Writing udev rules

Writing udev rules

by Daniel Drake (dsd)
Version 0.74

The most recent version of this document can always be found at:
http://www.reactivated.net/writing_udev_rules.html

Contents

• Introduction

• About this document

• History

• The concepts

• Terminology: devfs, sysfs, nodes, etc.

• Why?

• Built-in persistent naming schemes

• Rule writing

• Rule files and semantics

• Rule syntax

• Basic rules

• Matching sysfs attributes

• Device hierarchy

• String substitutions

• String matching

• Finding suitable information from sysfs

• The sysfs tree

• udevinfo

• Alternative methods

• Advanced topics

• Controlling permissions and ownership

• Using external programs to name devices

• Running external programs on certain events

• Environment interaction

• Additional options

• Examples

• USB Printer

• USB Camera

• USB Hard Disk

• USB Card Reader

• USB Palm Pilot

• CD/DVD drives

• Network interfaces

• Testing and debugging

• Putting your rules into action

• udevtest

• Author and contact