If the ifconfig command does not show the IPv4 address on your Linux system, there are several potential reasons for this:
- The network interface is down: Try running the following command to bring up the network interface:
sudo ifconfig <interface> up
Replace <interface> with the name of the network interface, for example eth0.
- The network interface is not configured with an IP address: Try running the following command to assign an IP address to the network interface:
sudo ifconfig <interface> <IP address> netmask <netmask>
Replace <interface>, <IP address>, and <netmask> with the appropriate values for your network.
- The network configuration is managed by NetworkManager: If NetworkManager is managing your network configuration, the IP address information may not be displayed with
ifconfig. To view the IP address assigned to a network interface managed by NetworkManager, run the following command:
ip addr show <interface>
Replace <interface> with the name of the network interface.
- The IP address information is not available: If the IP address information is not available, it may be due to a problem with the network driver or hardware. Try restarting the network service, the computer, or checking the network hardware and drivers to see if they are functioning correctly.
If you still can’t see the IP address information, it may be helpful to consult the log files or get more detailed information about the network status by using other commands such as ip or dmesg.