Answer Description

ifconfig (Interface Configuration) is a command line tool on Unix-like systems to display network configuration details. The Windows equivalent is IPCONFIG. Unix-like systems typically refers to Unix, Linux, BSD and OSX operating systems.

Wikipedia

ifconfig (short for interface config) is a system administration utility in Unix-like operating systems for network interface configuration. The utility is a command-line interface tool and is also used in the system startup scripts of many operating systems. It has features for configuring, controlling, and querying TCP/IP network interface parameters. Ifconfig originally appeared in 4.2BSD as part of the BSD TCP/IP suite.