&ipconfig So far, I have the following functionality built out:

• Interface name: This is included in the ifaddrs struct
• Whether the network is wired or wireless: Believe it or not, the easiest way to do this is checking for the existence of a directory (/sys/class/net/interface_name/wireless). Figuring out how that works is definitely on the to do list.
• The IPv4 address: There are functions available to extract this from the ifa_addr member of the ifaddrs struct (specifically, inet_ntoa()). I think rolling my own version if this function would be a good exercise.
• The DNS suffixes: This was a little less obvious, because unlike in Windows, there are many different things that could be managing DNS in Linux. I decided the best way to do this in a universal fashion was to manually enumerate /etc/resolv.conf. This isn't the cleanest approach, but it does work on my test systems.