acpi_available (1) - Linux Man Pages
acpi_available: test whether ACPI subsystem is available
DESCRIPTIONacpi_available checks whether the ACPI ("Advanced Configuration and Power Interface") subsystem is available, as evidenced by the presence of the /proc/acpi directory.
0 (true) ACPI subsystem is available 1 (false) ACPI subsystem is not available 2 usage error (arguments supplied)
/proc/acpi ACPI status information file
AUTHORThis manual page was written by Thomas Hood <jdthood [at] yahoo.co.uk>.