title: Why is Wi-Fi called en0, like ethernet, on a Mac OS X?
body: <p>Linux has been my main system for years now. In Linux, ethernet hardware devices have names like <code>eth0</code> or <code>enp1s0</code> (the latter I've only seen on Arch Linux). The wireless card has always had names like <code>wlan0</code> or <code>wlp2s0</code> (again the latter on Arch). On my new MacBook Air, the wireless network is assigned <code>en0</code>, which I've read stands for ethernet. Also, there's an en1 even though I don't have an ethernet port. What does this naming convention mean?</p>