Welcome to ifconfig vs ip usage guide on Linux. ifconfig and ip commands are mostly useful when managing networking on Linux/Unix systems. The ip command has been there for a while now but most people still stick to ifconfig for daily network configurations and troubleshooting on Linux.
Change IP Address using ifconfig. On modern distributions, the “ifconfig” command has been completely deprecated and it is now advised to use the “ip” command. However, you should still be able to use the “ifconfig” to change your IP address. $ which ifconfig /usr/sbin/ifconfig Is there a way in Linux, using C code, to get the same information that "ifconfig eth0" would return? I'm interested in things like IP address, link status, and MAC address. Here's sample output
Using a DHCP to assign a unique address each time is usually the better option. If you’d like to understand TCP/IP better, this course can help you. Ifconfig Commands to Configure DHCP. The most common use of the ifconfig command is to disable or enable an interface and to set up an interface IP address and netmask.
ifconfig eth0 192.168.1.10 netmask 255.255.255.0 up. You can also bring a specific network up(on) or down(off) eg: ifconfig eth0 up. ifconfig eth0 down. Using Virtual IP Addresses with ifconfig. Another rather useful way of using ifconfig is to add virtual IP addresses, which are just secondary IP addresses that are added to a network card. sudo ifconfig eth1 up. Similarly, you can disable an active network interface using the down keyword. For instance, to disable the wireless network interface wlan0, use the command: sudo ifconfig wlan0 down Configuring an interface. ifconfig can be used at the command line to configure (or re-configure) a network interface. This is often ifconfig [interface-name] For example: Q4. How to disable or enable a network interface using ifconfig? To do this, just specify the 'down' or 'up' flags. For example, to disable an interface dubbed eth0, use the ifconfig command in the following way: ifconfig eth0 down. Similarly, to enable, use the following command: ifconfig eth0 up Q5.
May 17, 2011 · Just a note about the Mac ifconfig command. We are using it to view network settings, which is fine. In doing research for this article, I read that it is not advised to use this to change settings. From what I read, it works, but with possible complications. Closing. We use ipconfig to find the router's IP number.
Using ifconfig. If you want to add a secondary IP address to a NIC already in use in Linux, and have that change only temporary. Enter this command: ifconfig [nic]:0 [IP-Address] netmask [mask] up An example is shown below. ifconfig eth0:0 192.168.1.2 netmask 255.255.255.0 up You need to be root in order to execute that command. Using ip command Additional parameters with ifconfig Let’s write a command using ifconfig which will change the IP address of the network ‘enp0s3’ to 192.168.0.1 and also changes the subnet mask 255.255.255.0: sudo ifconfig enp0s3 192.168.0.1 netmask 255.255.255.0 Change IP Address using ifconfig. On modern distributions, the “ifconfig” command has been completely deprecated and it is now advised to use the “ip” command. However, you should still be able to use the “ifconfig” to change your IP address. $ which ifconfig /usr/sbin/ifconfig Is there a way in Linux, using C code, to get the same information that "ifconfig eth0" would return? I'm interested in things like IP address, link status, and MAC address. Here's sample output In fact, no work has been done on ifconfig for some time now. In its place is the ip command. Although some aren't exactly happy about this choice, the die was cast and we must move on (sort of).