Different methods to list network interfaces in Linux.
Naming#
| Name Pattern | Meaning |
|---|---|
| lo | Loopback - virtual interface 127.0.0.1/8 |
| eth0,eth1 | Classic wired Ethernet naming |
| wlan0,wlan1 | Classic WiFi naming |
| enp3s0,wlp2s0 | “Preditable Network Interface Names” - stable names that don’t change when hardware is added/removed |
Cmdline#
Below we’ve listed 10 methods to list network interfaces on Linux OS. This is helpful for troubleshooting, configuration, and hardware checking.
| # | Method | Command | Best For |
|---|---|---|---|
| 1 | ip command | ip addr | Modern all-purpose chaeck of IP state and names. |
| 2 | nmcli | nmcli device status | Clean and easy-to-read summary. Requires NetworkManager running. |
| 3 | netstat | netstat -i | Viewing transmission/reception stats (packets, bytes); older net-tools package |
| 4 | ifconfig | ifconfig -a | Legacy method for IPs and state; deprecated, often not installed by default |
| 5 | /proc/net/dev (file) | cat /proc/net/dev | Low-level kernel stats (packets, errors); good for scripting/monitoring |
| 6 | /sys/class/net (directory) | cat /proc/net/dev | Quick, simple list of interface names only |
| 7 | hwinfo | sudo hwinfo --short --network | Hardware summary — driver details and configuration |
| 8 | lshw | sudo lshw -class network -short | Checking physical hardware (e.g., confirming a new network card is recognized) |
| 9 | iwconfig | iwconfig | Wireless-specific info (signal strength, ESSID, access point MAC) — Wi-Fi only |
| 10 | lspci | lspci | egrep -i 'network|ethernet|wireless|wi-fi' | Filtering PCI devices to find network-related hardware |
