How to list all physically installed Network Cards (Debian)?

My "Dedicated Server" should have two NICs installed but I can only find one.

My Question: What other commands and methods are available to test how many network cards are installed on my server

lspci | grep Ethernet

Are there any other commands / methods available?

Solution 1:

You can use lshw to see all devices on a machine. To view just the network devices enter:

lshw -class network

Solution 2:

ip link show will list everything that looks like a network interface.

Solution 3:

find /sys/class/net -type l -not -lname '*virtual*' -printf '%f\n'

Shows just interfaces that relate to a physical NIC.

Tried to find a type option to ip link show that would display non-logical, but alas:

ip link help 2>&1 | grep -A10 'TYPE :='
TYPE := { vlan | veth | vcan | dummy | ifb | macvlan | macvtap |
          bridge | bond | ipoib | ip6tnl | ipip | sit | vxlan |
          gre | gretap | ip6gre | ip6gretap | vti | nlmon |
          bond_slave | ipvlan | geneve | bridge_slave | vrf }

It seems to be the one thing that ip link show cannot do. At least not without resorting to a script that first lists each of the above and then does grep -v against a final run without type specified.