Get Ethernet Network Adapter Speed on Linux

Knowing the speed of the Ethernet network adapter can be useful in many situations. For example, It lets you see if you're using all the available bandwidth. Additionally, if you're considering upgrading your network, you can check if your current Ethernet adapter is sufficient or if you need to replace it. This tutorial shows how to get Ethernet network adapter speed on Linux.

The /sys/class/net directory holds details about the network interfaces on the system. The speed of the Ethernet network adapter can be found in the /sys/class/net/<interface>/speed file.

For example, to check the speed of the ens33 network interface, use the following command:

cat /sys/class/net/ens33/speed

Output example:

1000