The ifconfig command is a tool for configuring network interfaces that any Linux system administrator should know. It is used to bring interfaces up or down, assign and remove addresses and routes, manage ARP cache, and much more1. One of the information that ifconfig can display is the MAC address of each network interface, which is a unique identifier of the physical layer of the network device. The MAC address is usually shown as a hexadecimal string separated by colons, such as 00:0c:29:3f:5c:1f. To get the MAC address of a Linux distribution, a technician can use the ifconfig command without any arguments, which will show the details of all the active network interfaces, or specify the name of a particular interface, such as eth0 or wlan0, to show only the details of that interface.
References1: Linux Commands - CompTIA A+ 220-1102 - 1.11 - Professor Messer IT Certification Training Courses1
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