systool

Sysfs device information viewer

TLDR

List all buses, classes, and root devices

$ systool

List bus devices with all attribute values

$ systool -b [pci] -v

List class devices with all attribute values

$ systool -c [net] -v

Show only the drivers on a bus

$ systool -b [bus] -D

Show attributes of a specific module

$ systool -m [module_name] -v

Show a single named attribute for a device

$ systool -A [attribute] -b [bus] [device]

systool displays system device information from sysfs by bus, class, and topology. It provides a convenient interface to browse the `/sys/bus/`, `/sys/class/`, and `/sys/module/` hierarchies.Run without parameters, systool lists all available bus types, device classes, and root devices. Passing a device name after the options limits output to that single device. Available buses can be found in `/sys/bus/` and classes in `/sys/class/`; common buses include pci, usb, and scsi, and common classes include block, net, and drm.

PARAMETERS

-b bus

Show information for a specific bus (pci, usb, etc.).

-c class

Show information for a specific class (block, net, drm, etc.).

-m module

Show information for a specific module.

-a

Show attributes of the requested resource.

-v

Show all attributes with values.

-A attribute

Show the value of a single named attribute for the requested resource.

-d

Show only devices.

-D

Show only drivers.

-P

Show the device's parent.

-p

Show the absolute sysfs path to the resource.

-h

Show usage.

INSTALL

sudo apt install sysfsutils

sudo dnf install sysfsutils

sudo pacman -S sysfsutils

sudo apk add sysfsutils

sudo zypper install sysfsutils

nix profile install nixpkgs#sysfsutils

CAVEATS

Requires the sysfsutils package. Information comes from the kernel's sysfs interface. Some attributes may require root to read.

HISTORY

systool is part of the sysfsutils package, providing user-friendly access to the Linux sysfs virtual filesystem that exports kernel device information.