Show all network interfaces in Linux

• lspci | egrep -i --color 'network|ethernet'
• lshw -class network
• ifconfig -a
• ip link show
• ip a
• cat /proc/net/dev
• cat /proc/net//proc/net/fib_trie (ips)
• systemd/networkctl|networkctl list
• nmcli device show

See also

• ip [link, route], ifconfig netstat ss lsof ping ethtool mii-tool arping nmcli(RHEL) route networkctl, netplan, tc