Package acpi

Command-line ACPI client

http://sourceforge.net/projects/acpiclient/

Linux ACPI client is a small command-line program that attempts to
replicate the functionality of the 'old' apm command on ACPI systems.
It includes battery and thermal information.

General Commands (Section 1)
acpi
acpi Shows information from the /proc or the /sys filesystem, such as battery status or thermal information.