ethtool

Query and control of Ethernet device settings.

Last updated: 2026-07-05 Report error

Syntax

$ethtool [OPTIONS] INTERFACE

Examples

$ethtool eth0

Examples

$ethtool -s eth0 speed 1000 duplex full

Examples

$ethtool -p eth0

Warnings

Requires root privileges

Typical use cases

Interface Info

ethtool INTERFACE

Set speed

ethtool -s INTERFACE speed SPEED

LED blinking

ethtool -p INTERFACE

Note For Ethernet interface configuration.

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