Blink one or more LEDs on an interface for 10 seconds

Display and modify Network Interface Controller (NIC) parameters.
More information: <http://man7.org/linux/man-pages/man8/ethtool.8.html>.
Trick copyright: tl;dr; <https://github.com/tldr-pages/tldr>

ethtool --identify {{eth0}} {{10}}

click the source code to copy install ethtool on any operating system with command-not-found.com