ethtool: add examples (#5307)

pages/linux/ethtool.md

@@ -3,6 +3,22 @@
 > Display and modify Network Interface Controller (NIC) parameters.
 > More information: <http://man7.org/linux/man-pages/man8/ethtool.8.html>.
 
+- Display the current settings for an interface:
+
+`ethtool {{eth0}}`
+
+- Display the driver information for an interface:
+
+`ethtool --driver {{eth0}}`
+
+- Display the network usage statistics for an interface:
+
+`ethtool --statistics {{eth0}}`
+
+- Blink one or more LEDs on an interface for 10 seconds:
+
+`ethtool --identify {{eth0}} {{10}}`
+
 - Set the link speed, duplex mode, and parameter autonegotiation for a given interface:
 
 `ethtool -s {{eth0}} speed {{10|100|1000}} duplex {{half|full}} autoneg {{on|off}}`