Linux Command Directory
This directory of Linux commands is from Linux in a Nutshell, 5th Edition.
Click on any of the 687 commands below to get a description and list of available options. All links in the command summaries point to the online version of the book on Safari Bookshelf.
Buy it now, or read it online on Safari Bookshelf.
acpi
acpi [options]
Displays information about the ACPI (Advanced Configuration and Power Interface) system, based on the /proc/acpi file. Most kernels after 2.4 support ACPI hardware, and in both hardware and software, ACPI is gradually replacing the older APM (Advanced Power Management)
Note that some ACPI systems have special events that are not available on others. For example, IBM laptops have events related to their docking stations and keyboard lights that are not used on nondocking or unlighted laptops. On all systems, the /proc/acpi directory must be present for acpi commands to work.
Options
Display battery information.
Do not display battery information.
Display temperature information.
Do not display temperature information.
Show whether the AC adapter is connected.
Do not show information about the AC adapter.
Show all information on every device.
Display information even on devices that are not available or not installed, such as empty slots for extra batteries.
Do not display information on devices that are not operational or not installed.
Use degrees Celsius as the temperature unit. This is the default unit.
Use the specified path to ACPI information. The default path is /proc/acpi.
Use degrees Fahrenheit as the temperature unit.
Display help information.
Use degrees Kelvin as the temperature unit.
Display version information.
