systool man page

systool ā€” view system device information by bus, class, and topology


systool [options [device]]


Calling systool without parameters will present all available bus types, device classes, and root devices.

When device is supplied, the information requested by options is shown only for the specified device, otherwise all present devices are displayed.

systool uses APIs provided by libsysfs to gather information. systool runs only on Linux systems running kernels 2.5 or later, with the sysfs filesystem mounted.



Show attributes of the requested resource

-b bus

Show information for a specific bus

-c class

Show information for a specific class


Show only devices


Show usage

-m module_name

Show information for a specific module


Show absolute sysfs path to the resource


Show all attributes with values

-A attribute

Show attribute value for the requested resource


Show only drivers


Show device's parent

See Also

The web page of libsysfs at


systool was written by Ananth Mavinakayanahalli <> and Daniel Stekloff <>.

This man page was contributed by Martin Pitt <> for the Debian GNU/Linux system (but may be used by others).


October 12, 2003 Martin Pitt