmtest does not work on CentOS 5.3