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acpitool(1) on Linux

The text 66f6f668988d, as Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 5.0 (Lenny) shipped it.

a Linux ACPI client, allowing you to query or set ACPI values

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acpitool(1) on Linux now