---
name: "sys_bus"
section: "5"
platform: "linux"
package: "man-pages"
version: "6.20-1"
release: "Arch Linux 2026-11-07"
platforms: ["linux"]
url: "https://carta.tech/man/sys_bus"
---

# sys\_bus(5)

system buses

## NAME

/sys/bus/ - system buses

## SYNOPSIS

*/sys/bus/*

## DESCRIPTION

This directory contains one subdirectory for each of the bus types in the kernel. Inside each of these directories are two subdirectories:

- *devices*

  This subdirectory contains symbolic links to entries in */sys/devices* that correspond to the devices discovered on this bus.

- *drivers*

  This subdirectory contains one subdirectory for each device driver that is loaded on this bus.

## STANDARDS

Linux.

## HISTORY

Linux 2.6.0.

## SEE ALSO

[**sysfs**(5)](/man/sysfs/5.md)