Table of Contents Table of Contents Title and Copyright Information Preface Documentation License Conventions Documentation Accessibility Access to Oracle Support for Accessibility Diversity and Inclusion 1 About the udev Device Manager About Device Files 2 Querying udev Prefixes for udevadm Information View All Information for a Device Limiting Device Information by Query Type View Attributes for a Device and Its Parent Devices 3 Working With udev Rules Assignment and Comparison Operators Pattern-Matching Characters Common Match Keys Common Assignment Keys String Substitutions 4 Customizing udev Rules