Getting Our Connection Information

Every computer connected to the internet or a TCP/IP network has an IP address. There are several methods we can use to determine ours from the command line.

The ifconfig command

The ifconfig command is a legacy command that displays information about our network devices. While newer tools are available, we’re going to start by exploring this tool because it’s universally available on Mac and Linux. On Ubuntu 18.04, we need to install the net-tools package to use it:

sudo apt install net-tools

Once it’s installed, we run ifconfig:

ifconfig