$ ip addrġ: lo: mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 My arch system is configured to give older interface names, but the newer names (automatically configured by ubuntu) give newer (more complicated, harder to remember, and type) information. TLPD has a quick synopsis on some of the most common commands in linux for networking. You might want to do some googling on some basic networking commands and how they work. ip address # will also display similar information.
also, ifconfig is considered to be a deprecated tool (i still use it however, it's handy because it's familiar and easy to use). Then, afterwards, you'll understand what ifconfig does.
